CN113398394B - A portable universal life support system for field emergency treatment - Google Patents

Abstract

The invention discloses a portable general life support system for field emergency treatment, which comprises a life support system host quickly positioned on a stretcher through a stretcher fixing device, wherein the life support system host comprises a host shell and a transfusion device; the fixed host computer main support that is provided with in inside of host computer shell, the inside location of host computer main support is provided with and is used for providing mixed oxygen and can avoid taking place the mechanical ventilation module of the unable exhaust condition of patient's expired gas and link to each other with mechanical ventilation module and be used for breathing the treatment and can guarantee the breathing module of patient's autonomic breathing to the patient, the inside of host computer main support still is provided with and is used for the whole power module that supplies power of carrying out for the device, the top of host computer main support is provided with system control module. The invention can realize the transfusion treatment and the respiratory treatment of the patient, can ensure that the patient continuously and normally carries out the respiratory treatment, and can not influence the normal respiration of the patient even if the device fails.

Description

A portable universal life support system for field emergency treatment

technical field

The invention relates to the technical field of medical equipment, and more particularly to a portable universal life support system for field emergency treatment.

Background technique

In modern clinical medicine, ventilator, as an effective means to artificially replace the function of spontaneous ventilation, has been widely used in respiratory failure caused by various reasons, anesthesia and respiratory management during major surgery, respiratory support treatment and emergency resuscitation. It occupies a very important position in the field of modern medicine. A ventilator is a vital medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives.

A ventilator is a breathing apparatus designed for artificial mechanical ventilation for patients who need to provide respiratory support, respiratory therapy and emergency resuscitation. Usually, a high-pressure air source is used to provide artificial mechanical ventilation for patients who need to provide respiratory support, respiratory therapy and emergency resuscitation.

The wounded on the battlefield can be first aided, transported, and evacuated to the hospital within the "golden time", which can effectively reduce the death rate of the wounded. At present, various medical equipment occupies a lot of space in the process of large-scale casualty treatment and transportation, and it is impossible to treat more patients. In addition, the first aid equipment is large in size, and the oxygen supply time of the compressed oxygen cylinder is short, which is also dangerous. In the process of on-site first aid on the battlefield, the installation of first aid equipment is complicated and takes a long time. Therefore, the portable universal life support system integrates the transportation and rescue of the wounded, and has advanced life support functions.

Current life support systems on the market have the following deficiencies:

1) Double-tube, electromechanical ventilation modules that support invasive ventilation usually include modules such as large-diameter inhalation valves and safety valves, which are complex and increase weight, volume and cost. A small and lightweight portable universal life support system is disadvantageous. Moreover, if the valve on the mechanical ventilation module is blocked, due to the single exhalation channel, the gas exhaled by the patient cannot be discharged, which will affect the personal safety of the patient.

2) The traditional breathing module only delivers the oxygen stored in the box to the patient through the oxygen delivery tube and the breathing mask; however, when the power supply of the breathing module is interrupted or the breathing module fails, the patient cannot obtain oxygen through the portable life support system, and During this process, because the breathing mask is tightly fastened to the patient's face, the patient cannot inhale spontaneously in the case of a shortage of oxygen delivery, which poses a greater safety hazard.

3) The current life support system usually does not have the infusion function and has a single function. The life support system will be used in harsh outdoor environments. The current infusion rod components on the market do not have waterproof sealing functions. If the current infusion rod components on the market are set on the life support system, there will be bumps during the transportation process. A condition in which fluid from an infusion rod assembly can enter the life support system, resulting in a loss of life support system function.

In addition, the infusion rod assembly may move due to bumps during the delivery process, which causes the infusion rod assembly to fall off from the life support system, which is very unstable and affects the normal use of the life support system.

4) As part of the ventilator, the air mixer is used to mix air with oxygen. The air mixer in the prior art usually does not have the function of heating the mixed gas, and the ventilator in the alpine environment supplies the patient with cold and wet air for breathing, causing discomfort to the patient. In addition, the mixing method of air and oxygen in the current air mixer is that the gas in the oxygen mixing chamber is drawn out by the turbine, and the gas flows in the chamber for mixing. The mixing time is short, the mixing degree is not sufficient, and the mixing efficiency is not high. .

5) At present, there is no fixing device on the market that can quickly disassemble and assemble the main unit and the stretcher. The fixing device is also relatively heavy and prone to falling off, which delays the time for first aid of the patient, and cannot be applied to the rapid first aid situation in the field.

6) During the field transportation, the vibration of the breathing module may cause the unstable control of the turbine speed, which will further lead to the instability of the flow rate or pressure of the mechanical ventilation, which may reduce the comfort of the patient using mechanical ventilation, and may even reduce the mechanical ventilation. patient outcomes.

7) The current life support system has a complex structure, occupies a lot of space, and the weight of the product is heavy, which is not conducive to handling.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a portable universal life support system for field emergency treatment, so as to solve the problems in the background technology, to simplify the mechanical ventilation module, to meet the requirements of the portable universal support system for weight and volume, and Prevents the failure of exhaust when the valve on the mechanical ventilation module is blocked, enables the patient to breathe spontaneously when the breathing module fails, and avoids suffocation. Enter the life support system to ensure the normal and continuous operation of the life support system.

In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

A portable universal life support system for field emergency treatment, comprising a life support system host that is quickly positioned on a stretcher through a stretcher fixing device, the life support system host comprising a host shell and an infusion device arranged above the host shell and having a waterproof sealing function; The main frame of the main frame is fixed inside the main frame, and the main frame of the main frame is provided with a mechanical ventilation module for providing mixed oxygen for the patient and avoiding the situation that the patient's exhaled gas cannot be discharged, and is connected with the mechanical ventilation module. A breathing module that performs breathing therapy on patients and can ensure that patients inhale spontaneously. The main frame of the main unit is also provided with a power supply module for supplying power to the device as a whole. A system control module is arranged above the main frame of the main unit. The mechanical ventilation module receives power. The control terminal is connected to the output terminal of the system control module.

To further optimize the technical solution, the mechanical ventilation module includes an air intake system for providing an air source for the patient, an exhaust system for discharging the patient's exhaled air into the atmosphere, and a communication system disposed between the air intake system and the exhaust system and communicating with the exhaust system. Air manifold with breathing module.

The technical solution is further optimized, and the air intake system includes an air delivery system for inputting air in the environment, a low-pressure oxygen delivery system for inputting low-pressure oxygen, and a high-pressure oxygen delivery system for inputting high-pressure oxygen, an air delivery system, and a low-pressure oxygen delivery system. The delivery system and the high-pressure oxygen delivery system are intersected and connected with an oxygen mixing device. The air outlet of the oxygen mixing device is connected with an inspiratory main pipe that provides an air source for the patient. The inspiratory main pipe is provided with a turbine for pumping the mixed gas in the oxygen mixing device. , the suction main pipe is also provided with a first one-way valve to prevent the exhaled gas from the exhaust system from entering the oxygen mixing device. The gas main pipe is connected with an air resistance passage which is arranged in parallel with the first one-way valve;

The exhaust system includes an exhalation main pipe that is communicated with the main air delivery pipe, and the exhalation main pipe is sequentially provided with an exhalation valve for controlling the pressure and flow rate of the patient's exhaled gas and a third valve for preventing outside air from entering the exhalation main pipe. to the valve.

To further optimize the technical scheme, the inhalation main pipe and the exhalation main pipe are respectively provided with a gas detection module for detecting gas conditions, the output end of the gas detection module is connected to the input end of the system control module, and the gas detection module is arranged in the breathing module. on the main frame of the main unit below.

To further optimize the technical solution, the turbine is a variable speed turbine that adjusts the output gas flow and pressure parameters by means of variable speed.

The technical solution is further optimized, the turbine is arranged inside the main frame of the main engine through the turbine fixing device;

The turbine fixing device includes a turbine bracket arranged on the outside of the turbine, the bottom end of the turbine bracket is provided with a first through hole for allowing the motor, wire and terminal of the turbine to pass through, and the top end of the turbine bracket is provided with an air inlet for the turbine. The second through hole that communicates with each other, the side of the turbine bracket is provided with a gap that communicates with the outlet of the turbine; the bottom end of the inner wall of the turbine bracket and the bottom end of the turbine shell are provided with a buffer for buffering. For the first buffer assembly, a second buffer assembly for buffering is provided between the top end of the inner wall of the turbine bracket and the top end of the casing of the turbine.

To further optimize the technical scheme, the oxygen mixing device includes an oxygen mixing module main frame, an oxygen inlet, an air inlet and a mixed gas outlet are arranged on the oxygen mixing module main frame, and the oxygen inlet and the air inlet are respectively provided with valves; the oxygen mixing module The inside of the main frame is provided with an oxygen mixing cavity which is communicated with the mixed gas outlet, and the interior of the oxygen mixing cavity is connected with the oxygen inlet and the air inlet respectively, and is used for mixing the oxygen and air introduced in a spiral type. The spiral oxygen mixing heating module is used for mixing and heating in the form of gas. The controlled end of the spiral oxygen mixing heating module is connected to the output end of the system control module.

Further optimizing the technical scheme, the breathing module is communicated with the main gas delivery pipe through the breathing gas interface module; the breathing module includes a breathing suction port module and a breathing exhaust port module that are respectively communicated with the gas delivery main pipe;

The breathing and air inlet module includes an air inlet installed on the main frame of the host through the left fixing bracket, and the air inlet includes the air inlet body; the right end of the air inlet body is the air inlet, and the right end of the air inlet body passes through the right end. The fixing bracket is installed on the main bracket of the main engine and communicated with the air intake system of the mechanical ventilation module; the left end of the suction port body is an air outlet for supplying air to the patient, and the left end of the suction port body extends out of the left fixing bracket; The side wall of the suction port body is also provided with an autonomous suction hole, and the autonomous suction hole is equipped with an autonomous suction valve for connecting the air outlet at the left end of the suction port body with the outside when the breathing module fails.

The technical solution is further optimized, and the infusion device includes an infusion rod assembly for hooking up the infusion bag, a waterproof silicone assembly for preventing the liquid in the infusion rod assembly from flowing into the host shell, and a waterproof silicone assembly for connecting the infusion rod assembly and the waterproof silicone assembly. An infusion rod fixing assembly positioned on the host shell; the waterproof silicone assembly includes a waterproof sleeve that is sealed and embedded in the side of the infusion rod fixing assembly and wraps the bottom end of the infusion rod assembly.

The technical solution is further optimized. The stretcher fixing device includes a stretcher support frame that is in contact with the side of the stretcher and a stretcher rotation baffle that cooperates with the stretcher support frame to clamp the stretcher. The stretcher rotation baffle is used to drive the stretcher to rotate. A rotating assembly for the baffle plate to be rotated to realize the quick disassembly and assembly of the stretcher is arranged on the stretcher support frame; the upper part of the stretcher support frame is connected and provided with a stretcher adapter plate fixedly arranged on the main machine through a locking assembly.

Due to the adoption of the above technical solutions, the technical progress achieved by the present invention is as follows.

