CN115350042B - An auxiliary device for bone marrow puncture - Google Patents

Abstract

The invention discloses an auxiliary device for bone marrow puncture, which comprises a bearing plate and a supporting plate, wherein an arc-shaped groove is formed in the bearing plate and is in limit sliding connection with an arc-shaped plate for supporting the thigh of a patient through the arc-shaped groove, a first rotating rod is rotationally connected to the bearing plate and is fixedly connected with the arc-shaped plate, a chute is formed in the bearing plate and is in limit sliding connection with a sliding plate for supporting the shank of the patient through the chute, the sliding plate is hinged with the arc-shaped plate through a pin shaft, a hollow cavity is formed in the bearing plate, a feedback mechanism for determining the fat and thin degree of the patient is arranged on the bearing plate, and an adjusting mechanism for adaptively adjusting the arc-shaped plate and the sliding plate is arranged on the supporting plate. By arranging the feedback mechanism, the invention achieves the effect of determining the sliding stroke of the first arc-shaped piston rod and the first arc-shaped sealing plug in the first arc-shaped piston cylinder according to the size of the patient body when the straight piston cylinder slides to the patient.

Description

An auxiliary device for bone marrow puncture

technical field

The invention relates to the technical field of puncture auxiliary devices, in particular to an auxiliary device for bone marrow puncture.

Background technique

Bone marrow aspiration is a common diagnostic technique for taking bone marrow fluid, and its examination includes cytology, protozoa and bacteriology. Generally applicable to: 1. Diagnosis, differential diagnosis and treatment follow-up of various blood diseases; 2. Unexplained increase or decrease in the number of red blood cells, white blood cells, and platelets and morphological abnormalities; 3. Diagnosis and differential diagnosis of fever of unknown origin. For bone marrow culture, bone marrow smear to find parasites and so on.

At present, the posterior superior iliac spine is mostly used for bone marrow puncture, and the lateral position is taken during the puncture of the posterior superior iliac spine. Multiple punctures cause unnecessary harm to patients, so we need a kind of auxiliary device for bone marrow puncture to solve the above problems.

Contents of the invention

The purpose of the present invention is to provide an auxiliary device for bone marrow puncture, which has the advantage of being able to adjust the degree of flexion of the patient according to the size of the patient, and solves the problem of difficulty in puncturing for larger patients.

To achieve the above object, the present invention provides the following technical solution: an auxiliary device for bone marrow puncture includes a load-bearing plate and a support plate, and an arc-shaped groove is opened on the load-bearing plate and is connected with a The arc-shaped plate supporting the patient's thigh, the load-bearing plate is rotatably connected with a first rotating rod, the first rotating rod is fixedly connected with the arc-shaped plate, and a chute is opened on the load-bearing plate and passes through the chute The limit slide is connected with a sliding plate for supporting the patient's calf, the sliding plate is hinged with the arc plate through a pin shaft, a hollow cavity is opened on the bearing plate, and there is a set on the bearing plate for determining the fat of the patient. As for the feedback mechanism of thinness, the support plate is provided with an adjustment mechanism for adaptively adjusting the arc plate and the sliding plate.

Preferably, the feedback mechanism includes a support frame fixedly connected to the bearing plate, two support blocks are fixedly connected to the support frame, and two support blocks are rotatably connected to a rotating shaft, and the rotating shaft A hand crank and a gear are fixedly connected, and a chute is opened on the support frame, and a rack meshed with the gear is slidably connected through the chute.

Preferably, the feedback mechanism further includes a straight piston cylinder fixedly connected to the lower surface of the rack, a straight sealing plug is slidably connected to the inner wall of the straight piston cylinder, and a straight piston rod is fixedly connected to the straight sealing plug, A contact block in contact with the patient is fixedly connected to the straight piston rod, a first spring is placed inside the straight piston barrel, and two ends of the first spring are respectively fixedly connected with the straight sealing plug and the straight piston barrel.

