FI100699B - emptying device - Google Patents

Description

100699

drain device

The present invention relates to a drainage device according to the preamble of claim 1, in particular for draining fluids in the body.

For many years, a drainage system known as a "three-bottle unit" with a collection bottle, a water-lock bottle, and a suction control bottle has been used as a general device for emptying the pleural cavity. The catheter comes from the patient's pleural cavity into the collection vial and the suction vial is connected to the tube to the suction source. The three bottles are connected in series with different tubes to apply suction to the lung-15 cavity cavity and to drain fluid and air therefrom and then remove them to the Collection Bottle. The gases entering the collecting bottle bubble through the water in the water trap bottle. The water in the water trap also usually prevents air from flowing back into the chest cavity.

Suction pressure is generally provided by central hospital suction devices, which can remove fluids such as blood, water, and air from the patient's pleural cavity by creating a certain pressure difference between the suction source and the pressure in the patient. Such suction pressure and pressure difference must be carefully maintained, as dangerous situations can arise if the pressure differences are too large or too small. However, the operation of the hospital's suction equipment may vary from time to time, which impairs suction performance.

Drainage systems with a pressure gauge filled with water in the suction control chamber, the water surface of which indicates the pressure of the liquid, are also cumbersome because water must be added to them before use and also because of their size and weight. In addition, evaporation in the suction control chamber causes variations in suction pressure that must be compensated for by the addition of more water, increasing the time required to service and monitor such 2 100699 drainage systems. In addition, the bottles are usually on a support surface, such as a table or floor, which can cause them to fall over and damage the tubes.

The three-bottle unit has also experienced various functional disadvantages due to its many different components and the large number of connections (usually 16 or 17), such as the air gap that can be caused by the water trap bottle losing its function if the suction is interrupted. temporarily and possibly intermediate carriage transfer. One serious drawback of the three-bottle unit is the possibility of making an incorrect connection and the system requiring this assembly time to control its operation.

The popularity of the three-bottle unit declined with the launch of an underwater liquid lock drain system marketed by Deknatel Inc1 in 1966 under the trademark "Pleur-evadB". U.S. Patent Nos. 3,336,626, 3,363,627, 3,559,647, 3,683,913, 3,782,497, 4,258,824 and Re. 29 877 concern various aspects

In the Pleur-evacR system, which has achieved improvements over the years that have eliminated various disadvantages associated with the three-bottle unit. These improvements have also included the elimination of variations in three-bottle units between different manufacturers, hospitals and hospital laboratories. Such variations include bottle size, tube length and diameter, water trap material, and the like.

A more detailed description of the need for and their respective use of thoracic emptying devices is provided in the Pleur-evacR publication of Deknatel lnc entitled "Physiology of the Chest and Thoracic Catheters; Chest Drainage Systems No. 1 of a series from Deknatel" (1985).

3,100699

Among the features of the Pleur-evacR system that have been able to improve its performance is the use of the three-bottle technology in one preformed, encapsulated unit. The desired suction values are generally obtained by means of the water levels in the suction control bottle and the water trap bottle. These water levels are formed according to specified values before the system is applied to the patient. The unit includes a special vacuum valve that is used when the pressure in the patient becomes so low that it can cause the water trap function to stop. In addition, the overpressure control valve in the large stem of the water trap chamber prevents the formation of a tension air line when the pressure in the large stem of the water trap exceeds a preset value due to a suction failure or accidental compression or blockage of the suction pipe. The Pleur-evacR system is a single-use product and prevents cross-infection.

Although the Pleur-evacR system has certain advantages over the three-bottle unit and is generally accepted for medical use, there is still a continuing need to improve the comfort and performance of thoracic emptying systems and to make such systems compact. As mentioned above, fluid-filled suction control chambers require manometer tubes to be filled to levels prescribed by a physician before being connected to a patient and hospital suction system. Although it is also possible that the filling is carried out in connection with the manufacture of the devices before they are delivered, this is not desirable in practice, since this requires several adjustments according to the different values of the patient's suction function prescribed by the doctor concerned. In addition, fluid in various pipes can damage the system during its delivery due to low ambient temperatures and leaks. In addition, the suction levels obtained with the thoracic emptying system are somewhat limited depending on the size of the manometer tubes required to maintain them. Due to the size of the manometers required for high suction levels, the drain system 5 is in some cases impractical. The benefits of reducing the size of the system include its ease of use, easy storage, lower transportation costs, and ease of interaction between the patient and his or her guests and caregivers. In addition, the accuracy of the 10 existing underwater drainage systems is limited due to the need to continuously monitor the various manometers by monitoring the fluid level in the relevant chambers.

Even when measuring instruments are used, they must also be constantly monitored. When the liquid in the manometers is converted to steam, suction variations occur which require the addition of water to compensate for the reduced amount of water.

All such activities naturally take a considerable amount of time.