In the present invention, the infusion device with waterproof and sealing function is installed on the main support of the host, and the mechanical ventilation module that can provide mixed oxygen for the patient and can avoid the situation that the patient's exhaled gas cannot be discharged, and is used to perform respiratory therapy on the patient and can The breathing module that ensures the patient's self-inhalation is arranged inside the main frame of the host, so that the present invention can realize the infusion therapy and breathing therapy for the patient, and can ensure that the patient can continue to perform the breathing therapy normally, even if the device fails, it will not affect the patient. The device can breathe normally, and the overall weight of the device is light and easy to install and disassemble, which can be better suitable for rapid emergency situations in the field.

The invention can be used in but not limited to portable universal life support systems and battery management modules, and simplifies the electromechanical ventilation module to meet the weight and volume requirements of the portable universal support system, and is a double-tube design that can be used for invasive ventilation . The invention cancels the large-diameter suction valve, and the required gas flow and pressure changes are realized by the turbine speed change, thereby bringing the advantages of weight, volume and cost; the invention cancels the design of the safety valve, and also brings the weight and volume. and cost advantages. An air resistance passage arranged in parallel with the first one-way valve is connected to the suction main pipe between the air inlet end of the first one-way valve and the air outlet end of the first one-way valve of the present invention, so that when the exhalation valve is blocked , the gas exhaled by the patient can be discharged into the atmosphere through the air resistance passage, which effectively prevents the situation that the valve cannot be exhausted when the valve on the mechanical ventilation module is blocked.

The invention can realize the patient's spontaneous inhalation function when the breathing module fails by arranging an autonomous inhalation valve on the inhalation port body, ensure that the patient can breathe normally, prevent the occurrence of suffocation, and provide safe and reliable treatment conditions for the patient. Among them, the self-inhalation check valve in the self-inhalation valve adopts a diaphragm structure, which has the characteristics of lightness and high reliability, and is suitable for the use of portable universal life support systems.

The present invention can withstand heavier infusion bags, maintains good stability after hanging the infusion bags, has good stability and strength, can be well sealed with the life support system, and effectively allows external liquids to enter the life support system. In the invention, the waterproof sleeve is sealed and embedded in the side of the infusion rod fixing assembly, and the bottom end of the infusion rod assembly is wrapped, which can effectively prevent the liquid inside the infusion rod assembly from entering the host, so that the infusion device of the life support system has a waterproof seal Function, the effective external liquid enters the life support system to ensure the normal and continuous operation of the life support system.

The present invention can heat the mixed gas while mixing air and oxygen in the spiral-type oxygen-mixing heating module, so that the present invention can be applied to the mixing of air and oxygen in a high-cold environment, and the spiral-type oxygen-mixing heating The module adopts the form of spiral gas mixing, which has high mixing efficiency. The oxygen and air are respectively introduced into two spiral pipes. Due to the characteristics of the spiral structure, the gas will be accelerated in the pipes, and the air and oxygen will pass through the inclined passages on the pipes respectively. The holes are collided to improve the air mixing efficiency and provide comfortable air.

The stretcher rotating baffle of the invention is arranged on the stretcher support frame through the rotating assembly, and only needs to rotate the rotating assembly when the stretcher needs to be disassembled, so as to realize the rapid disassembly and assembly of the stretcher; the stretcher support frame and the stretcher adapter plate are connected by a locking assembly , can realize the quick disassembly and assembly of the host and the fixing device; the fixing scheme can make the host be reliably fixed on the stretcher, and can adapt to the complex and harsh environment in the field.

The invention clamps the turbine up and down through the first buffer assembly and the second buffer assembly arranged in the turbine bracket, which can not only restrain the turbine firmly and reliably, and prevent the turbine from loosening; The impact damages the turbine, and at the same time, the device also constructs a channel connected with the turbine outlet and inlet to ensure reliable sealing between the channel and the turbine.

Description of drawings

Fig. 1 is the internal structure schematic diagram of life support system host computer of the present invention;

Fig. 2 is the front view of Fig. 1 of the present invention;

Fig. 3 is the rear view of Fig. 1 of the present invention;

Fig. 4 is the left side view of Fig. 1 of the present invention;

Fig. 5 is the top view of Fig. 1 of the present invention;

Fig. 6 is the bottom view of Fig. 1 of the present invention;

7 is a schematic diagram of a mechanical ventilation module of the present invention;

8 is an exploded view of the oxygen mixing device of the present invention;

Fig. 9 is the rear view of the oxygen mixing device of the present invention;

Fig. 10 is A-A sectional view in Fig. 9 of the present invention;

11 is a schematic structural diagram of the main frame of the oxygen mixing module in the oxygen mixing device of the present invention;

Figure 12 is an exploded view of the turbine fixture of the present invention;

13 is a schematic diagram of the vibration signal calculation of the present invention;

14 is a schematic diagram of vibration signal compensation according to the present invention;

Fig. 15 is an exploded view of the breathing air inlet module of the present invention;

Fig. 16 is the structural representation of the infusion device of the present invention;

17 is a cross-sectional view of the infusion device of the present invention;

FIG. 18 is a schematic diagram of part of the structure in FIG. 17 of the present invention;

Figure 19 is an exploded view of the stretcher fixing device of the present invention;

Figure 20 is a schematic structural diagram of the stretcher fixing device of the present invention;

Figure 21 is a cross-sectional view of the stretcher fixing device of the present invention.

Among them: 1. Main frame of the main frame, 11. Base plate of the main frame, 12. Main frame, 13. Interface plate, 14. Trachea limit sheet metal a, 15. The first cushion of the expiratory assembly, 16. The second of the expiratory assembly Buffer pad, 17, first pipe, 18, trachea limit sheet metal, 19, second pipe, 20, third pipe;

2. Breathing module, 21, Breathing gas interface module, 22, Breathing suction port module, 221, Suction port body, 222, Self-inhalation valve sealing ring, 223, Self-inhalation valve seat, 224, Autonomous Inhalation check valve, 225, plug sealing ring, 226, self-inhalation check valve seat, 227, left fixing bracket, 228, expiratory reverse check valve, 229, expiratory reverse check valve sealing ring , 2210, Expiration Reverse Check Valve Seat, 2211, Flow Sensor, 2212, Right Fixing Bracket, 2213, Fastening Screw, 23, Breathing Exhaust Port Module;

3. Mechanical ventilation module, 31, air delivery pipeline, 32, low pressure oxygen delivery pipeline, 33, high pressure oxygen delivery pipeline, 35, turbine, 36, suction main pipe, 37, first check valve, 38, gas blocking passage, 310, first filter, 311, second filter, 312, second one-way valve, 313, third filter, 314, second pressure sensor, 315, fourth filter, 316, first Flow sensor, 317, second flow sensor, 318, exhalation main pipe, 320, exhalation valve, 321, third one-way valve, 322, gas main pipe, 323, proportional valve;

4. Oxygen mixing device, 41, Main frame of oxygen mixing module, 42, Spiral mixing oxygen heating module, 421, Mixing oxygen heating rod, 422, Outer sleeve of mixing oxygen heating rod, 423, Spiral oxygen pipe, 424, Spiral shape air pipe, 425, oblique through hole, 43, oxygen inlet, 44, air inlet, 45, oxygen delivery cavity, 46, air delivery cavity, 47, intake turbo pressure valve, 471, turbo pressure valve end cover, 472, turbo fan, 473, turbo pressurization valve main frame, 48, outlet turbo pressurization valve, 49, mixing chamber, 491, mixing module rear baffle, 492, mixing module front baffle, 410 , Mixed gas outlet;

52. Turbine inverted ring, 53, Turbine fixing pin, 54, Turbine outlet silicone tube, 55, Turbine damping pad, 56, Turbine base bracket, 57, Turbine inlet silicone tube, 58, Turbine top bracket, 59, Fastening screw;

61. Infusion rod assembly, 61a, infusion rod hook, 61b, infusion rod, 61c, shrapnel, 61d, pressing post, 61e, unlocking post, 62, waterproof silicone assembly, 62a, interface plug, 62b, waterproof sleeve, 63, infusion Rod fixing assembly, 63a, infusion rod fixing sleeve, 63b, infusion rod fixing nut;

7. Stretcher fixing device, 71, Stretcher rotating baffle, 72, Clamping friction plate, 73, Silicone gasket, 74, Friction washer, 75, Stretcher shaft, 76, Stretcher, 77, Stretcher support frame, 78, Rotating handle, 79, unlocking handle, 79a, unlocking handle hook, 710, limit positioning pin, 711, compression spring, 712, stretcher support pad, 713, guide post, 714, stretcher adapter plate, 714a, stretcher adapter plate bayonet ;

8. System control module;

9. Gas detection module, 911, first pressure detection mechanism, 911, first connecting branch pipe, 912, first solenoid valve, 913, first pressure sensor, 914, sixth filter, 92, exhalation detection mechanism, 921 , the third flow sensor, 922, the expiratory branch, 923, the fifth filter, 924, the seventh filter, 925, the second solenoid valve, 926, the third solenoid valve, 927, the third pressure sensor, 928, the first Four pressure sensors;

10. Power module, 101, lithium-ion battery, 102, battery interface board.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

A portable universal life support system for emergency treatment in the wild, as shown in FIG. 1 to FIG. 21 , includes a life support system host that is quickly positioned on a stretcher 76 through a stretcher fixing device 7, and the life support system host includes a host shell and a host. An infusion set above the housing with a waterproof seal. A main frame 1 of the main frame is fixed inside the casing of the main frame, and a mechanical ventilation module 3 and a breathing module 2 are positioned inside the main frame of the main frame 1 , and the mechanical ventilation module 3 is located above the breathing module 2 . The mechanical ventilation module 3 is used to provide mixed oxygen for the patient, and can avoid the situation that the patient's exhaled gas cannot be discharged. The breathing module 2 is connected with the mechanical ventilation module 3 to perform breathing therapy on the patient, and can ensure that the patient inhales spontaneously. Exhaled air can be expelled through the mechanical ventilation module 3 .

A system control module 8 is arranged above the main frame 1 of the host, and the controlled end of the mechanical ventilation module 3 is connected to the output end of the system control module 8 .

The mechanical ventilation module 3, as shown in FIG. 7, includes an air intake system for providing an air source for the patient, an exhaust system for discharging the patient's exhaled air into the atmosphere, and a communication between the air intake system and the exhaust system And with the gas main 322 of the breathing module 2.

The intake system includes an air delivery system, a low-pressure oxygen delivery system, a high-pressure oxygen delivery system, an oxygen mixing device 4 , a suction main pipe 36 , a turbine 35 , a first one-way valve 37 and an air resistance passage 38 .

The air conveying system is used to input air in the environment. The air conveying system includes an air conveying pipeline 31 which is connected to the outside atmosphere at one end and communicated with the oxygen mixing device 4 at the other end. The air conveying pipeline 31 is provided with a first filter 310 and the second filter 311, the first filter 310 and the second filter 311 are provided for filtering the outside air.