Preferably, the feedback mechanism also includes an air intake pipe and an air delivery pipe, the straight piston barrel is fixedly communicated with the outside world through the air intake pipe, the end of the straight piston barrel away from the air intake pipe is fixedly communicated with the air delivery pipe, the air intake pipe and the air delivery pipe A one-way valve is fixedly connected to the gas delivery pipe.

Preferably, the adjustment mechanism includes a first arc-shaped piston barrel fixedly connected to the support plate, a first arc-shaped sealing plug is slidably connected to the inner wall of the first arc-shaped piston barrel, and the first arc-shaped sealing plug is A first arc-shaped piston rod is fixedly connected to the sealing plug, and the end of the first arc-shaped piston rod away from the first arc-shaped sealing plug is fixedly connected to the arc-shaped plate. One end of the piston barrel is fixedly connected.

Preferably, the adjustment mechanism further includes a second spring and a third spring, the second spring is sleeved on the first arc-shaped piston rod, and the two ends of the second spring are connected to the first arc-shaped sealing plug respectively. It is fixedly connected with the first arc-shaped piston barrel, and the first arc-shaped piston barrel is provided with an exhaust hole and is connected with a circular platform through the exhaust hole limit sliding, and the two ends of the third spring are respectively connected with the circular platform and the first The curved piston cylinder is fixedly connected.

Preferably, the straight piston cylinder is provided with a disinfection mechanism for sterilizing patients, and the disinfection mechanism also includes a connecting frame fixedly connected to the straight piston cylinder, the lower surface of the connecting frame is rotatably connected with a second rotating rod, the first bevel gear and disc are fixedly connected on the second rotating rod, the lower surface of the disc is disassembled and connected with a wiping body, and the first rotating rod is fixedly connected with the first bevel gear intermittently meshing second bevel gear.

Preferably, the load-bearing plate is provided with a fixing mechanism for fixing the lower leg of the patient, and the fixing mechanism includes a support plate fixedly connected to the load-bearing plate, and an air bag is fixedly connected to the support plate.

Preferably, the fixing mechanism also includes a second arc-shaped piston barrel, a delivery tube and a fourth spring, the second arc-shaped piston barrel is fixedly connected to the hollow cavity, and the inner wall of the second arc-shaped piston barrel A second arc-shaped sealing plug is slidably connected, and a second arc-shaped piston rod is fixedly connected to the second arc-shaped sealing plug. The end of the second arc-shaped piston rod away from the second arc-shaped sealing plug and the arc-shaped plate Fixedly connected, the second arc-shaped piston barrel is fixedly communicated with the air bag through the delivery tube, and the two ends of the fourth spring are respectively fixedly communicated with the second arc-shaped sealing plug and the second arc-shaped piston barrel.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The present invention achieves the effect of adjusting the patient's flexion degree according to the size of the patient's body shape through the cooperation of the overall structure.

2. The present invention achieves the sliding of the first arc-shaped piston rod and the first arc-shaped sealing plug in the first arc-shaped piston barrel according to the size of the patient when the straight piston barrel slides toward the patient by setting the feedback mechanism The effect of travel.

3. By setting the adjustment mechanism, the present invention can adaptively adjust the patient's flexion shape according to the patient's body shape, which reduces the difficulty of the doctor's puncture, and at the same time does not require the patient to keep the body flexed, so that the patient is more relaxed and reduces the need for the doctor to puncture. The effect of wearing poor effect.

4. The present invention achieves the effect of disinfecting the patient's posterior superior iliac spine with the wiping body by providing a disinfection mechanism without manual disinfection, saving time and effort.

5. The present invention fixes the lower leg of the patient by setting the fixing mechanism, avoiding the patient from shaking during the bone marrow puncture, thereby affecting the puncture effect.