The Pleur-evacR is equipped with hanging hooks that can be used to support it, for example, in a patient's bed. However, the hooks come off the device easily, so the Pleur-evacR can move out of the support if, for example, the device is accidentally pushed.

As already mentioned, despite the fact that the Pleur-25 evacR system has certain advantages over the three-bottle unit and is generally accepted in medicine, there is a continuing need to improve the comfort and performance of thoracic emptying systems and to make such systems more compact. .

U.S. Patent No. 3,683,913 discloses a device for draining body fluids. The device comprises a coil chamber, a suction control chamber and a closure chamber with two statues attached to each other at the lower end. The upper end of the second 5,100,699 statue is connected to the collection chamber through a cylindrical shut-off valve and an enlarged container 35.

U.S. Patent 4,469,484 discloses a surgical drainage device for draining fluids from the body. The Lai-5 te comprises a collection chamber, an underwater closure chamber and a suction control chamber. The underwater closure chamber is provided with a small arm and a large arm 24. The small arm is separated from the collection chamber by a partition wall, except for the point where a channel is formed in the vicinity of the upper part 10 of the partition wall. A one-way pop-up valve 34 is located on the small arm to prevent liquid from entering the collection chamber through the channel.

The present invention relates to an apparatus for draining fluids in a body, the apparatus comprising: a collection chamber for collecting fluids from a cavity in the body, said collection chamber comprising an inlet in fluid communication with the body cavity; a suction control chamber for adjusting the vacuum of the collection chamber; and a closure chamber that prevents ambient air from entering the collection chamber, and the device further comprises: a large arm compartment having an inlet at one end, a small arm compartment having an opening at one end communicating with the collection chamber and one end communicating with the other end of the large arm; at the second end 25 of the small arm compartment there is a first chamber which prevents the ambient air from entering the collecting chamber when the collecting chamber has a relatively high vacuum. The device is further characterized in that it further comprises a second chamber arranged to separate the first chamber from the opening leading to the collection chamber so that any sealing medium coming from the first container chamber enters the second chamber and then returns to the first chamber and does not pass through the opening.

The device is preferably used in conjunction with a fluid removal device, such device comprising: a collection chamber for collecting fluids from a cavity in the body 6 100699, the collection cannon comprising a fluid inlet; a suction control chamber in fluid communication with the collection cone for controlling the vacuum degree of the collection cone and comprising a first inlet for connection to the suction source; a second tu-5 inlet in communication with the ambient air. Such a device is characterized in that it comprises a water-free meterless device for adjusting the suction degree of the collecting cone to one of several preselected suction levels so that the adjustment is substantially independent of pressure.

The suction control device comprises a portion having an orifice disposed in the suction control device and dividing it into a first portion at the air vent and a remaining second portion at the suction port and in fluid communication with the collection chamber, further a valve device sized and shaped to close the orifice and further means for closing the valve device when the suction of the collecting canister is at a predetermined suction level and otherwise opening the valve device so that ambient air can flow to the second part and then return the suction of the collecting canister to a predetermined level.

The valve closing device preferably comprises a tension spring connected at one end to the valve device and at the other end to a support part in the first part of the suction control device, so that the valve device can be held relative to the opening according to a predetermined suction level.

In addition, a device is provided for adjusting the tension of the spring in predetermined different steps, whereby one predetermined suction level is always obtained. The adjusting device preferably comprises a helical rack arranged at least in one part of the support part, a rotatably supported drive wheel operatively associated therewith, a drive plate-connected setting plate having a plurality of preset 35 grooves, a retaining part resiliently positioned against the shape of the setting plate, and shaped and dimensioned. that it goes into one of the grooves of the setting plate and whereby as the setting plate rotates the retaining part moves along the circumference of the plate and then goes into the next groove in it.

5 The device further comprises a device for changing the tension of the spring when the retaining part is in one of the presetting grooves of the setting plate, so that the tension of the spring can be changed as desired without rotating the setting plate. In a preferred construction, the spring tension adjusting device comprises a collar rotating in the wall portion of the suction control chamber, the other end of the support member being fixed to the collar so as to rotate therewith, so that as the collar rotates with the support member, the spring tension can be changed as desired. At least one portion 15 of the setting plate extends out of the air vent so that the setting plate can be rotated from outside the suction control chamber. The setting plate has a scale indicating the suction pressure of the collecting chamber with the retaining part in one of the grooves.

The valve device is preferably a flat plate with a round bead on one side 20 which rests on the release part and around the opening, so that a separate point of contact between the bead and the release plate is obtained in cross section. The area of the opening is also larger than the smallest cross-sectional area of each channel in each chamber.

The device further comprises a damping device connected to the valve device, which dampens the rapid movement of the valve device when the opening opens and closes when the suction deviates from a predetermined suction level. The damping device comprises a damper connected to the valve device. In addition, a spring 30 is arranged in said first part at the air opening, while the valve device and the damper are in the second part.