The low-pressure oxygen delivery system is used for inputting low-pressure oxygen. The low-pressure oxygen delivery system includes a low-pressure oxygen delivery pipeline 32 that is connected to the low-pressure oxygen delivery device at one end and communicated with the oxygen mixing device 4 at the other end. The low-pressure oxygen delivery pipeline 32 is provided with a The second check valve 312 , the third filter 313 and the second flow sensor 317 . The set second one-way valve 312 is used to prevent the mixer in the oxygen mixing device 4 and the high pressure oxygen in the high pressure oxygen delivery system from entering the low pressure oxygen delivery device. The third filter 313 is used to filter the low-pressure oxygen on the low-pressure oxygen delivery pipeline 32 . The second flow sensor 317 is used to detect the total flow of oxygen delivered by the low pressure oxygen delivery system and the high pressure oxygen delivery system.

The high-pressure oxygen delivery system is used for inputting high-pressure oxygen. The high-pressure oxygen delivery system includes a high-pressure oxygen delivery pipeline 333 connected to the high-pressure oxygen delivery device at one end and the low-pressure oxygen delivery pipeline 32 at the other end. A fourth filter 315, a second pressure sensor 314 and a proportional valve 323 are provided. The fourth filter 315 is used to filter the high-pressure oxygen, and the second pressure sensor 314 is used to detect the air pressure on the high-pressure oxygen delivery pipeline 333 . Proportional valve 323 is used to adjust the flow rate of high pressure oxygen.

The air delivery system, the low-pressure oxygen delivery system and the high-pressure oxygen delivery system are intersected and connected with an oxygen mixing device 4, and the air outlet end of the oxygen mixing device 4 is connected with an inspiratory main pipe 36 that provides an air source for the patient, and a turbine 35 is arranged on the inspiratory main pipe 36. , the turbine 35 is used to pump the mixed gas in the oxygen mixing device 4 and adjust the output gas flow and pressure parameters by means of variable speed.

The suction main pipe 36 is also provided with a first one-way valve 37 to prevent the exhaled gas from the exhaust system from entering the oxygen mixing device 4. The suction main pipe 36 is connected with an air resistance passage 38 which is arranged in parallel with the first one-way valve 37 .

The intake main pipe 36 between the turbine 35 and the first one-way valve 37 is provided with a first flow sensor 316 for detecting the gas flow rate on the intake main pipe 36 .

The exhaust system includes an exhalation main pipe 318 which is communicated with the air delivery main pipe 322 , and an exhalation valve 320 and a third one-way valve 321 are sequentially arranged on the exhalation main pipe 318 .

The exhalation valve 320 is used to control the pressure and flow rate of the patient's exhaled gas.

The third one-way valve 321 is used to prevent outside air from entering the expiratory main pipe 318 .

Compared with the shortcomings of the traditional electromechanical ventilation module, the mechanical ventilation module of the present invention adopts the following measures:

A. The large-diameter suction valve downstream of the turbine of the traditional electromechanical ventilation module is cancelled (Note: The large-diameter suction valve is an electronically controllable valve, and the flow and pressure parameters of the turbine output gas can be adjusted by adjusting the valve opening), The flow and pressure parameters of the output gas are adjusted directly by the variable speed of the turbine.

B. Corresponding to step A, change the turbine drive circuit and drive software (or algorithm) from constant speed control to variable speed control.

C. Because the large-diameter inhalation valve is cancelled, the safety valve of the traditional electromechanical ventilation module is cancelled (Note: the traditional safety valve is realized by the electromagnet and the large-diameter valve, which is used to provide an autonomous inhalation path when the ventilator fails) , instead of the turbine air inlet - the turbine directly provides an autonomous suction passage.

D. Because the large-diameter inspiratory valve is canceled, the first one-way valve is added to the inspiratory main pipe to prevent the exhaled gas from flowing back to the inspiratory main pipe during the expiratory phase of double-tube ventilation, thereby causing the harm of CO ₂ repeated inhalation.

E. Because the first one-way valve is added to the inspiratory main pipe, an air resistance passage is connected in parallel with the first one-way valve to prevent the patient from having no expiratory passage when there is a single fault (the expiratory valve is blocked). When the exhalation valve is blocked, the patient's exhaled gas can be vented to the atmosphere through the air resistance passage 38 .

The inhalation main pipe 36 and the exhalation main pipe 318 are respectively provided with a gas detection module 9 for detecting gas conditions. The output end of the gas detection module 9 is connected to the input end of the system control module 8. on the main frame 1 of the main unit below.

The gas detection module 9 includes a first pressure detection mechanism 911 and an exhalation detection mechanism 92 . The first pressure detection mechanism 911 is provided on the suction main pipe 36 for detecting the gas pressure on the suction main pipe 36 . The exhalation detection mechanism 92 is arranged on the expiratory main pipe 318 and is used to detect the gas flow and pressure on the expiratory main pipe 318 .

The first pressure detection mechanism 911 includes a first connecting branch pipe 911 connected to the side of the suction main pipe 36 . The first connecting branch pipe 911 is sequentially provided with a sixth filter 914 , a first solenoid valve 912 and a first pressure sensor 913 , the sixth filter 914 is used to filter the gas to be detected, the first solenoid valve 912 is used to control the opening and closing of the first connecting branch pipe 911 , and the first pressure sensor 913 is used to detect the gas pressure in the first connecting branch pipe 911 .

The exhalation detection mechanism 92 includes a third flow sensor 921 disposed on the expiratory main pipe 318 and an expiratory pressure detection unit disposed on the expiratory main pipe 318 in parallel with the third flow sensor 921 .

The expiratory pressure detection unit includes an expiratory branch pipe 922 arranged in parallel with the third flow sensor 921 on the expiratory main pipe 318, and the expiratory branch pipe 922 is sequentially provided with a fifth filter 923, a second solenoid valve 925, and a third pressure sensor. 927 , the fourth pressure sensor 928 , the third solenoid valve 926 , the seventh filter 924 . The fifth filter 923 and the seventh filter 924 are used to filter the breath exhaled by the patient. The third pressure sensor 927 and the fourth pressure sensor 928 are used to detect the air pressure on the expiratory main pipe 318 .

The oxygen mixing device 4 in the present invention, as shown in FIGS. 8 to 11 , includes an oxygen mixing module main frame 41 and a system control module. The oxygen mixing module main frame 41 is provided with an oxygen inlet 43 , an air inlet 44 and a mixed gas outlet. 410, the oxygen inlet 43 and the air inlet 44 are respectively provided with valves.

An oxygen mixing cavity 49 communicated with the mixed gas outlet 410 is provided inside the oxygen mixing module main frame 41 . The oxygen mixing module main frame 41 is provided with an oxygen mixing module rear baffle 491, the end of the oxygen mixing module main frame 41 is provided with an oxygen mixing module front baffle 492, and the oxygen mixing cavity 49 is formed by the oxygen mixing module rear baffle 491. , The front baffle plate 492 of the mixing module and the inner wall of the main frame 41 of the mixing module are formed.

The oxygen inlet 43 is arranged at the top of the main frame 41 of the oxygen mixing module, and the air inlet 44 is arranged on the rear baffle 491 of the oxygen mixing module.

An oxygen delivery cavity 45 communicated with the oxygen inlet 43 is provided on the top wall of the main frame 41 of the oxygen mixing module, and oxygen can be delivered to the inside of the oxygen delivery cavity 45; The air delivery cavity 46 communicated with the inlet 44 can deliver air to the inside of the air delivery cavity 46 .

The air inlet 44 is provided with an intake turbo pressurizing valve 47 and an air pump, and the mixture outlet 410 is provided with an outlet turbo pressurizing valve 48 having the same structure as the intake turbo pressurizing valve 47 , the intake turbo pressurizing valve 47 and the outlet turbo The controlled ends of the pressurizing valve 48 are respectively connected to the output ends of the system control module.

The intake turbo pressurizing valve 47 includes a turbo pressurizing valve end cover 471, a turbo fan 472, a turbo pressurizing valve main frame 473, and a turbo pressurizing valve end cover 471 is respectively provided on both sides of the turbo pressurizing valve main frame 473. A turbo fan 472 is provided inside the pressurizing valve main frame 473 .

The oxygen inlet 43 is provided with an oxygen flow sensor and a proportional valve, the oxygen flow sensor is used to detect the oxygen flow at the oxygen inlet, the proportional valve is used to control the input oxygen flow, and the output end of the oxygen flow sensor is connected to the input end of the system control module, The controlled end of the proportional valve is connected to the output end of the system control module.

The mixed gas outlet 410 is provided with a total flow sensor for detecting the total flow of the mixed gas at the mixed gas outlet 410, and the output end of the total flow sensor is connected to the input end of the system control module.

A spiral-type oxygen-mixing heating module 42 is communicated with the inside of the oxygen-mixing cavity 49, and the controlled end of the spiral-type oxygen-mixing heating module 42 is connected to the output end of the system control module. The helical oxygen mixing heating module 42 is respectively communicated with the oxygen inlet 43 and the air inlet 44, and is used for mixing the introduced oxygen and air in the form of spiral mixing, and heating the introduced oxygen and air.

The helical oxygen mixing heating module 42 includes an oxygen mixing heating rod outer sleeve 422 , an oxygen mixing heating rod 421 , a helical oxygen duct 423 and a helical air duct 424 .

The outer sleeve 422 of the mixed oxygen heating rod is connected and arranged between the top wall and the bottom wall of the main frame 41 of the mixed oxygen heating rod. The air hole enables the mixed oxygen and air to enter the inside of the oxygen mixing chamber 49 through the exhaust hole.

The mixed oxygen heating rod 421 is arranged inside the outer sleeve 422 of the mixed oxygen heating rod, and the controlled end of the mixed oxygen heating rod 421 is connected to the output end of the system control module. The top wall and the bottom wall of the oxygen mixing module main frame 41 are respectively provided with holes and grooves, and the oxygen mixing heating rods 421 are arranged in the holes and grooves.

The outer side of the oxygen mixing heating rod 421 is spirally wound with a spiral oxygen pipeline 423 communicating with the oxygen delivery cavity 45 and a spiral air pipeline 424 communicating with the air delivery cavity 46 . Specifically, a first helical groove and a second helical groove are sequentially opened on the outer side wall of the oxygen-mixed heating rod 421 . The first helical groove is used for embedding the helical oxygen pipe 423 , and the second helical groove is used for embedding the helical air pipe 424 .

The side walls of the spiral oxygen duct 423 and the spiral air duct 424 are respectively provided with oblique through holes 425, and the air and oxygen collide through the oblique through holes on the pipelines respectively to improve the mixing efficiency and provide comfortable air.

In order to ensure that the sprayed mixed gas has a certain humidity, an air humidification film is also provided inside the oxygen mixing cavity 49 in the present invention, and the mixed gas can pass through the air humidification film and then be discharged from the mixed gas outlet 410 .

In order to make the device as a whole have the function of heat preservation, so that the temperature of the mixed gas after heating can be kept within a certain range, so as to provide the patient with air of a comfortable temperature, a heating sheet is provided on the outer wall of the main frame 41 of the oxygen mixing module in the present invention, and the heating sheet passes through the heating sheet. The interior of the main frame 41 of the oxygen mixing module is insulated, and the controlled end of the heating sheet is connected to the output end of the heat preservation controller. The heat preservation controller is provided with a bus interface, and the heat preservation controller and the system control module are interactively connected.