Description of drawings

Fig. 1 is the appearance schematic diagram of overall structure of the present invention;

Fig. 2 is the structural representation of feedback mechanism of the present invention;

Fig. 3 is the structural sectional schematic diagram of feedback mechanism of the present invention;

Fig. 4 is a schematic structural view of the adjustment mechanism of the present invention when it is not adjusted;

Fig. 5 is a schematic structural view of the adjustment mechanism of the present invention when the adjustment is completed;

Fig. 6 is a structural sectional schematic view of the adjusting mechanism of the present invention;

Fig. 7 is a structural schematic diagram of an arc-shaped plate and a sliding plate of the present invention;

Fig. 8 is a schematic structural view of the disinfection mechanism of the present invention;

Fig. 9 is a schematic structural view of the fixing mechanism of the present invention;

Fig. 10 is a schematic cross-sectional view of the structure of the fixing mechanism of the present invention.

In the figure: 1, bearing plate; 11, arc-shaped plate; 12, sliding plate; 13, supporting frame; 14, supporting block; 15, first rotating rod; 16, supporting plate; 17, air bag; 2, rotating shaft; 21. Hand crank; 22. Gear; 23. Rack; 3. Straight piston cylinder; 31. Straight piston rod; 32. Straight sealing plug; 33. First spring; 34. Contact block; 35. Intake pipe; 36 , air pipe; 37, one-way valve; 4, the first arc-shaped piston cylinder; 41, the first arc-shaped piston rod; 42, the first arc-shaped sealing plug; 43, the second spring; 44, the round platform; 45, the first Three springs; 5, connecting frame; 51, the second rotating rod; 52, the first bevel gear; 53, disc; 54, the second bevel gear; 6, the second arc piston cylinder; 61, the second arc Shaped piston rod; 62, the second arc sealing plug; 63, the fourth spring; 64, delivery pipe.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

The present invention provides a technical solution: an auxiliary device for bone marrow puncture includes a load-bearing plate 1 and a support plate 16, and an arc-shaped groove is opened on the load-bearing plate 1, and a large plate for supporting the patient is connected through the arc-shaped groove to limit and slide. The arc-shaped plate 11 of the legs is connected with the first rotating rod 15 in rotation on the load-bearing plate 1, and the first rotating rod 15 is fixedly connected with the arc-shaped plate 11. The load-bearing plate 1 is provided with a chute and slides through the chute limit It is connected with a sliding plate 12 for supporting the lower legs of the patient. The sliding plate 12 is hinged to the arc plate 11 through a pin shaft. A hollow cavity is opened on the load-bearing plate 1. A feedback for determining the fatness of the patient is provided on the load-bearing plate 1. Mechanism, the supporting plate 16 is provided with an adjusting mechanism for adaptively adjusting the arc plate 11 and the sliding plate 12 .

When in use, place the device on the hospital bed and fix it, then the doctor installs a brand-new wiping body on the disc 53, and then the doctor instructs the patient to lie on his side and the patient's back to fit the baffle plate on the bearing plate 1 , and then the doctor shakes the hand crank 21 clockwise.

The feedback mechanism includes a support frame 13 fixedly connected to the load-bearing plate 1. The support frame 13 is fixedly connected with two support blocks 14. The two support blocks 14 are rotatably connected with a rotating shaft 2, and the rotating shaft 2 is fixedly connected with a hand. The crank 21 and the gear 22 are provided with a chute on the support frame 13, and a rack 23 meshing with the gear 22 is slidably connected through the chute.

The feedback mechanism also includes a straight piston barrel 3 fixedly connected to the lower surface of the rack 23, a straight sealing plug 32 is slidably connected to the inner wall of the straight piston barrel 3, and a straight piston rod 31 is fixedly connected to the straight sealing plug 32, and the straight piston rod 31 is fixedly connected with a contact block 34 that is in contact with the patient, and a first spring 33 is placed in the straight piston cylinder 3, and the two ends of the first spring 33 are fixedly connected with the straight sealing plug 32 and the straight piston cylinder 3 respectively.

The feedback mechanism also includes an air intake pipe 35 and an air delivery pipe 36. The straight piston cylinder 3 is fixedly communicated with the outside world through the air intake pipe 35, and the end of the straight piston cylinder 3 away from the air intake pipe 35 is fixedly connected with the air delivery pipe 36. A one-way valve 37 is fixedly connected to the top.