In a preferred construction, the detector device comprises a float positioned in a defined area of the second portion 35 of the suction chamber having a visible portion and the float shaped and dimensioned to move to the visible portion of the defined area when the collection chamber has a predetermined suction level. the relevant suction function can be detected immediately. The restricted area is between two stop-5 noses that restrict the movement of the float in the restricted area. The float is preferably colored so that it differs from its surroundings and is easily visible. The float can also be self-illuminating, so that the relevant suction function can also be seen at dusk and at night.

In an alternative construction, the detector device comprises a visible bubbling zone which holds a certain amount of liquid in the second part of the suction control chamber so that when the device is in use air passing through the bubbling zone bubbles through the suction opening and indicates both visibly and audibly the relevant suction chamber. The bubbling zone comprises a channel bypassing the fluid retention zone. The duct is dimensioned and shaped so that air does not bubble through the liquid in the bubbling zone until the suction formed in the collection chamber exceeds a predetermined suction level.

In another alternative construction, the body fluid draining device comprises a shut-off chamber that prevents air from entering the collection chamber.

The present invention is also intended to be used in conjunction with a device for adjusting the vacuum level of a drainage system and comprising a housing defining a chamber in fluid communication with the drainage system, a first inlet in the housing connected to a suction source, and a second inlet in the housing. to the ambient air, an anhydrous device which adjusts the suction level at a plurality of predetermined suction levels, the control device being arranged between the suction opening and the air opening and the detecting device arranged between the control device and the suction opening immediately detecting the respective suction function. The suction control device comprises a wall part with an opening 9 100699 located in the chamber and divided into a first part at the air opening and a remaining second part at the suction opening and in fluid communication with the drainage system, in addition to a valve device dimensioned and shaped so as to that it closes the orifice and the device that tensions the valve device so that it closes the orifice when the suction of the drain system is at a predetermined suction level and otherwise keeps the valve device open so that air can flow to the other part and return the suction in the drain system to a predetermined level.

In a particular embodiment, the present invention also relates to a device for removing body fluids having a collection chamber for collecting fluids from a body cavity, the collection chamber then comprising a fluid inlet to the body cavity, a suction control chamber comprises a large stem compartment having a suction opening at one end and a small stem compartment having an opening at one end connected to the collection chamber and one end communicating with one end of the large stem, the other end of the small stem compartment comprising a device preventing air from entering the collection chamber when there is relatively high vacuum. The air barrier device comprises a first chamber formed at the opening and dimensioned and shaped to accommodate all the predetermined sealing fluid present in the sealing chamber at the junction of the large and small arm compartments. The apparatus further comprises a second chamber arranged to separate the first liquid chamber from the opening to the collection chamber so that the barrier liquid coming from the first liquid chamber enters said second separation chamber and then returns to the liquid chamber and thus does not pass through the opening. The liquid chamber 35 is shaped so that the barrier liquid entering it enters a direction deviating from the direction of normal flow, whereby the liquid entering the chamber circulates there and accumulates there.

The device further comprises a wall portion disposed in the small stem compartment and separating the small stem of the fluid chamber from the rest of the stem, and comprises an orifice and valve device sized and shaped to open and close the orifice and normally open and close the orifice when when fluid enters the fluid chamber from the junction of the large and small 10 stem compartments. The valve device comprises a ball sized to fit the opening and close it. The orifice has a notch through which the barrier fluid enters the fluid chamber when the ball valve is on the orifice and closes it, whereby the direction of the barrier fluid in the chamber becomes generally transverse to the direction of normal flow. The rest of the small stem is tapered so that the ball valve moves between the tapered portion and the orifice. This part of the small arm is smaller in cross section than the liquid chamber. In a preferred construction, the air baffle comprises 20 single-way shut-off valves located in a small arm compartment.

When the valve is open, the suction flow enters the suction opening from the collection chamber, but when the valve is closed, it prevents air from entering the collection chamber. The single-way shut-off valve is located at the opening 25 between the small arm compartment and the collection chamber.

Preferably, the device has an air flow meter located at the junction between the other end of the small arm and the other ends of the large arm. An air flow meter measures the amount of gas leaving the body cavity. The device also has a shut-off valve device in the large 30 arm compartments. The shut-off valve device is normally closed and opens to allow air to enter the shut-off chamber when the pressure in the shut-off chamber increases significantly. The device also provides a discharge device for removing fluids from a body cavity or part thereof and comprises a housing for collecting fluids 11 100699 formed in the housing with a liquid inlet and for fluid communication with the body cavity or part thereof, a barrier chamber for preventing air from entering the housing and comprising a large arm compartment having an inlet to be connected to a suction source at one end, a small arm compartment having an opening at one end communicating with the collection chamber and one end of the arm connected to the other end of the large arm, the small arm compartment also comprising a device at its other end to the collection chamber when the collection chamber has a relatively high vacuum, the emptying device further comprising a suction control chamber formed in the housing and in fluid communication with the collection chamber in the collection chamber and the pleural effusion. and a second inlet connected to the ambient air, a second inlet in communication with the ambient air, the anhydrous device for adjusting the suction rate of the collecting chamber at a plurality of predetermined presetting suction levels a detection device located between the control device and the first inlet and immediately indicating the relevant suction function of the collecting chamber.