When assembling the oxygen mixing device 4 of the present invention, firstly, two pieces of turbo fan are assembled on the positioning columns on both sides of the main frame of the turbo pressurized valve, and then the two turbo pressurized valve end covers are respectively assembled on the main body of the turbo pressurized valve. Then install the two installed turbo pressure valves at the air inlet 44 and the air mixture outlet 410 respectively, and then wrap the spiral oxygen pipe 423 and the spiral air pipe 424 on the oxygen mixing heating rod respectively. In the reserved groove of 421, insert the oxygen mixing heating rod 421 into the hole and groove reserved for the oxygen mixing heating rod, and then put the outer sleeve 422 of the oxygen mixing heating rod on the outside of the oxygen mixing heating rod 421, and then put the assembled mixed heating rod. The oxygen heating rod 421 is installed in the cavity at the rear of the oxygen mixing module main frame 41. The upper side of the oxygen mixing module main frame 41 is connected to the helical oxygen pipe 423, and the lower side is connected to the helical air pipe 424. The rear baffle 491 is assembled at the rear of the oxygen mixing module main frame 41 .

The upstream of the air inlet 44 of the present invention is the external environment. When the oxygen mixing device 4 of the present invention works, according to the set oxygen concentration value, the proportional valve and the oxygen flow sensor output a certain flow of oxygen through feedback control, and the oxygen enters the oxygen through the proportional valve. In the conveying cavity 45, the oxygen enters into the helical oxygen pipe 423, and is discharged into the outer sleeve 422 of the oxygen-mixed heating rod from the inclined through hole of the helical oxygen pipe 423. At the same time, through the action of the air pump, the air enters the air delivery cavity 46 from the air inlet 44, and then the air enters the spiral air duct 424, and is discharged from the oblique through hole of the spiral air duct 424 to the oxygen mixing heating rod. in the outer sleeve 422. Air and oxygen are collided through the inclined through holes on the pipe respectively, which improves the mixing efficiency and provides comfortable air.

In the process of air and oxygen delivery and mixing, the oxygen mixing heating rod 421 heats the air and oxygen, so that the mixed gas has a certain temperature, and the mixed gas is discharged from the outer sleeve 422 of the oxygen mixing heating rod to the oxygen mixing rod in cavity 49.

The turbine downstream of the mixed gas outlet will inhale and mix the oxygen in the mixing device and a part of the air entering the oxygen mixing device from the air inlet, and then send it to the downstream. The system control module calculates the current oxygen concentration by the system control module.

In addition, the present invention can also set the inside of the oxygen mixing device as a labyrinth-like structure, and there is a section of the chamber of the labyrinth structure between the oxygen inlet and the air inlet. The labyrinth structure can temporarily store oxygen and make the breathing module output 100%. oxygen concentration gas.

When it is necessary to control 100% oxygen concentration, the gas extracted by the turbine must be completely output oxygen by the proportional valve, but due to the delay of control and the error of the flow sensor, it is impossible to guarantee the gas flow a extracted by the turbine and the proportional valve. The gas flow b is the same. With the continuous feedback control, the gas flow a always fluctuates up and down the gas flow b. When the gas flow rate b delivered by the proportional valve is greater than the gas flow rate a1 extracted by the turbine, the excess gas will flow to the air inlet direction. Since there is a cavity formed by a labyrinth structure between the oxygen inlet and the air inlet, oxygen will not immediately flow from the air inlet. At this time, the total flow sensor detects that the gas flow a1 extracted by the turbine is less than the gas flow b controlled by the proportional valve, which will increase the flow a1 extracted by the turbine, and the flow extracted by the turbine will increase from a1 to a2. The flow rate b provided by the proportional valve will suck the gas in the labyrinth structure in the oxygen mixing device into the turbine. Since the gas in the labyrinth structure is the oxygen more discharged from the oxygen inlet just now, it can be guaranteed that although the turbine extracts the gas in the oxygen mixing device. gas, but still 100% pure oxygen, thus ensuring the accuracy of 100% oxygen concentration control.

The turbine 35 in the present invention is arranged inside the main frame 1 of the main engine through the turbine fixing device. The turbine fixing device, as shown in FIG. 12 , includes a turbine bracket arranged on the outside of the turbine 35. The bottom end of the turbine bracket is provided with a first through hole for passing the motor, wires and terminals of the turbine 35, and the top of the turbine bracket is provided with a first through hole. There is a second through hole communicated with the air inlet of the turbine 35 , and a gap communicated with the air outlet of the turbine 35 is formed on the side of the turbine bracket.

The turbine bracket includes a turbine base bracket 56 and a turbine top bracket 58 that are detachably connected. The first through hole is opened on the turbine base bracket 56 , and the second through hole is opened on the turbine top bracket 58 .

A first buffer component for buffering is provided between the bottom end of the inner wall of the turbine bracket and the bottom end of the casing of the turbine 35 , and a buffer is provided between the top end of the inner wall of the turbine bracket and the top end of the casing of the turbine 35 for buffering the second buffer assembly.

The first buffer assembly includes a turbine vibration damping pad 55, the bottom end of which is fixed with the top end of the turbine base bracket 56 and the top end is fixed with the bottom end of the casing of the turbine 35. The inside of the turbine damping pad 55 is a hollow structure. The turbine vibration damping pad 55 is provided with a third through hole, and the third through hole can allow the motor, wires and terminals of the turbine 35 to pass through.

The top end surface of the turbine vibration damping pad 55 is provided with a first clamping groove, and the bottom end surface of the casing of the turbine 35 is provided with a plurality of first clamping protrusions matched with the first clamping grooves.

The bottom end of the turbine vibration damping pad 55 is integrally provided with a plurality of first undercut structures, and the turbine base bracket 56 is provided with a plurality of first clamping holes respectively adapted to the first undercut structures.

The first inversion structures are respectively arranged at the bottom ends of the first clamping grooves, the first clamping grooves, the first clamping protrusions and the first inversion structures are respectively provided with pin holes correspondingly, and the turbine base bracket 56 and the turbine reducer are respectively provided with pin holes. The vibration pad 55 and the casing of the turbine 35 are fixed by the turbine fixing pins 53 passing through the pin holes.

The second buffer assembly includes a silicone pad fixed with the bottom end of the turbine top bracket 58 and the top end of the casing of the turbine 35 . The inside of the silicone pad is set as a hollow structure.

The bottom end surface of the silicone pad is provided with a second clamping groove, and the top surface of the casing of the turbine 35 is provided with a plurality of second clamping protrusions matched with the second clamping grooves.

The top of the silicone pad is integrally provided with a plurality of second inversion structures, and the turbine top bracket 58 is provided with a plurality of second clamping holes which are respectively adapted to the second inversion structures.

The second undercut structures are respectively arranged at the top ends of the second snap grooves. The second snap grooves and the second undercut structures are respectively provided with pin holes correspondingly. Secured by a second turbine securing pin through the pin hole.

The silicone pad is integrally connected and provided with a turbine inlet silicone tube 57 which passes through the second through hole and communicates with the air inlet of the turbine 35 .

A turbine undercut ring 52 is fixedly arranged at the air inlet of the turbine 35 , and the turbine 35 and the turbine undercut ring 52 are fixed by gluing. The turbine inlet silicone tube 57 is fitted on the turbine inverted ring 52 by interference.

The turbine fixing device of the breathing module further includes a turbine outlet silicone tube 54, and the turbine outlet silicone tube 54 is in an interference fit with the air outlet of the turbine 35 and protrudes from the opening of the turbine bracket.

The left side of the turbine base bracket 56 is bent upward and provided with a card seat, and the left side of the turbine top bracket 58 is arranged in an opening shape. The turbine outlet silicone tube 54 is provided with a clip slot, and the clip slot is matched with the clip seat for restricting the circumferential and forward and backward movement of the turbine outlet silicone tube 54 .

In the present invention, when assembling, firstly, the turbine 35 and the turbine undercut ring 52 are fixed by gluing, one end of the turbine fixing pin 53 is tapped with a thread, and the turbine fixing pin 53 is screwed into the corresponding pin hole of the turbine 35 through the thread, and then The silica gel 54 tube at the turbine outlet is inserted into the outlet of the turbine 35. The silica gel 54 at the turbine outlet is made of silica gel, which is soft and elastic. The silica gel tube 54 at the turbine outlet is an interference fit with the outlet of the turbine 35, and the turbine is realized by the interference in the diameter direction. The seal between the outlet of 35 and the turbine outlet silicone tube 54.

Put the turbine vibration damping pad 55 into the turbine base bracket 56, the turbine vibration damping pad 55 has 53 inversion structures, the material of the turbine vibration damping pad is silica gel, and the 53 inversion structures of the turbine vibration damping pad 55 will be snapped into In the holes corresponding to the turbine base bracket 56 , the turbine vibration damping pad 55 is fixed on the turbine base bracket 56 through the inverted structure of the turbine vibration damping pad 55 .

The turbine 35 is inserted into the turbine vibration damping pad 55 , and the motor, wires and terminals of the turbine 35 pass through the turbine vibration damping pad 55 and the first through holes of the turbine base bracket 56 . During the assembly process, the turbine fixing pins 53 mounted on the turbine 35 are inserted into the corresponding holes of the turbine vibration damping pad 55 and the turbine base bracket 56 .

There is a slot on the turbine outlet silicone tube 54. The slot of the turbine outlet silicone tube 54 installed on the turbine 35 is inserted into the slot of the turbine base bracket 56, and the turbine outlet silicone tube is restricted by the cooperation of the slot and the slot. 54 circumferential and fore-and-aft movements.

Put the turbine inlet silicone tube 57 into the turbine top bracket 58, the top of the silicone pad integrally connected with the turbine inlet silicone tube 57 has 52 inverted structures, the turbine inlet silicone tube 57 is made of silicone, and the 52 inverted silicone pads The buckle structure is snapped into the corresponding pin hole of the turbine top bracket 58 , and the silicone pad and the turbine inlet silicone tube 57 are fixed on the turbine top bracket 58 through the inverted buckle structure of the silicone pad.

Put the turbine inlet silicone tube 57 on the turbine 35, the turbine inlet silicone tube 57 and the turbine inverted ring 52 glued and fixed on the turbine 35 are interference fit, through the interference deformation of the turbine inlet silicone tube 57 in the diameter direction , to achieve sealing between the turbine inlet silicone tube 57 and the turbine 35 inlet. During the assembly process, the screw holes of the turbine top bracket 58 are corresponding to the screws of the turbine base bracket 56, and are locked and fastened by tightening screws 59.

The turbine 35 is clamped up and down by the turbine inlet silicone tube 57 and the turbine vibration damping pad 55, which restricts the up and down movement of the turbine 35. The turbine fixing pins 53 fixed on the turbine 35 are inserted into the corresponding holes of the turbine vibration damping pad 55 and the turbine base bracket 56 In the middle, the movement of the turbine 35 in front, back, left, right and rotation is restricted.