Then the rotating shaft 2 rotates clockwise, and the gear 22 on it rotates clockwise synchronously. Since the gear 22 meshes with the rack 23, the rack 23 slides downward, so that the straight piston barrel 3 on it slides downward synchronously until The contact block 34 is in contact with the patient, so that the contact block 34 drives the straight piston rod 31 and the straight sealing plug 32 to slide towards the direction of the intake pipe 35. When the rotating shaft 2 rotates counterclockwise, the same principle as above, the rack 23 drives the straight The straight piston barrel 3 slides upwards, so that the elastic force of the first spring 33 is released, so that the straight piston rod 31 and the straight sealing plug 32 slide away from the air intake pipe 35, thereby causing the air pressure in the straight piston barrel 3 to change back and forth, The details are as follows:

In the above, when the straight piston rod 31 and the straight sealing plug 32 slide in the direction away from the intake pipe 35 in the straight piston cylinder 3, under the cooperation of the one-way valve 37, a negative pressure is generated, thereby sucking the air from the outside through the intake pipe 35 In the straight piston barrel 3, when the straight piston rod 31 and the straight sealing plug 32 slide toward the intake pipe 35 in the straight piston barrel 3, under the cooperation of the check valve 37, a high pressure is generated, so that the gas in the straight piston barrel 3 It is sent into the first arc-shaped piston barrel 4 through the air delivery pipe 36 .

And then the patient's build is bigger, the gas that passes into the first arc-shaped piston cylinder 4 is more, so that the sliding of the first arc-shaped piston rod 41 and the first arc-shaped sealing plug 42 in the first arc-shaped piston cylinder 4 The stroke increases, and the larger the size of the patient, the less gas that passes into the first arc-shaped piston barrel 4, so that the first arc-shaped piston rod 41 and the first arc-shaped sealing plug 42 in the first arc-shaped piston barrel 4 The sliding stroke is reduced, so that when the straight piston cylinder 3 slides toward the patient, the size of the patient's body size determines the distance between the first arc-shaped piston rod 41 and the first arc-shaped sealing plug 42 in the first arc-shaped piston cylinder 4. The effect of sliding strokes.

The adjustment mechanism includes a first arc-shaped piston barrel 4 fixedly connected to the support plate 16, a first arc-shaped sealing plug 42 is slidably connected to the inner wall of the first arc-shaped piston barrel 4, and the first arc-shaped sealing plug 42 is fixed Connected with a first arc-shaped piston rod 41, the end of the first arc-shaped piston rod 41 away from the first arc-shaped sealing plug 42 is fixedly connected with the arc-shaped plate 11, and the first arc-shaped piston barrel 4 and the gas delivery pipe 36 are far away from the straight piston barrel One end of 3 is fixedly connected.

The adjustment mechanism also includes a second spring 43 and a third spring 45, the second spring 43 is sleeved on the first arc-shaped piston rod 41, and the two ends of the second spring 43 are respectively connected to the first arc-shaped sealing plug 42 and the first The arc-shaped piston barrel 4 is fixedly connected, and the first arc-shaped piston barrel 4 is provided with an exhaust hole and is connected with a circular platform 44 through the limit sliding of the exhaust hole. The two ends of the third spring 45 are respectively connected to the circular platform 44 and the first arc-shaped Piston barrel 4 is fixedly connected.

When the size of the patient is larger, the sliding stroke of the first arc piston rod 41 and the first arc sealing plug 42 in the first arc piston cylinder 4 is larger, referring to Fig. The rotating stroke of the rotating rod 15 becomes larger as the center of the circle, so that the patient's thigh rotates synchronously with the arc-shaped plate 11, and the calf is located on the sliding plate 12, so that the patient is in a flexed shape, and because the patient is larger in size, the local fatty tissue More, it is difficult to puncture, so that the larger the patient is, the more flexed it is, making it easier for the doctor to puncture.