The housing preferably consists of a front wall part and a ta-25 wall part connected to each other at its circumferential edges by several side wall parts. The front wall part comprises a handle and a suction opening integrally connected thereto, and the inlet opening of the collecting chamber is made in the common first side wall of the closing chamber and the collecting chamber. The il-30 ma opening of the suction control chamber is made in the second side wall near the first; the side wall.

The device further comprises an elongate support base pivotally attached to the third side wall opposite the first side wall so that the support base 35 can be pivoted from a storage position to a support position in which the support base is generally transverse to the third side wall, supporting the housing in a predetermined position.

At least some of the housing parts are preferably visible through the 5 so that the operation or contents of the parts of the collection, closure and suction control chamber can be monitored. At least some parts of the front wall are provided with scales for indicating the volume of the chambers and also with instruction markings.

In addition, the device for draining fluids from a body cavity or part 10 preferably comprises a fluid collection chamber having an inlet for fluids, a tube connected at one end to the collection chamber inlet and the other end inserted into the body cavity or part, a compression device shaped and dimensioned. so as to keep a certain part of the tube tightly pressed, whereby this part of the tube is self-sealing, the pressing device comprising an opening so that the tube is visible and a needle for subcutaneous injection can be inserted, a suction control chamber-20 in fluid communication with the collection chamber and having a first inlet for connection to the suction source, a second inlet in communication with the ambient air, for adjusting the suction degree of the collection chamber of the anhydrous device by a plurality of predetermined presets. in the case of passengers, the control device being then located between the intake opening and the air opening, and a detector device located between the control device and the suction opening and immediately indicating the relevant suction function of the collecting chamber.

The pressing device is preferably formed of two similar elongate, curved plate portions with flanges extending along their edges. The plate portions are attached to each other along flanges and the plate portion opposite the opening is relatively rigid so that it is not pierced by a subcutaneous needle.

13 100699

The inner diameter of the curved plate portions is preferably smaller than the outer diameter of the tube. According to a preferred construction of the invention, the inner diameter of the curved plate part is about 4/5 of the outer diameter of the pipe.

The device is preferably supported by a device which supports the housing support part and comprises a support formed of at least one wall and a column part extending therefrom, said column being also arranged on the housing and a hook part, one end of which is rotatable in the column part from the first, i.e. from one position to another, i.e. to the hanging position and the other end of the hook part being shaped so as to engage the support and the first end of the hook part and the bracket being shaped and dimensioned so that the hook part locks in the hanging position.

The other end of the support device is preferably hook-shaped with the smallest distance between the sides of the hook being less than the diameter of the post part, so that when the hook part is turned to another, i.e. hanging position, the hook end can be moved away from the post part. spreads and locks the hook part in the hanging position. In addition, a restraining device is provided which is shaped so as to engage the housing and hold the hook part 25 securely in place when it is in the first, i.e. storage, position. The other end of the hook part is curved so that it can be hung on the support. In a preferred construction, the bracket and the hook part are arranged on both opposite walls of the housing.

The present invention will now be described in more detail with reference to the drawings, in which Figure 1 is a perspective view of a thoracic emptying device according to the present invention in a suspended position, Figure 100 is a plan view of the emptying device of Figure 1, and shows Fig. 4 is a front view of the emptying device of Fig. 1 without a front cover, Fig. 5 is a front view of a construction alternative without a cover according to the present invention, Fig. 6 is a first side section of the collection chamber taken along line 6-6 of Fig. 4; Fig. 7 is a second side section of the collection chamber taken along line 7-7 of Fig. 4; Fig. 8 is a first side section of the small arm of the closure chamber taken along line 8-8 of Fig. 4; Fig. 8A is an enlarged side section of the small arm of the closure chamber taken along line 8-8 of Fig. 4; Fig. 9 is a side sectional view of the first compartment of the suction control chamber taken along line 9-9 of Fig. 4, Fig. 10 is a side sectional view of the second compartment of the suction control chamber taken along line 10-10 of Fig. 4, Fig. 11 is a sectional view taken along line 10-10 of Fig. 4; 11-11, Fig. 12 is a sectional view taken along line 12-12 of Fig. 4, Fig. 13 is an enlarged view of the poppet valve and damper of the suction control chamber 30 taken along line 13-13 of Fig. 10, Fig. 14 is a sectional view of the injection and sampling device, Fig. 15 is a plan view of Fig. 14 Fig. 16 is a side sectional view taken along line 16-16 of Fig. 15 and shows the tube compressed; Fig. 17 is an enlarged, partially opened perspective view of the second hanger shown in Fig. 1; Fig. 18 is an enlarged, partially opened perspective view of the second hanger shown in Fig. 15; constructing one of the hangers according to the invention and Fig. 19 is a perspective view of the thoracic emptying device suspended and the back injection device attached to its side portion.