The turbine vibration damping pad 55 is a hollow structure, the bottom of the turbine vibration damping pad 55 is supported by the ribs, and the ribs are hollow, so that the turbine vibration damping pad 55 can deform after being stressed, consume vibration energy, and realize the turbine 35 and the rib. Vibration damping between turbine base mount 56 and turbine top mount 58 . At the same time, there is an inverted structure of the turbine vibration damping pad 55 between the turbine fixing pin 53 and the turbine base bracket 56, so as to realize the vibration damping effect of the turbine fixing pin 53 and the turbine base bracket 56 in the horizontal direction.

During field transportation, the vibration of the breathing module may lead to unstable control of the turbine speed, which further leads to the instability of the flow rate or pressure of mechanical ventilation, which may reduce the comfort of patients using mechanical ventilation, and may even reduce the comfort of mechanical ventilation to patients. treatment effect. Generally, the turbine of the breathing module and the casing of the breathing module are connected in a flexible manner, and external disturbances are isolated from the turbine through a mechanical device, but the ability to suppress disturbances is limited. In ventilation control, there is also a flow rate or pressure control loop in the outer layer of the turbine speed loop. Through the feedback control of the outer loop, the influence of the unstable turbine speed on ventilation control can be reduced. However, due to the existence of flow rate or pressure signal sampling Time delay, resulting in the inability to offset the impact of disturbance on ventilation in time.

In order to solve the above technical problems, the turbine 35 in the present invention is set as a variable-speed turbine that adjusts the output gas flow and pressure parameters by means of variable speed, so as to solve the problem that the speed control is not stable due to the bumping of the breathing module, which further causes the flow rate and pressure to control. Smooth question to dampen the effect of breathing module bumps on breathing module ventilation.

13 and 14, the method adopted by the present invention for turbine speed change control is as follows: an accelerometer is installed inside the breathing module, the disturbance signal that affects the control of turbine operating parameters from the outside is obtained through the accelerometer, and the turbine rotational speed control input is made according to the disturbance signal. Compensation is performed to reduce the impact of disturbances on turbine speed control. Turbine operating parameters include turbine speed, flow rate, or pressure.

The method specifically includes the following steps:

S1. Obtain the speed control model of the turbine according to the motor parameters provided by the turbine manufacturer or adopt the system identification method.

S2. Install an accelerometer inside the breathing module.

After the accelerometer is installed inside the breathing module, the turbine runs at a constant speed, and the breathing module is used in a simulated field environment. The signal reflecting the vibration degree of the breathing module body is extracted from the acceleration signal, and the turbine speed signal is recorded at the same time.

S3, using system identification to establish a disturbance channel model from vibration signal to turbine speed signal.

S4. According to the frequency domain characteristics of the vibration signal, a controller is designed to actively reduce the influence of disturbance. The controller includes a main controller and a compensation controller.

Before the controller design, the speed control model and disturbance channel model of the turbine have been obtained. In the design process of the main controller of the speed control, on the premise of ensuring the rapid response of the system, the main controller can be used to isolate the disturbance signal according to the frequency band of the vibration signal.

At the same time, according to the disturbance channel model, the compensation controller according to disturbance compensation can be designed.

The main controller and the compensation controller are designed according to the vibration signal or the disturbance channel model, which can greatly reduce the impact of vibration on the turbine speed.

S5 , extracting a method for reflecting the vibration intensity from the acceleration signal, and obtaining a one-dimensional vibration intensity signal.

In step S5, a neural network can be used to input the acceleration signals in the three directions of the X-axis, the Y-axis and the Z-axis into the learning model to obtain a one-dimensional vibration strength signal. The vibration signal calculation method is not limited to the neural network, and other methods can also be used to convert the three-dimensional signal into a one-dimensional signal. The modulus value of the composite vector of the acceleration in three directions can be simply used.

S6. Steps S1-S5 are all designed offline. When the breathing module is running online, the signal reflecting the vibration intensity extracted from the acceleration signal is input to the compensation controller for compensation.

The invention installs an accelerometer in the breathing module and extracts the vibration signal. According to the frequency domain characteristics of the vibration signal, a controller that actively reduces the influence of the disturbance is designed, which can ensure the smooth control of the turbine speed, thereby ensuring the smooth control of the turbine flow rate or the pressure signal, so that the breathing module can be controlled smoothly. A good ventilation treatment effect can be obtained even in the field environment.

The breathing module 2 of the present invention communicates with the gas delivery main pipe 322 through the breathing gas interface module 21 . The breathing module 2 includes a breathing suction port module 22 and a breathing exhaust port module 23 that are respectively communicated with the air delivery main pipe 322.

The breathing air inlet module 22, as shown in FIG. 15, includes an air inlet installed on the main frame of the host through the left fixing bracket 227, and the air inlet includes the air inlet body 221. The right end of the air inlet body is the air inlet, and the right end of the air inlet body is installed on the main frame of the host through the right fixing bracket 2212 and communicated with the air intake system of the mechanical ventilation module 3; the left end of the air inlet body 221 is used for For the air outlet for supplying air to the patient, the left end of the air inlet body 221 protrudes out of the left fixing bracket.

The side wall of the suction port body is also provided with an autonomous suction hole, and the autonomous suction hole is equipped with an autonomous suction valve that connects the air outlet at the left end of the suction port body with the outside world when the breathing module fails.

The self-inhalation valve includes a self-inhalation valve seat 223, a self-inhalation check valve 224 and a self-inhalation check valve seat. The self-inhalation valve seat 223 is fitted on the self-inhalation hole, and the self-inhalation valve seat 223 is A cylindrical structure with open ends. The inner end of the self-inhalation valve seat 223 is communicated with the main body of the air inlet through the self-inhalation hole, the self-inhalation check valve 224 is arranged in the cylinder of the self-inhalation valve seat 223, and the self-inhalation one-way valve seat 226 is assembled in the self-inhalation valve seat 226. At the outer end of the suction valve seat 223, a plurality of ventilation holes are opened on the self-inhalation one-way valve seat 226. The spontaneous inhalation one-way valve seat 226 cooperates with the spontaneously inhaled one-way valve 224 to realize the opening and closing of the spontaneous breathing passage.

The self-inhalation one-way valve seat 226 is threadedly connected to the inner end face of the outer end of the self-inhalation valve seat 223, and a plug sealing ring 225 is embedded between the self-inhalation one-way valve seat 226 and the annular seam of the self-inhalation valve seat 223; A self-inhalation valve sealing ring 222 is provided between the self-inhalation valve seat 223 and the annular seam where the self-inhalation hole is assembled. By arranging the plug sealing ring 225 and the self-inhalation valve sealing ring 222, the air inlet can be sealed under normal working conditions, and the problem of air leakage can be avoided.

In the present invention, the self-inhalation one-way valve 224 is an umbrella-shaped structure, and the material is rubber; The umbrella handle of the air one-way valve 224 is provided with annular barbs, and the umbrella handle of the self-inhalation one-way valve 224 is fitted with the central vent hole of the self-inhalation one-way valve seat 226 to realize the self-inhalation one-way valve 224. position. During the assembly process, the umbrella handle barb structure of the self-inhalation check valve 224 will be inserted into the central vent hole of the self-aspirated one-way valve seat 226, and the inverted structure will exert a reverse direction on the self-aspirated one-way valve 224. When the surface pressure of the shed toward the air inlet body is greater than or equal to the surface pressure toward the self-inhalation check valve seat 226, the shed of the self-inhalation check valve 224 will be in close contact with the self-inhalation check valve seat 226 surface to achieve sealing; when the surface pressure of the shed towards the suction port body is less than the surface pressure towards the self-suction one-way valve seat 226, the shed is deformed from the self-suction one-way valve seat 226 to the suction port body , the self-inhalation one-way valve 224 is opened, and the gas in the external environment enters the inside of the valve body through the ventilation hole on the self-inhalation one-way valve seat 226 .

In order to ensure the reliable and firm installation of the self-inhalation valve, the present invention provides an annular groove on the outer wall of the self-inhalation valve seat 223, and correspondingly, the side of the left fixing bracket 227 facing the self-inhalation hole is provided with an arc-shaped clip. During installation, the arc-shaped clamping block is clamped in the annular groove to realize the positioning of the independent suction valve seat and the suction port body; at the same time, a pair of symmetrically arranged on the left and right sides of the outer wall of the independent suction valve seat 223 Positioning post with internal thread, the internal thread of the positioning post is equipped with a fastening screw 2213 that presses the arc block on the outer wall of the suction port body.

In order to prevent the gas exhaled by the patient from entering the oxygen delivery tube, the inhalation port and the breathing module in the reverse direction, the present invention is equipped with a matching exhalation reverse check valve 228 and an exhalation reverse check valve in the air outlet at the right end of the inhalation port body. toward the valve seat 2210. The outer circumference of the exhalation reverse check valve seat 2210 is provided with an annular sealing groove, and the annular sealing groove is embedded with an exhalation reverse check valve sealing ring 229, which is connected to the inhalation reverse check valve sealing ring 229. The inner wall of the mouth body is in close contact to realize the sealing of the air outlet.

In order to accurately measure the oxygen delivery or spontaneous breathing flow, the present invention is provided with a flow sensor 2211 between the air outlet at the right end of the inspiratory port body and the right fixed bracket 2212, and the left end of the flow sensor 2211 is threaded with the exhalation reverse check valve seat 2210 Connection, the right end of the flow sensor 2211 is assembled with the oxygen output hole on the side wall of the box. A positioning hole is respectively set on the left and right ends of the bottom end face of the flow sensor. The bottom end face of the corresponding air inlet body and the bottom end face of the right fixing bracket are coaxially provided with a positioning column with an internal thread. It is installed by fastening screws through the positioning holes and positioning posts.

When assembling the present invention, firstly put the self-suction valve sealing ring 222 on the position corresponding to the self-suction valve seat 223, then put the plug sealing ring 225 on the self-suction one-way valve seat 226, and then put the self-suction valve seat 226. The one-way valve 224 is installed on the self-inhalation one-way valve seat 226; then the self-inhalation valve seat 223 is installed into the self-inhalation hole of the air inlet body 221, and then the arc block of the left fixing bracket 227 is inserted into In the annular groove corresponding to the independent suction valve seat 223, tighten the fastening screws, the left fixing bracket 227 plays the role of fixedly connecting the independent suction valve seat 223 and the suction port 1, and the suction port fixing bracket 227 and the suction port 1 Tighten by tightening the screws.

Install the expiratory reverse one-way valve 228 into the expiratory reverse one-way valve seat 2210, and then install the expiratory reverse one-way valve sealing ring 229 into the annular sealing groove corresponding to the expiratory reverse one-way valve seat 2210 , install the exhalation reverse check valve seat 2210 into the air outlet of the inhalation port body, and then install the flow sensor 2211 into the air outlet of the inhalation port body, and fasten the flow sensor to the right fixing bracket 2212 by tightening the screws. Connected to the air inlet body.