When the body size of the patient is small, the same principle as above, the smaller the body size of the patient, the smaller the degree of flexion.

By setting the adjustment mechanism, the patient's flexion shape can be adaptively adjusted according to the patient's body shape, which reduces the difficulty of the doctor's piercing, and at the same time does not require the patient to keep the body flexed, making the patient more relaxed and reducing the doctor's poor piercing effect. Effect.

Embodiment two

On the basis of Embodiment 1, furthermore, the straight piston cylinder 3 is provided with a disinfection mechanism for sterilizing the patient, and the disinfection mechanism also includes a connecting frame 5 fixedly connected to the straight piston cylinder 3, and the connecting frame 5 The lower surface is rotatably connected with a second rotating rod 51, the second rotating rod 51 is fixedly connected with a first bevel gear 52 and a disc 53, the lower surface of the disc 53 is disassembled and connected with a wiping body, and the first rotating rod 15 is fixed A second bevel gear 54 intermittently meshing with the first bevel gear 52 is connected.

When the straight piston barrel 3 slides downward, the connecting frame 5 on it slides downward synchronously until the first bevel gear 52 meshes with the second bevel gear 54, and because the second bevel gear 54 rotates, the first bevel gear The bevel gear 52 drives the second rotating rod 51 to rotate synchronously, so that the disc 53 rotates synchronously, thereby achieving the effect that the wiping body can disinfect the patient's posterior superior iliac spine without manual disinfection, saving time and effort.

The wiping body can be selected from medical cotton and sponges absorbed with disinfectant. When in use, the appropriate wiping body can be selected according to the actual use situation.

Embodiment Three

On the basis of Embodiment 2, furthermore, the load-bearing plate 1 is provided with a fixing mechanism for fixing the lower leg of the patient. The fixing mechanism includes a support plate 16 fixedly connected to the load-bearing plate 1. The support plate 16 An air bag 17 is fixedly connected to it.

The fixing mechanism also includes a second arc-shaped piston cylinder 6, a delivery pipe 64 and a fourth spring 63. The second arc-shaped piston cylinder 6 is fixedly connected to the hollow cavity, and the inner wall of the second arc-shaped piston cylinder 6 is slidably connected with a second spring. Two arc-shaped sealing plugs 62, the second arc-shaped sealing plug 62 is fixedly connected with a second arc-shaped piston rod 61, and the end of the second arc-shaped piston rod 61 away from the second arc-shaped sealing plug 62 is fixedly connected with the arc-shaped plate 11 , the second arc-shaped piston cylinder 6 is fixedly communicated with the air bag 17 through the delivery tube 64, and the two ends of the fourth spring 63 are fixedly communicated with the second arc-shaped sealing plug 62 and the second arc-shaped piston cylinder 6 respectively.

When the arc-shaped plate 11 rotates with the first rotating rod 15, the second arc-shaped piston rod 61 fixedly connected with it drives the second arc-shaped sealing plug 62 to slide along the second arc-shaped piston cylinder 6 to one end of the delivery pipe 64, so that The gas in the second arc-shaped piston cylinder 6 is transported into the air bag 17 through the delivery tube 64, and the patient's calf is fixed by the cooperation of the air bag 17 and the sliding plate 12, which prevents the patient from shaking when the bone marrow is punctured, thereby Affects the piercing effect.

Then the doctor shakes the hand crank 21 counterclockwise, so that the feedback mechanism and the disinfection mechanism slide upward until reset.

The doctor then performed local anesthesia on the patient's posterior superior iliac spine. After confirming the anesthesia, the needle was inserted, aspiration was performed, and then pressure and hemostasis were performed. The puncture site was subsequently disinfected and bandaged.