In the following description, references to either orientation or direction are intended to be illustrative only and are not intended to limit the scope of the present invention in any way.

The thoracic emptying device 10 shown in Figures 1 and 4 comprises three chambers, i.e. a collection chamber 12 for storing fluids collected from a particular body cavity, a water trap chamber 14 which prevents fluid from entering the collection chamber 12 when the body cavity has a high vacuum 20 and a drain chamber control chamber 16. The operation of these various chambers is generally described in U.S. Patents 3,363,626, 3,363,627, 3,559,647, 3,683,913, 3,782,497, 4,258,824 and Re. 29,877 for corresponding or common elements of the chambers. In addition, the purpose and general operation of the various chambers of the thoracic-emptying device 10 of the present invention are also described in more detail in Dekna-tel Inc.'s Pleur-evacR publication "Under-standing Chest

Drainage Systems "(1985).

The collection chamber 12 is formed on the right side 30 of the line A-A and preferably comprises four separate collection compartments 18, 20, 22 and 24 formed between the respective wall pairs 26, 28, 30, 32 and 34 as shown in Fig. 4. However, the collection chamber 12 according to the present invention is not limited to said number of collection compartments, but the number of separate collection compartments may be completely optional. Likewise, the volume of the different collection compartments may be either similar or preferably different.

The inlet 36 is located in the top wall 38 so that the liquid and gases removed from the body cavity rest directly from the collection section 18. In order to accurately measure the collected fluids, at least the collection section 18 is dimensioned and shaped to have the smallest volume, while other compartments are preferably larger so that more fluid can be collected in them. In addition, the inclined wall portion 19, shown more clearly in Figure 6, makes the lower portion of the compartment 18 smaller than its upper portion, resulting in an even smaller volume. The opening 27 in the wall 28, more clearly shown in Figure 6, first allows the liquid to overflow into the compartment 20. Accordingly, a possible overflow of the compartment 20 may occur over the upper edge of the wall 30 into the compartment 22 and from there over the upper edge of the wall 32 to the compartment 24. the upper edges are therefore at approximately the same height.

A valve for high vacuum 20 is located in the top wall 38 and communicates with the collection chamber 12. Valve 40 is a bottom valve that allows depressed filtered air to flow into the collection chamber 12. Excessive vacuum that may occur in the body cavity and thus create in the collection chamber 12 can be removed.

The closure chamber 14 is generally formed between lines A -A and B-B as shown in Fig. 4. More specifically, the closure chamber 14 comprises a small arm compartment 42 formed between the walls 34 and 44 and a large arm compartment 46 formed between the walls 44 and 47 30. Although the operation of the closure chambers is generally based on a predetermined height of liquid, e.g. water, the closure chamber of the present invention may be used either " dry "or" wet "as described in more detail below. If necessary, the air flow meter 48 'can be placed at the junction of the lower ends of the small and large arm compartments 42, 46, as shown in Figures 1 and 4. The air flow meter 48 'is intended for use in the "wet process" and is of the type described in the aforementioned U.S. Patent No. 3,683,913. However, in the "dry method", the air flow meter 48 ', if installed in the device, has no detrimental effect.

In a small stem compartment, the closure chamber 14 preferably also includes a valve mechanism having a plate portion 48 and a ball suction valve 50 that can move freely between the plate portion 48 and the tapered portion of the small stem compartment 42, as shown in Figure 4. However, the tapered portion, which is more clearly seen in Figure 8, is shaped so that during suction, the ball suction valve 50 does not close the lower portion of the small arm-compartment 42.

The plate portion 48, shown in more detail in Figure 8, comprises a circular opening 52 shaped and dimensioned so that the ball suction valve 50 protrudes when a liquid, for example water in the sealing chamber 14, moves 20 from the opening 54 to the collection chamber 12 due to excessive vacuum. which is at the upper end of the small arm compartment 42. A similar valve arrangement is also described in U.S. Patent 3,683,913 as a cylindrical valve member which also serves to hold water or liquid in the closure chamber. However, the plate 48 comprises a groove opening 56 which allows the liquid or water in the closure chamber to pass the ball valve 50 and further to the upper end 58 of the small stem compartment 42. In the upper end compartment 58 the liquid passes the ball valve 50 and rotates towards.