When the present invention is normally ventilated, the umbrella skirt of the self-inhalation check valve 224 is close to the self-inhalation one-way valve seat 226, and the umbrella skirt completely blocks the ventilation hole on the self-inhalation one-way valve seat 226, and the suction port The gas in the body will not be discharged from the ventilation hole of the self-inhalation check valve seat 226, but will be delivered to the patient through the expiratory reverse check valve 228 and the flow sensor 2211. When the power supply is interrupted and the patient needs to inhale spontaneously, the umbrella skirt of the spontaneous inhalation check valve 224 is deformed, the vent hole of the spontaneous inhalation check valve seat 226 covered by the spontaneous inhalation check valve 224 is exposed, and the outside air flows from The ventilation hole of the self-inhalation one-way valve seat 226 flows into the inhalation port body 221, and then enters the patient's body from the inhalation port main body 221, thereby realizing spontaneous inhalation.

The infusion device, as shown in FIG. 16 to FIG. 18 , includes an infusion rod assembly 61 , a waterproof silicone assembly 62 and an infusion rod fixing assembly 63 .

The infusion rod assembly 61 is used for hooking up the infusion bag, and the infusion rod assembly 61 includes an infusion rod 61b, a connecting rod and an infusion rod hook 61a.

The infusion rod 61b is provided in the shape of a hollow cavity, and the infusion rod 61b is a thin-walled stainless steel tube. The connecting rod is laterally arranged at the top end of the infusion rod 61b.

The infusion rod hook 61a is provided on the connecting rod. The infusion rod hook 61a is an inwardly bent ring, and this structure ensures that the hung infusion bag is not easy to fall off.

The infusion rod 61b and the connecting rod and the connecting rod and the infusion rod hook 61a are all fixed together by welding.

The infusion rod assembly 61 is made of stainless steel, which not only ensures its own strength, but also does not rust when used in harsh external conditions for a long time.

The infusion rod fixing assembly 63 is used to position the infusion rod assembly 61 and the waterproof silicone assembly 62 on the back shell 12 of the main unit.

The infusion rod fixing assembly 63 includes an infusion rod fixing sleeve 63a for embedding the infusion rod 61b and an infusion rod fixing nut 63b threadedly fitted with the infusion rod fixing sleeve 63a, and the infusion rod fixing nut 63b is used for positioning the infusion rod assembly 61 to the on the rear shell 12 of the host.

The infusion rod fixing sleeve 63a includes a flange structure and a fixing sleeve integrally provided with the flange structure. The outer side wall of the fixing sleeve is provided with an external thread matched with the fixing nut 63b of the infusion rod.

The waterproof silicone assembly 62 is used to prevent the liquid in the infusion rod assembly 61 from flowing into the rear shell 12 of the main unit. The waterproof silicone assembly 62 includes a waterproof cover 62b and an interface plug 62a. Both the interface plug 62a and the waterproof cover 62b are made of compressible silicone.

The waterproof sleeve 62b is sealed and embedded in the side of the infusion rod fixing assembly 63, and wraps the bottom end of the infusion rod assembly 61, which can effectively prevent the liquid inside the infusion rod assembly 61 from entering the host.

The bottom end of the side wall of the fixed sleeve is provided with an annular groove, and the bottom end of the waterproof sleeve 62b is integrally provided with an annular plate that is sealed and assembled with the annular groove, so that the waterproof sleeve 62b is sealed and assembled on the fixed sleeve, Not easy to fall off. A sealed cavity structure with an open top is formed between the infusion rod fixing sleeve 63a and the waterproof sleeve 62b.

The interface plug 62a is sealed and pressed between the infusion rod fixing sleeve 63a and the back shell 12 of the main unit to prevent liquid from entering the inside of the main unit. When the threads of the infusion rod fixing sleeve 63a and the infusion rod fixing nut 63b are completely screwed together, the interface plug 62a is compressed, and the gap between the infusion rod fixing sleeve 63a and the main body rear shell 12 is completely filled, which can effectively block the external The liquid enters the interior of the host through the rear shell 12 of the host.

The interface plug 62a includes a first plug and a second plug which is bent downward to form a groove. The top of the side wall of the fixing sleeve is provided with an annular groove, and the second plug gasket is embedded in the annular groove, and is tightly pressed on the rear casing 12 of the main unit by the infusion rod fixing sleeve 63a and the infusion rod fixing nut 63b. The top end of the first plug is in contact with the bottom end of the flange structure of the infusion rod fixing sleeve 63a.

The inside of the infusion rod 61b is provided with a self-locking structure, and the self-locking structure is used to lock and position the infusion rod assembly 61 on the infusion rod fixing sleeve 63a to ensure the stability of the infusion rod assembly 61 . The self-locking structure includes an elastic piece 61c, a pressing column 61d, an unlocking column 61e and a locking groove.

The elastic piece 61c is arranged inside the infusion rod 61b and is arranged in a U shape. One side of the elastic piece 61c is the fixed end fixed on the inner wall of the infusion rod 61b, and the other side of the elastic piece 61c is the movable end.

The movable end of the elastic piece 61c is provided with a pressing column 61d and an unlocking column 61e which move through the infusion rod 61b in sequence from top to bottom, and two through holes are opened on the side wall of the infusion rod 61b. through a through hole. The pressing post 61d and the unlocking post 61e are fixed on the elastic piece 61c by welding.

The inner side wall of the fixing sleeve is provided with a locking groove matched with the unlocking column 61e, and the unlocking column 61e is clamped inside the locking groove.

When the infusion device of the present invention is assembled, after the interface plug 62a is sleeved on the infusion rod fixing sleeve 63a, it passes through the circular hole on the rear shell 12 of the main unit together, and then the infusion rod fixing nut 63b is threadedly connected to the infusion rod fixing sleeve 63a. Squeeze the port plug 62a, so that the port plug 62a has the function of sealing and waterproofing. Next, the waterproof cover 62b is inserted into the annular groove of the infusion rod fixing cover 63a.

When the infusion rod is not inserted, the plug (ie, the second plug) on the interface plug 62a is pressed into the annular groove of the infusion rod fixing sleeve 63a. In the annular groove of the infusion rod fixing sleeve 63a, the liquid entering the infusion rod fixing sleeve 63a can also be effectively blocked.

When the infusion rod assembly 61 is inserted, the pressing post 61d is pressed, and the elastic piece 61c is deformed under the action of the force, which drives the unlocking post 61e to move, and vertically inserts the infusion rod 61b into the sealed cavity structure; when the infusion rod 61b is inserted in place, When the pressing post 61d is released, the unlocking post 61e recovers to move outward due to the elastic force, and slides down into the locking groove of the infusion rod fixing sleeve 63a to realize the locking and positioning of the infusion rod assembly 61 and the infusion rod fixing assembly 63 . At this time, the infusion rod assembly 61 will not fall off due to movement in its vertical direction, which ensures the structural stability of the infusion rod assembly.

The stretcher fixing device 7 , as shown in FIG. 19 to FIG. 21 , includes a stretcher support frame 77 , a stretcher rotating baffle 71 , a rotating assembly, a locking assembly and a stretcher adapter plate 714 .

The stretcher support frame 77 is in contact with the side surface of the stretcher 76 , and the stretcher support frame 77 is in contact with the top surface, the bottom surface and one side surface of the stretcher 76 . The stretcher support frame 77 includes a long top board, a long vertical board, a short bottom board and a short vertical board that are integrally connected. The side surfaces of the stretcher 76 are in contact with each other, and the top end surface of the short vertical plate of the stretcher support frame 77 is in contact with the bottom end surface of the stretcher 76 .

The stretcher rotation baffle 71 cooperates with the stretcher support frame 77 to realize the clamping of the stretcher 76 , and the stretcher rotation baffle 71 is arranged on the stretcher support frame 77 through the rotating assembly.

The rotating assembly is used to drive the stretcher rotating baffle 71 to rotate, so as to realize the quick disassembly and assembly of the stretcher 76 . The rotating assembly includes a stretcher shaft 75 and a rotating handle 78 . The long vertical plate and the short vertical plate of the stretcher support frame 77 are provided with through holes, the stretcher rotating shaft 75 passes through the stretcher support frame 77 and is rotatably arranged on the stretcher support frame 77, and both ends of the stretcher rotating shaft 75 extend out of the stretcher support frame 77. The rotating handle 78 is fixed on one end of the stretcher rotating shaft 75 by screws. The stretcher rotation baffle 71 is fixedly arranged on the other end of the stretcher rotation shaft 75 by screws.

The inner surface of the stretcher rotating baffle 71 is fixed with a clamping friction plate 72 by screws. The clamping friction plate 72 is in contact with the stretcher 76. friction between walls.

The stretcher rotating shaft 75 between the stretcher rotating baffle 71 and the stretcher support frame 77 is also sleeved with a friction washer 74 and a silicone washer 73. The friction washer 74 is in contact with the stretcher support frame 77 . The silicone washer 73 is fixedly arranged between the friction washer 74 and the stretcher rotating baffle 71 .

The stretcher rotating baffle 71 is provided with a limit positioning pin 710 for limiting the rotation angle of the rotating assembly, and the inner side of the stretcher rotating baffle 71 is provided with a groove matched with the limit positioning pin 710 .

Above the stretcher support frame 77 is connected and provided a stretcher adapter plate 714 fixed on the host through a locking assembly.

The locking assembly includes an unlocking handle 79 arranged on the stretcher support frame 77, the unlocking handle 79 is provided with a plurality of unlocking handle hooks 79a, and the stretcher adapter plate 714 is provided with a stretcher adapter plate matched with the unlocking handle hooks 79a. Bayonet 714a.

Specifically, the top end of the stretcher support frame 77 is provided with a chute, the unlocking handle 79 is slidably fitted in the chute and one end extends out of the stretcher support frame 77 . The guide post 713 through which the unlocking handle 79 can pass, the unlocking handle hook 79a passes through the guide post 713 , and the stretcher adapter plate 714 is provided with a conical shell adapted to the guide post 713 . One end of the unlocking handle 79 is provided with a protruding post located inside the guide post 713 .

A groove is provided on the top surface of the top plate of the stretcher support frame 77, a stretcher support pad 712 is also provided between the stretcher support frame 77 and the stretcher adapter plate 714, and the stretcher support pad 712 is embedded in the groove.

The assembly process of the stretcher fixing device 7 of the present invention is as follows.

First, the clamping friction plate 72 and the stretcher rotating baffle 71 are fixed by screws to form the clamping friction plate assembly. Then, after fixing the rotating handle 78 to the stretcher shaft 75 by screws, insert it into the through hole of the stretcher support frame 77, and then assemble the friction washer 74, the silicone washer 73 and the clamping friction plate assembly on the other side of the stretcher shaft 75 in sequence, and finally The stretcher rotating baffle 71 and the stretcher rotating shaft 75 are fixed by screws.

Put the unlocking handle 79 into the chute of the stretcher support frame 77, then stick the stretcher support pad 712 on the surface of the stretcher support frame 77, and then pass the screw through the through hole of the stretcher support frame 77 to connect the guide post 713 to the stretcher support frame. 77 fixed.