Then the doctor manually pushes the round table 44, so that the round table 44 does not cooperate with the exhaust hole, so that the gas in the first arc-shaped piston cylinder 4 is discharged through the exhaust hole, and at this time, the elastic force of the second spring 43 is released, so that the first arc-shaped The piston rod 41 and the first arc-shaped sealing plug 42 slide toward the direction of the gas delivery pipe 36, so that the arc-shaped plate 11 and the sliding plate 12 are reset synchronously.

When the arc-shaped plate 11 is reset and through the cooperation of the fourth spring 63, the second arc-shaped piston rod 61 and the second arc-shaped sealing plug 62 slide in the direction of the delivery tube 64, so that the gas in the airbag 17 passes through the delivery tube 64 back to into the second arc-shaped piston barrel 6, so that the airbag 17 is reset.

Through the reset of the airbag 17 and the slide plate 12, the fixation of the patient is released, and then the patient can leave the device.

Working principle: This auxiliary device for bone marrow puncture, when in use, place the device on the hospital bed and fix it, then the doctor installs a brand-new wiping body on the disc 53, and then the doctor instructs the patient to lie on his side And the back of the patient fits the baffle plate on the load-bearing board 1, then the doctor shakes the hand crank 21 clockwise.

Then the rotating shaft 2 rotates clockwise, and the gear 22 on it rotates clockwise synchronously. Since the gear 22 meshes with the rack 23, the rack 23 slides downward, so that the straight piston barrel 3 on it slides downward synchronously until The contact block 34 is in contact with the patient, so that the contact block 34 drives the straight piston rod 31 and the straight sealing plug 32 to slide towards the direction of the intake pipe 35. When the rotating shaft 2 rotates counterclockwise, the same principle as above, the rack 23 drives the straight The straight piston barrel 3 slides upwards, so that the elastic force of the first spring 33 is released, so that the straight piston rod 31 and the straight sealing plug 32 slide away from the air intake pipe 35, thereby causing the air pressure in the straight piston barrel 3 to change back and forth, The details are as follows:

In the above, when the straight piston rod 31 and the straight sealing plug 32 slide in the direction away from the intake pipe 35 in the straight piston cylinder 3, under the cooperation of the one-way valve 37, a negative pressure is generated, thereby sucking the air from the outside through the intake pipe 35 In the straight piston barrel 3, when the straight piston rod 31 and the straight sealing plug 32 slide toward the intake pipe 35 in the straight piston barrel 3, under the cooperation of the check valve 37, a high pressure is generated, so that the gas in the straight piston barrel 3 It is sent into the first arc-shaped piston barrel 4 through the air delivery pipe 36 .

And then the patient's build is bigger, the gas that passes into the first arc-shaped piston cylinder 4 is more, so that the sliding of the first arc-shaped piston rod 41 and the first arc-shaped sealing plug 42 in the first arc-shaped piston cylinder 4 The stroke increases, and the larger the size of the patient, the less gas that passes into the first arc-shaped piston barrel 4, so that the first arc-shaped piston rod 41 and the first arc-shaped sealing plug 42 in the first arc-shaped piston barrel 4 The sliding stroke is reduced, so that when the straight piston cylinder 3 slides toward the patient, the size of the patient's body size determines the distance between the first arc-shaped piston rod 41 and the first arc-shaped sealing plug 42 in the first arc-shaped piston cylinder 4. The effect of sliding strokes.

When the size of the patient is larger, the sliding stroke of the first arc piston rod 41 and the first arc sealing plug 42 in the first arc piston cylinder 4 is larger, referring to Fig. The rotating stroke of the rotating rod 15 becomes larger as the center of the circle, so that the patient's thigh rotates synchronously with the arc-shaped plate 11, and the calf is located on the sliding plate 12, so that the patient is in a flexed shape, and because the patient is larger in size, the local fatty tissue More, it is difficult to puncture, so that the larger the patient is, the more flexed it is, making it easier for the doctor to puncture.

When the body size of the patient is small, the same principle as above, the smaller the body size of the patient, the smaller the degree of flexion.