The upper compartment 58 is preferably shaped and dimensioned to accommodate the entire amount of fluid in the closure chamber. In this case, the water in the closing chamber cannot enter the collecting chamber through the opening 54 when a large vacuum has been formed in the collecting chamber 12. Such large pressures may be due to the patient breathing deeply, coughing, or holding their breath. This can also happen when suction stops, due to either a blockage in the suction tube or a malfunction in the hospital's suction equipment.

5 High vacuum may also occur when the patient is in the ventilator. High vacuum also occurs when the medical staff empties the tube from the emptying device to the patient. By this operation, the lumps in the tube are pushed into the collection chamber 12 by grasping the tube behind the lumps with one hand and squeezing the tube towards the collection chamber 12 so that the lumps go there.

Although the small stem compartment 42 is shown with a ball float valve 50, the shape 15 of the top compartment 58 is in itself capable of preventing fluid from the closure chamber 14 to the collection chamber 12. Thus, the ball float valve 50 is only an additional safety device that can be incorporated and used with the top compartment 58 structure. . The additional chamber 59 separates the upper main compartment 58 20 from the opening 54, which also prevents liquid from entering the collecting chamber 12. The separating chamber 59 preferably has a sloping lower surface 61, as shown in Figure 4, and the opening 54 is located at the upper end of the wall 63.

In one embodiment, the closure chamber 14 can be operated by the dry method without the need for any liquid to maintain the closure function. The ball float valve 50 can then be replaced by a shut-off valve 51 in the compartment 58 and around the opening 52, as shown in Fig. 8A. Shut-off valve 51 is a one-way valve, a mah-30 it possible suction flow in the direction of arrow C, but closes and prevents air flow collection chamber 12 in the direction of arrow D.

The upper end of the large stem compartment 46 of the closure chamber 14 is in fluid communication with the intake port 60 and the pressure relief valve, as shown in Figure 4. Alternatively, this valve 62 may, if desired, be located in the large arm compartment 19 100699 46 of the closure chamber 14 or in the suction pipe itself. Valve 62 is of the shut-off valve type, which is normally closed and comprises a valve member 63 '. It opens and releases the overpressure of the closure chamber 14 when the pressure increases significantly in the closure chamber 5 14.

The thoracic emptying device 10 also has a suction control chamber 16 with a first compartment 64 formed between the walls 47 and 66 and a second compartment 67 formed between the walls 66 and 68. The upper end 10 of the first compartment 64 is in fluid communication with the upper end of the large stem compartment 46 of the closure chamber 14. The upper end of the second compartment 67 formed between the walls 66 and 68 comprises a non-aqueous suction control device 72 as shown in Fig. 4. The upper end of the compartment 67 has an opening 74 which communicates with the air around the outlet or the rin-15 forging cavity emptying device 10. The suction control device 72 comprises a valve 76 shaped and dimensioned to engage an opening 78 in the plate portion 80 which divides the second compartment 67 into upper and lower portions as shown in Figure 5. As can be seen in the drawings 20, the disc valve 76 is located at the bottom and tensioned to the closed position by a coil spring 82 attached to the hook-shaped end of the rod 84 and one end fixed to a circular rotating collar 86 'in the top wall 38. The other end of the rod 84 is located into the hollow portion of the circular collar 86 '. The collar 86 'also has a wedge protrusion that extends into a groove in the upper end of the rod 84. In this way, the rod 84 can be rotated with the collar 86 'and moved at the same time up or down as described below. The plate-30 valve 76 shown in more detail in Fig. 13 is formed at the end of the damper 86 attached to the plate part 88, the plate 88 being then smaller than the plate 80, so that air can flow through it. The damper 86 is of the Airpot type manufactured by Airpot Corporation, 27 Lois Street, Norwalk, Connecticut. The damper 35 dampens the rapid modulation of the valve 76 that may result from the use of the thoracic emptying device 10. The damper 86 preferably comprises a graphite plug 90 attached to the stem 92 of the valve 76. The graphite plug 90 moves in the recess 1a-5 formed by the glass ring 94 as the ring 94 and the graphite plug 90 together form slippery surfaces that are not adhered to the parts.

As shown in more detail in Figure 13, the plate valve 76 is a flat plate with a circular bead 96 facing the plate portion 80 and the hole 78. The plate valve 76 10 thus forms a single cross-section between the plate 96 and the plate portion 80 in cross section. In this way, large contact surfaces and also the jamming of the plate valve 76 are eliminated, which is possible due to moisture. The plate valve 76 is preferably formed of dense polyethylene 15 which bends more than the plate portion 80. The plate valve 76 therefore more easily conforms to possible irregularities in the plate portion and securely closes the opening 78.