When the stretcher fixing device 7 of the present invention is actually used, the stretcher adapter plate 714 is fixed in the main body. When the main machine is put down, under the action of the guide column 713, the inner cone hole of the conical shell on the stretcher adapter plate 714 and the guide column 713 The outer conical surfaces fit together, and at the same time, under the action of gravity, the stretcher adapter plate 714 will drive the unlocking handle 79 to move during the falling process, and finally the stretcher adapter plate bayonet 714a and the unlocking handle hook 79a are buckled together to form a buckle. The structure enables the stretcher adapter plate 714 to be reliably fixed in the fixing device. When the host needs to be lifted from the fixing device, the handle of the unlocking handle 79 is pressed to drive the unlocking handle 79 to translate as a whole, so that the unlocking handle hook 79a is separated from the stretcher adapter plate bayonet 714a, and the fixing device is unlocked at this time, and the host can be easily lifted.

The rotating handle 78, the stretcher rotating baffle 71, and the clamping friction plate 72 realize linkage under the action of the stretcher rotating shaft. As shown in FIG. 20 , when the rotating handle 78 is in a horizontal state, the clamping friction plate 72 and the stretcher rotating baffle 71 are in a vertical state, and at this time, the clamping friction plate 72 presses the stretcher 76 tightly against the stretcher support frame 77 . inside the notch, so that the fixing device and the stretcher are connected reliably.

When the fixing device needs to be removed to separate the stretcher support frame 77 from the stretcher 76 , it is only necessary to turn the rotating handle 78 by 790° to make it in a vertical state. When the rotating handle 78 is about to rotate 790°, the rotating handle 78 drives the stretcher rotating shaft 75, the stretcher rotating baffle 71, and the clamping friction plate 72 to rotate 790 degrees. At this time, the stretcher rotating baffle 71 and the clamping friction plate 72 are no longer facing the stretcher 76. For clamping, the stretcher 76 can be directly taken out.

The limit positioning pin 710 is fixed on the stretcher support frame 77, and at the same time, a groove matching the limit positioning pin 710 is processed on the inner surface of the stretcher rotating baffle 71. The limit positioning pin 710 can limit the rotation angle of the rotation handle 78, The risk of uneven force on the stretcher rotating baffle or the stretcher falling off due to the insufficient rotation range of the stretcher rotating baffle 71 is eliminated, and the time for installation and removal of the fixing device is also saved.

When the stretcher rotating baffle 71 and the stretcher rotating shaft 75 are fixed with screws, the silicone gasket 73 is compressed under the action of pressure. At this time, the rotating feel of the rotating handle 78 can be increased. At the same time, the friction washer 74 is made of wear-resistant nylon material. , to ensure the reliability of the fixture after long-term use.

A power supply module 10 for supplying power to the whole device is also provided inside the main frame 1 of the main frame, and the power module 10 is arranged behind the main frame 1 of the main frame. The power module 10 includes a lithium-ion battery 101 and a backup battery. In the present invention, a battery A and a battery B are provided, and the battery A and the battery B can be switched for use.

The present invention realizes power management through MCU. The power module 10 is divided into the following module components:

Charging module: using BUCK topology, each battery is charged separately, the charging electrical performance is controlled by MCU, first trickle current ISET1_PWM charging, then constant current ISET1_PWM charging, and finally floating voltage VCHARGE_PWM charging, when the full charging condition is reached, the MCU turns off charging; using charging The IC power distribution function realizes the system dynamic power distribution function. When the system power reaches the limit threshold, it starts to limit the charging power and give priority to ensuring the system power supply.

Battery management module: Read the battery status register information through I2C and upload it to the host computer through the serial port. Once the battery has abnormal over-temperature, over-voltage and over-current, the MCU controls the charging module to stop charging and alarm.

Main-standby switching circuit: The main-standby switching circuit is divided into two circuits: one is a standby power supply circuit for small current, VBUS_17V and two battery output voltages are switched by ordinary Schottky diodes, and then the standby power supply 3V3_STB is output through step-down, It is mainly powered by MCU and some control circuits; the other is the main power circuit. First, the output voltage of the two batteries is boosted by the BOOST topology VBUS_16.5V, VBUS_16.9V and DC_IN. The output VBUS_17V is switched by an ideal diode with a very small voltage drop. , the output bus voltage VBUS supplies power to the rear-stage high-current load. When DC_IN is online, 17V is greater than 15V, and DC_IN supplies power; when MCU detects that DC_OK is not online, the boosted 15V of battery A and B will be adjusted to 16.5 and 16.9V respectively to supply power to the rear stage. Because the boost of battery B is high For battery A, the power of battery B is used first.

Low power consumption management module: mainly for the power consumption management of the backup battery. Both batteries are connected externally with a PMOS tube, which is controlled by the BAT_EN signal. When the battery is powered off, the MCU turns off the PMOS and cuts off the battery to the rear stage. The circuit is powered to achieve zero power consumption for the power circuit, while the single-chip microcomputer enters a sleep state to achieve low power consumption.

In order to improve the unit space utilization rate and effectively reduce the weight of the product, the present invention adopts the following space arrangement structure:

Assemble and fix the turbine 35 to the middle of the main frame 1 of the main engine by screws, and use two trachea limit sheet metals 18 to limit the turbine 35; then assemble and fix the mechanical ventilation module 3 to the main frame 1 of the main engine by screws and pass through the turbine 35 The interfaces are connected; the breathing gas interface module 21 is assembled and fixed to the side of the main frame 1 of the main unit by screws, the trachea limit sheet metal a14 is used to limit the pipeline by screws, and the breathing gas interface module 21 is mechanically ventilated through the first pipeline 17 Module 3 is connected.

The gas detection module 9 is assembled and fixed on the main frame 1 of the main frame by screws; the breathing air inlet module 22 is fixed to the side of the main frame 1 of the main frame by screws; the first buffer pad 15 of the breathing assembly is installed on (the breathing air inlet On the side of the module 22, the second cushion pad 16 of the exhalation component is assembled on the bottom of the breathing inlet module 22, and the breathing inlet module 22 is connected with the turbine 35 through the second pipeline 19; the breathing inlet module is connected with the turbine 35; The detection vent of 22 is connected to the gas detection module 9 through a hose; the waste discharge port of the breathing exhaust port module 23 is connected to the exhaust gas port through the third pipeline 20, and the detection vent of the breathing exhaust port module 23 is connected. Connected to the gas detection module 9 by two hoses.

Assemble and fix the power module 10 to the back of the mainframe main frame 1 by screw assembly, then fix the interface board 13 to the side of the main frame main frame 1 by screw assembly, and fix the system control module 8 to the top of the main frame main frame 1 by screw assembly; The battery interface boards 102 are assembled and fixed on the back of the main frame 1 of the host with two screws respectively. Finally, the two lithium-ion batteries 101 are inserted into the battery interface boards 102 respectively, and the bottom plate 11 of the main support is assembled and fixed on the main frame 1 of the host with screws. on the bottom.

Timely rescue on the spot is usually an outdoor environment, and the relevant electromagnetic standard immunity test level of the outdoor environment is much higher than the ordinary standard. The patient parameters of the life support system, because they are derived from the sensitive patient physiological signal analogs, are very susceptible to interference, which leads to a great challenge to the electromagnetic shielding efficiency of the whole system, especially the display components are electromagnetically shielded due to their technological characteristics. weak point. Therefore, the electromagnetic shielding problem of the display assembly can be effectively solved, which is one of the problems that the skilled person needs to solve urgently at this stage.

In this regard, the EMC structure of the portable life support system adapted to the field environment is set up in the present invention, including a casing for accommodating the life support system, a circuit board is arranged inside the casing, and a front casing of the casing is provided with an inward opening. A recessed rectangular display screen hole, a display screen assembly is arranged on the display screen hole, and the display screen assembly includes a touch screen and a display screen which are arranged in sequence from the outside to the inside and are bonded and connected with the circuit board through a third adhesive layer, wherein the display screen A transparent glass substrate is arranged on the hole, and the inner side of the transparent glass substrate is pasted with a light-transmitting shielding net through the first adhesive layer; the touch screen is arranged on the inner side of the light-transmitting shielding net through the second adhesive layer, and the outer side of the touch screen is provided with a shielding net. ITO coating for electromagnetic signals.

The present invention also includes a body temperature sensor, an electrocardiogram sensor and a blood oxygen sensor suitable for the portable life support system in the EMC environment. The body temperature sensor is used to measure the temperature of the human body and convert it into a usable output signal; the ECG sensor is used to collect the human heart signal; the blood oxygen probe sensor is used to measure the oxygen concentration in the human blood, that is, blood oxygen saturation.

The body temperature sensor includes a body temperature probe sensor for measuring human body temperature, the signal output end of the body temperature probe sensor is connected with a signal transmission line for transmitting body temperature information, and the other end of the signal transmission line is provided with a connector for connecting to a life support system, wherein the signal transmission line A magnetic ring is set to suppress the interference of the complex high-frequency signals in the complex environment in the field to the body temperature information transmitted on the signal transmission line; the outer part of the magnetic ring is covered with a high-elastic rubber sleeve to prevent the magnetic ring from being damaged and moving on the signal transmission line .

The ECG sensor includes several disposable electrode patches that are attached to the surface of the human skin to collect ECG signals. The signal output end of the electrode patches is connected with a signal transmission line for transmitting ECG information; the signal transmission line includes and the electrode patch. Several lead wires are detachably connected, the other end of the lead wire is connected with the main cable through the junction box, and the other end of the main cable is provided with a connector for connecting to the life support system, wherein the main cable is sleeved with a cable for suppressing A magnetic ring that interferes with the ECG information transmitted on the signal transmission line by complex high-frequency signals in a complex environment in the wild; the outer part of the magnetic ring is covered with a high-elastic rubber sleeve to prevent the magnetic ring from being damaged and moving on the main cable.

The blood oxygen sensor of the present invention includes a blood oxygen probe sensor for measuring the oxygen concentration in human blood, the signal output end of the blood oxygen probe sensor is connected with a signal transmission line for transmitting blood oxygen concentration information, and the other end of the signal transmission line is provided with a signal transmission line for connecting life The connector of the support system, wherein the signal transmission line is provided with a magnetic ring for suppressing the interference of the complex high-frequency signals in the complex environment in the field to the blood oxygen concentration information transmitted on the signal transmission line; the outer coating of the magnetic ring is used to prevent the magnetic ring High elastic rubber boots that break and move on the signal transmission lines.

The invention also includes an ultrasonic detector for measuring heart rate and pulse rate. The ultrasonic detector is connected to the system control module through a USB interface, and can transmit the detected heart rate and pulse rate signals to the system control module, and the system control module sends the detection signal to the system control module. Compare with the internal set value to judge the health status of the human body.

During use, before starting the infusion of the infusion device of the portable universal life support system, in order to ensure that the door structure for accommodating the position of the infusion device is in a reliable closed state, it is usually necessary to perform a state self-check on the closed door. In this regard, the present invention provides a door closing detection device, which not only simplifies the structural design, but also improves the reliability of the product and prolongs the service life of the product by adopting the non-contact detection method in which the permanent magnet and the Hall sensor cooperate.