By setting the adjustment mechanism, the patient's flexion shape can be adaptively adjusted according to the patient's body shape, which reduces the difficulty of the doctor's piercing, and at the same time does not require the patient to keep the body flexed, making the patient more relaxed and reducing the doctor's poor piercing effect. Effect.

When the straight piston barrel 3 slides downward, the connecting frame 5 on it slides downward synchronously until the first bevel gear 52 meshes with the second bevel gear 54, and because the second bevel gear 54 rotates, the first bevel gear The bevel gear 52 drives the second rotating rod 51 to rotate synchronously, so that the disc 53 rotates synchronously, thereby achieving the effect that the wiping body can disinfect the patient's posterior superior iliac spine without manual disinfection, saving time and effort.

The wiping body can be selected from medical cotton and sponges absorbed with disinfectant. When in use, the appropriate wiping body can be selected according to the actual use situation.

When the arc-shaped plate 11 rotates with the first rotating rod 15, the second arc-shaped piston rod 61 fixedly connected with it drives the second arc-shaped sealing plug 62 to slide along the second arc-shaped piston cylinder 6 to one end of the delivery pipe 64, so that The gas in the second arc-shaped piston cylinder 6 is transported into the air bag 17 through the delivery tube 64, and the patient's calf is fixed by the cooperation of the air bag 17 and the sliding plate 12, which prevents the patient from shaking when the bone marrow is punctured, thereby Affects the piercing effect.

Then the doctor shakes the hand crank 21 counterclockwise, so that the feedback mechanism and the disinfection mechanism slide upward until reset.

The doctor then performed local anesthesia on the patient's posterior superior iliac spine. After confirming the anesthesia, the needle was inserted, aspiration was performed, and then pressure and hemostasis were performed. The puncture site was subsequently disinfected and bandaged.

Then the doctor manually pushes the round table 44, so that the round table 44 does not cooperate with the exhaust hole, so that the gas in the first arc-shaped piston cylinder 4 is discharged through the exhaust hole, and at this time, the elastic force of the second spring 43 is released, so that the first arc-shaped The piston rod 41 and the first arc-shaped sealing plug 42 slide toward the direction of the gas delivery pipe 36, so that the arc-shaped plate 11 and the sliding plate 12 are reset synchronously.

When the arc-shaped plate 11 is reset and through the cooperation of the fourth spring 63, the second arc-shaped piston rod 61 and the second arc-shaped sealing plug 62 slide in the direction of the delivery tube 64, so that the gas in the airbag 17 passes through the delivery tube 64 back to into the second arc-shaped piston barrel 6, so that the airbag 17 is reset.

Through the reset of the airbag 17 and the slide plate 12, the fixation of the patient is released, and then the patient can leave the device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. An auxiliary device for bone marrow puncture, comprising a bearing plate (1) and a supporting plate (16), characterized in that: an arc-shaped groove is formed in the bearing plate (1) and is in limit sliding connection with an arc-shaped plate (11) for supporting the thigh of a patient through the arc-shaped groove, a first rotating rod (15) is rotationally connected to the bearing plate (1), the first rotating rod (15) is fixedly connected with the arc-shaped plate (11), a chute is formed in the bearing plate (1) and is in limit sliding connection with a sliding plate (12) for supporting the shank of the patient through the chute, the sliding plate (12) is hinged with the arc-shaped plate (11) through a pin shaft, a hollow cavity is formed in the bearing plate (1), a feedback mechanism for determining the fat-thin degree of the patient is arranged on the bearing plate (1), and an adjusting mechanism for adaptively adjusting the arc-shaped plate (11) and the sliding plate (12) is arranged on the supporting plate (16);

the feedback mechanism comprises a support frame (13) fixedly connected to the bearing plate (1), two support blocks (14) are fixedly connected to the support frame (13), a rotating shaft (2) is rotatably connected to the two support blocks (14), a hand crank (21) and a gear (22) are fixedly connected to the rotating shaft (2), a sliding groove is formed in the support frame (13), and a rack (23) meshed with the gear (22) is in limiting sliding connection with the sliding groove;