The rod 84 comprises a portion more clearly visible in Fig. 10 with a helical rack 98 associated with the gear-20 wheel 100; the gear 100 is disposed on a shaft 102 which supports a rotatably arranged plate 104 having a lever arm 106. Thus, the gear 100 rotates as the lever 106 moves and the helical gear bar 98 and bar 84 move up or down while the collar 86 remains in place, thereby changing the spring , which generates a holding force in the opening 78 of the valve plate 76. Such a tension corresponds to the amount of suction in the collection chamber 12 as well as in the cavity of the patient's pleura, which can then be calibrated to give a plurality of predetermined values which can then be plotted on the plate 104. For precise placement of the plate 104 in its circumference. the parts are provided with a corresponding group of recesses 106 'operatively connected to a stop arm 108, the outer end of which is in a predetermined presetting recess 35 106' corresponding to a preset suction level. The retaining arm 108 21 100699 is supported on an outer wall 68 with an opening 74 which allows air to flow into the suction control portion 16. As already mentioned, rotation of the collar 86 * allows the rod 84 to move up or down with the plate 104 in a certain position, allowing the suction level adjustments to be calibrated properly.

The suction control chamber 16 comprises a visual detector which immediately detects the relevant suction function of the collection chamber 12. This visual indicator 10 is described in more detail below.

As shown in Fig. 1, the emptying device 10 comprises a housing having a front wall 110 attached to the rear wall 112. The front wall 110 and the rear wall 112 are connected by four side walls, the top wall 38, the right side wall 26, the left side wall 68 and the bottom wall shown in more detail in Fig. 2. 114. As shown in Figures 6-10, different walls and sides may be of different shapes so that different chambers can be defined between them. In a preferred structure, the co-20 roll can be formed as a unitary structure with all the walls being connected at their circumferential parts. Alternatively, the separate side walls and the front and rear walls may be attached to each other by suitable devices well known to those skilled in the art. According to the preferred structure shown in Figure 1, the housing 10 has side supports 116, which are more clearly seen in Figure 2, and to which hangers 118 are connected, so that the device 10 can be supported on a support bar 120, for example at the end of a patient bed or the like. In an alternative construction, the device 10 comprises a floor support 30 122 pivotally attached to the bottom wall 114 as shown in Figure 4. The floor support 122 is essentially a long bar with an opening in the center so that it can be moved over the slit collar 124 shown in Figure 3. When the floor support 122 is attached to the slit collar 124, it is capable of rotating in the opening therein and can be positioned transversely to the longitudinal axis of the base wall 114 as shown in phantom in Figures 1 and 7. As desired, the floor support 122 can only be secured in place when is located in the base position. Preferably, the front wall 110 of the housing also has a handle 125 associated with it as a fixed structure to facilitate carrying and handling the device.

In order to be able to see the contents of the collection chambers, the front wall 110 shown in Fig. 1 is transparent at all points 10, which are on top of the different collection compartments. The heights of the compartments are calibrated with scales 130 which indicate the amount of liquid accumulated in the compartments. As already mentioned above, the smaller volume of the first collection compartment allows more accurate measurements, for example 0-15,155 cm3 of liquid, while the other compartments have larger volumes. Thus, the performance of the thoracic emptying device 10 over a period of time and throughout the fluid emptying operation can be readily determined by the medical staff by reading the fluid level from the last filled collection compartment.

Other parts of the front wall 110 are also made transparent, so that other functions of the device 10 can also be monitored. In this case, the small arm compartment 42 of the closure chamber 14 is transparent for determining the liquid level in the closure chamber 14. Thus, a scale 134 is made for the entire length of the small arm compartment 42, by means of which the liquid height can be easily measured. The air flow meter 48 'also has a transparent portion 136 from which air bubbles passing through it can be seen.

To fill the liquid, the closure chamber 14 is provided with a metal ring portion 138 shown in Fig. 1. A ring portion 140 is provided in the front wall 110, respectively, so that liquid can be injected at the junction of the first and second compartments 64, 67 of the suction control chamber 16 as needed. In the center of these metal ring portions 138 and 140 is a rubber portion 142 which allows the liquid to be injected by a needle for subcutaneous injection 23 passing through the rubber seal but not damaging it, so that the seal self-adhesives and keeps the relevant chambers or parts intact.

5 As shown in Figure 1, the device 10 is connected to a suction source by a suitable tube 144 connected to a suction port 60. Accordingly, a tube 146 is used which is connected to a collection chamber inlet 36 and one end of which is inserted into a body cavity or part to remove gases and liquids. .

There is also a transparent portion 148 on top of the suction control chamber 16, from which, if desired, an alternative bubbling function can be seen when used in this chamber part, whereby the suction function provides both visible and audible indication. Accordingly, the transparent portion 150 allows visual operation of the operation of the first compartment 64 of the suction control chamber 16, as will be described in more detail below. The medical staff can then easily see the operation of the device 10 when looking at either part 148 or 150. For visual determination of the desired suction level, the plate 104 is visible through the transparent portion 152. The portion 152 is calibrated by indicia 154 which readily indicate the degree of suction selected by moving the lever arm 106 visible in the opening 74 in the left sidewall 68. Various instructions may be placed on the front wall 110 as shown at 156, 158 and 159.