The working principle of the present invention is as follows.

When the field battlefield is very critical, the medical staff lift the patient to the stretcher, fasten the main body of the life support system to the stretcher through the stretcher fixing device, and attach the infusion bag to the infusion device. The patient is given an infusion.

At the same time, the breathing air inlet module 22 and the breathing air outlet module of the breathing module 2 are connected to the breathing mask, and the breathing mask is set on the patient's mouth.

The operation of the turbine 35 and the oxygen mixing device 4 in the mechanical ventilation module 3 is controlled by the system control module 8 .

When the turbine 35 is working, the air in the environment is sucked into the module through the first filter 310 and the second filter 311 , and at the same time, the high pressure oxygen (O ₂ ) enters the module through the high pressure oxygen input port, and then passes through the fourth filter 315 After filtering, after the second pressure sensor 314 detects the air pressure, its flow rate is adjusted by the proportional valve 323 (cooperating with the second flow sensor 317 ), and then it is also sucked by the turbine 35 . The low-pressure oxygen (O ₂ ) is also sucked into the turbine 35 after entering the module through the low-pressure oxygen input port and the second one-way valve 312 . It should be noted that high pressure oxygen and low pressure oxygen are not ventilated.

The inhaled air and oxygen are mixed in the oxygen mixing device 4, the oxygen enters the oxygen delivery cavity 45 through the proportional valve, and then the oxygen enters the spiral oxygen pipeline 423, and is discharged from the oblique through holes of the spiral oxygen pipeline 423. into the outer sleeve 422 of the mixed oxygen heating rod. At the same time, through the action of the air pump, the air enters the air delivery cavity 46 from the air inlet 44, and then the air enters the spiral air duct 424, and is discharged from the oblique through hole of the spiral air duct 424 to the oxygen mixing heating rod. in the outer sleeve 422. Air and oxygen are collided through the inclined through holes on the pipe respectively, which improves the mixing efficiency and provides comfortable air.

In the process of air and oxygen delivery and mixing, the oxygen mixing heating rod 421 heats the air and oxygen, so that the mixed gas has a certain temperature, and the mixed gas is discharged from the outer sleeve 422 of the oxygen mixing heating rod to the oxygen mixing rod in cavity 49.

The turbine downstream of the mixed gas outlet will inhale and mix the oxygen in the mixing device and a part of the air entering the oxygen mixing device from the air inlet, and then send it to the downstream. The system control module calculates the current oxygen concentration by the system control module.

After the above-mentioned air and oxygen are inhaled, they are output to the downstream (with the first pressure sensor 913 or the first flow sensor 316 ) through the variable-speed operation of the turbine 35 in the form of the required pressure or flow rate, and finally pass through the first unit. Out of the output module after the valve 37.

The output gas enters the breathing module 2, and supplies gas to the patient through the breathing air inlet module 22, that is, the mixed gas enters the breathing mask through the air inlet body 221, and the patient can directly inhale oxygen.

The above is the working principle of the intake system. For the exhaust system, the gas exhaled by the patient is discharged from the breathing exhaust port module 23 to the mechanical ventilation module 3, and after entering the mechanical ventilation module 3, because the present invention is on the inhalation main pipe 36 A first one-way valve 37 is provided, so the gas exhaled by the patient cannot enter the inspiratory main pipe 36, but enters the expiratory main pipe 318, and the pressure and flow rate of the exhaled gas of the patient are controlled by the exhalation valve 320 (with The third flow sensor 921), and finally discharged out of the module through the third one-way valve 321.

When the patient inhales, the rotating speed of the turbine 35 increases, so that the mixed gas can be replenished to the patient very quickly; when the patient exhales, the rotating speed of the turbine 35 decreases, so that the exhaled gas can pass through the exhalation main pipe 318 discharge. When the exhalation valve 320 is blocked, because the rotational speed of the turbine 35 is very low, the gas exhaled by the patient can enter the inspiratory main pipe 36 through the air resistance passage 38, and then pass through the oxygen mixing device 4 and the air delivery pipeline 31 in turn, and then pass through the air The first filter 310 and the second filter 311 on the conveying pipeline 31 are filtered and discharged into the atmosphere.

Claims (9)

1. The utility model provides a portable general life support system is used in open-air emergent treatment which characterized in that: the life support system comprises a life support system host which is quickly positioned on a stretcher (76) through a stretcher fixing device (7), wherein the life support system host comprises a host shell and an infusion device which is arranged above the host shell and has a waterproof sealing function; the main frame is characterized in that a main frame main support (1) is fixedly arranged inside the main frame shell, a mechanical ventilation module (3) which is used for providing mixed oxygen for a patient and can avoid the condition that exhaled air of the patient cannot be discharged and a breathing module (2) which is connected with the mechanical ventilation module (3) and is used for carrying out breathing treatment on the patient and ensuring the patient to breathe independently are arranged inside the main frame main support (1), a power supply module (10) which is used for supplying power to the whole device is further arranged inside the main frame main support (1), a system control module (8) is arranged above the main frame main support (1), and the controlled end of the mechanical ventilation module (3) is connected to the output end of the system control module (8);

the infusion device comprises an infusion rod assembly (61) used for hanging an infusion bag, a waterproof silica gel assembly (62) used for preventing liquid in the infusion rod assembly (61) from flowing into the shell of the host machine, and an infusion rod fixing assembly (63) used for positioning the infusion rod assembly (61) and the waterproof silica gel assembly (62) on the shell of the host machine; the waterproof silica gel assembly (62) comprises a waterproof sleeve (62 b) which is embedded on the side part of the infusion rod fixing assembly (63) in a sealing mode and wraps the bottom end of the infusion rod assembly (61).

2. The portable universal life support system for field emergency treatment according to claim 1, wherein: the mechanical ventilation module (3) comprises an air inlet system for providing air source for a patient, an air outlet system for discharging air expired by the patient into the atmosphere and an air delivery manifold (322) communicated and arranged between the air inlet system and the air outlet system and communicated with the air inlet system, the air outlet system and the breathing module (2).

3. A portable universal life support system for field emergency treatment according to claim 2, wherein: the air intake system comprises an air delivery system for delivering air to the environment, a low pressure oxygen delivery system for delivering low pressure oxygen, and a high pressure oxygen delivery system for delivering high pressure oxygen, the air delivery system, the low-pressure oxygen delivery system and the high-pressure oxygen delivery system are connected with an oxygen mixing device (4) in an intersecting manner, the air outlet end of the oxygen mixing device (4) is connected with an air suction main pipe (36) for providing an air source for a patient, a turbine (35) for pumping mixed gas in the oxygen mixing device (4) is arranged on the air suction main pipe (36), a first one-way valve (37) for preventing the gas exhaled by the exhaust system from entering the oxygen mixing device (4) is also arranged on the air suction main pipe (36), an air resistance passage (38) which is connected in parallel with the first one-way valve (37) is connected and arranged on the air suction main pipe (36) between the air inlet end of the first one-way valve and the air outlet end of the first one-way valve;

the exhaust system comprises an expiration main pipe (318) communicated with an air delivery main pipe (322), and an expiration valve (320) used for controlling the pressure and the flow rate of the gas exhaled by the patient and a third one-way valve (321) used for preventing the outside gas from entering the expiration main pipe (318) are sequentially arranged on the expiration main pipe (318).

4. A portable universal life support system for field emergency treatment according to claim 3, wherein: inhale and be provided with respectively on being responsible for (36) and exhale the person in charge (318) and be used for detecting gaseous state gaseous detection module (9), the output of gaseous detection module (9) is connected in the input of system control module (8), and gaseous detection module (9) set up on being located main frame (1) of host computer below breathing module (2).

5. A portable universal life support system for field emergency treatment according to claim 3, wherein: the turbine (35) is a variable speed turbine which adjusts output gas flow and pressure parameters in a variable speed manner.

6. A portable universal life support system for field emergency treatment according to claim 3 or 5, wherein: the turbine (35) is arranged inside the main frame (1) of the main machine through a turbine fixing device;

the turbine fixing device comprises a turbine support arranged on the outer side of the turbine (35), a first through hole for enabling a motor, a wire and a terminal of the turbine (35) to penetrate through is formed in the bottom end of the turbine support, a second through hole communicated with an air inlet of the turbine (35) is formed in the top end of the turbine support, and a notch communicated with an air outlet of the turbine (35) is formed in the side portion of the turbine support; be provided with the first buffer assembly that is used for playing the cushioning effect between the casing bottom of inner wall bottom of turbine support and turbine (35), be provided with the second buffer assembly that is used for playing the cushioning effect between the casing top of the inner wall top of turbine support and turbine (35).

7. A portable universal life support system for field emergency treatment according to claim 3, wherein: the oxygen mixing device (4) comprises an oxygen mixing module main frame (41), an oxygen inlet (43), an air inlet (44) and a mixed gas outlet (410) are formed in the oxygen mixing module main frame (41), and valves are respectively arranged on the oxygen inlet (43) and the air inlet (44); the oxygen mixing module main frame (41) is internally provided with an oxygen mixing cavity (49) communicated with a mixed gas outlet (410), the oxygen mixing cavity (49) is internally communicated with a spiral oxygen mixing heating module (42) which is respectively communicated with an oxygen inlet (43) and an air inlet (44) and used for mixing and heating introduced oxygen and air in a spiral gas mixing mode, and the controlled end of the spiral oxygen mixing heating module (42) is connected to the output end of the system control module.

8. A portable universal life support system for field emergency treatment according to claim 2, wherein: the breathing module (2) is communicated with the gas transmission main pipe (322) through a breathing gas interface module (21); the breathing module (2) comprises a breathing air suction port module (22) and a breathing air exhaust port module (23) which are respectively communicated with the air transmission main pipe (322);

the breathing air suction port module (22) comprises an air suction port arranged on a main bracket of the main machine through a left fixed bracket (227), and the air suction port comprises an air suction port body (221); the right end of the air suction port body is an air inlet, and is arranged on a main bracket of the main machine through a right fixed bracket (2212) and communicated with an air inlet system of the mechanical ventilation module (3); the left end of the air suction port body (221) is an air outlet for supplying air to a patient, and the left end of the air suction port body (221) extends out of the left fixing support; an autonomous inspiration hole is further formed in the side wall of the inspiration port body, and an autonomous inspiration valve which enables an inspiration port at the left end of the inspiration port body to be communicated with the outside when a breathing module fails is assembled in the autonomous inspiration hole.

9. The portable universal life support system for field emergency treatment according to claim 1, wherein: the stretcher fixing device (7) comprises a stretcher supporting frame (77) contacted with the side surface of the stretcher (76) and a stretcher rotating baffle plate (71) matched with the stretcher supporting frame (77) to clamp the stretcher (76), wherein the stretcher rotating baffle plate (71) is arranged on the stretcher supporting frame (77) through a rotating component which is used for driving the stretcher rotating baffle plate (71) to rotate so as to realize the quick assembly and disassembly of the stretcher (76); the upper part of the stretcher supporting frame (77) is provided with a stretcher adapter plate (714) fixedly arranged on the host machine through a locking component in a connecting way.

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