the feedback mechanism further comprises a straight piston cylinder (3) fixedly connected to the lower surface of the rack (23), a straight sealing plug (32) is slidably connected to the inner wall of the straight piston cylinder (3), a straight piston rod (31) is fixedly connected to the straight sealing plug (32), a contact block (34) in contact with a patient is fixedly connected to the straight piston rod (31), a first spring (33) is placed in the straight piston cylinder (3), and two ends of the first spring (33) are fixedly connected with the straight sealing plug (32) and the straight piston cylinder (3) respectively;

the feedback mechanism further comprises an air inlet pipe (35) and an air delivery pipe (36), the straight piston cylinder (3) is fixedly communicated with the outside through the air inlet pipe (35), one end, far away from the air inlet pipe (35), of the straight piston cylinder (3) is fixedly communicated with the air delivery pipe (36), and the air inlet pipe (35) and the air delivery pipe (36) are fixedly connected with a one-way valve (37);

the adjusting mechanism comprises a first arc-shaped piston cylinder (4) fixedly connected to the supporting plate (16), a first arc-shaped sealing plug (42) is slidably connected to the inner wall of the first arc-shaped piston cylinder (4), a first arc-shaped piston rod (41) is fixedly connected to the first arc-shaped sealing plug (42), one end, far away from the first arc-shaped sealing plug (42), of the first arc-shaped piston rod (41) is fixedly connected with the arc-shaped plate (11), and one end, far away from the straight piston cylinder (3), of the first arc-shaped piston cylinder (4) is fixedly communicated with the gas pipe (36);

the adjusting mechanism further comprises a second spring (43) and a third spring (45), the second spring (43) is sleeved on the first arc-shaped piston rod (41), two ends of the second spring (43) are fixedly connected with the first arc-shaped sealing plug (42) and the first arc-shaped piston cylinder (4) respectively, the first arc-shaped piston cylinder (4) is provided with an exhaust hole and is provided with a round table (44) through the limit sliding connection of the exhaust hole, and two ends of the third spring (45) are fixedly connected with the round table (44) and the first arc-shaped piston cylinder (4) respectively.

2. An auxiliary device for bone marrow aspiration according to claim 1, wherein: the straight piston cylinder (3) is provided with a disinfection mechanism for disinfecting a patient, and the disinfection mechanism also comprises a connecting frame (5) fixedly connected to the straight piston cylinder (3).

3. An auxiliary device for bone marrow aspiration according to claim 2, wherein: the lower surface of the connecting frame (5) is rotatably connected with a second rotating rod (51), and a first bevel gear (52) and a disc (53) are fixedly connected to the second rotating rod (51).

4. An auxiliary device for bone marrow aspiration according to claim 3, wherein: the lower surface of the disc (53) is detachably connected with a wiping body, and the first rotating rod (15) is fixedly connected with a second bevel gear (54) which is intermittently meshed with the first bevel gear (52).

5. An auxiliary device for bone marrow aspiration according to claim 1, wherein: be equipped with the fixed establishment who is used for fixing patient's shank on bearing plate (1), fixed establishment is including backup pad (16) of fixed connection on bearing plate (1), fixedly connected with gasbag (17) on backup pad (16), fixed establishment is still including second arc piston tube (6), conveyer pipe (64) and fourth spring (63), second arc piston tube (6) fixed connection is on hollow chamber, sliding connection has second arc sealing plug (62) on the inner wall of second arc piston tube (6), fixedly connected with second arc piston rod (61) on second arc sealing plug (62), the one end and arc (11) fixed connection of second arc sealing plug (62) are kept away from to second arc piston rod (61).

6. An auxiliary device for bone marrow aspiration according to claim 5, wherein: the second arc-shaped piston cylinder (6) is fixedly communicated with the air bag (17) through a conveying pipe (64), and two ends of the fourth spring (63) are fixedly communicated with the second arc-shaped sealing plug (62) and the second arc-shaped piston cylinder (6) respectively.