Of the thoracic emptying device 10, a construction alternative 10 'is shown in Fig. 5. To simplify the matter, in the structure 10' shown in Fig. 5 and the structure 10 shown in Fig. 4, the same parts have the same reference numerals. However, the thoracic emptying device structure 10 'of Fig. 5 has a collection chamber 12 which is in direct fluid communication with the suction control chamber 16 through an opening in the wall 63 without the closure chamber of the structure 35 of Fig. 4. In Fig. 5, the collection chamber 12 is thus formed on the right side of the line A-A and the suction control chamber 16 on the left side thereof.

During the emptying operation, it is a good idea to occasionally take a fresh sample of the fluid removed from the patient for culture or other experimental procedures. It is also preferred or desirable that the patient be administered antibiotics as well as other medications if infection is detected. According to current sampling methods for thoracic emptying, some such devices 10 have a resealable point in the collection chamber 12. However, the clinician or medical staff cannot obtain a fresh sample with this method because there are always fluids in the collection chamber that have been collected over a period of time. Nor can drugs be instilled into the po-15 space through such a resealable site. Another common method of sampling is to take a sample directly from the patient with a tube, usually latex. Although latex tube manufacturers claim that latex tube is self-sealing, experiments have shown that leakage occurs under normal-20 paint operating conditions. Another disadvantage associated with such sampling and injection methods is that the subcutaneous needle can pass through both walls of the tube and potentially penetrate and damage the clinician's skin. When taking a sample of latex foam-25, there is always a risk that the clinician's skin will get blood.

Therefore, the device may be provided with a device 159, which is preferably pressed into a tube 146 made of latex, which leaves the suction opening 36 and the other end 30 of which is intended to be inserted into a cavity or part to be emptied of liquids and gases. With the compression device 159 shown in Figure 14, the latex tube 146 can be used to take fresh samples or drop drugs without bleeding or possibly infecting the clinician with a 35 subcutaneous needle injection. The compression device 159 keeps at least a portion of the wall of the tube 146 compressed, thereby causing the wall of the tube to close spontaneously and further allows the use of a subcutaneous needle.

The device 159 has two compression plates - an upper compression plate 160 and a lower compression plate 162 - the inner diameter of which, when connected to each other, is smaller than the outer diameter of the tube 146. Plates 160 and 162 are similar in construction and curved, as shown in Figure 14. The flanges 164 (Fig. 14) at the longitudinal edges of the plates allow the plates 160 and 162 to be secured together in a suitable manner, for example, by gluing, welding or some other method, as is known to those skilled in the art. In the center of the top plate 160 is an opening 166 through which the tube 146 can be seen. Since the inner diameter formed by the assembled plates 160, 162 is and is preferably 20% smaller than the outer diameter of the tube 146, the tube 146 protrudes into the opening of the top plate 160, as can be seen more clearly from Fig. 16. In this way, the tube 146 remains compressed at least in the opening 166, so that when a subcutaneous needle is inserted through the tube 146 through the opening 166 and then removed, the tube 146 closes automatically and prevents fluid leakage. As shown in Figure 15, the tube 146 is also glued to a suitable solvent at locations 168, 170 near the orifice portion 166. The tube 146, and specifically the portion at its orifice 166, remains in place even when handled or pulled from locations outside the press device 159. points. Such treatment of the tube occurs when the medical staff compresses the tube 146 as described above to remove lumps from, for example, the drain tube.

By means of the glued points 168 and 170, the tube remains securely in place in the device 159. At least the back plate of the device 159 is relatively rigid, thereby preventing the subcutaneous needle from penetrating the clinician's skin as described above.

The visual detector shown in Figure 4 comprises, as already mentioned, a float part 172 located in the first compartment 64 of the suction control chamber 16 and in particular in its upper part near the junction of the first compartment 64 and the large arm compartment 46 of the closure chamber 14. The float part 172 is dimensioned and shaped so as to be able to move in the closed area 174 defined between the pins 176, 178 5 which restrict the movement of the float part 172 in the closed area 174. The float part 172 and also the closed area 174 are precisely dimensioned so that the float parts 172 moves upward in the closed area 174 when a predetermined suction level controlled by the control device 71 is formed in the collection chamber 12.

Thus, the float portion 172 rises toward the stop 176 when the predetermined suction level is formed. To monitor the float portion 172, the front wall 110 of the discharge device has a transparent portion 150 from which the upward movement of the float portion 172 toward the abutment portion 176 can be monitored. Therefore, the medical staff immediately sees that the suction function of the collection chamber 12 of the emptying device 10 is appropriate. The float portion 172 is preferably colored, making it more distinct from the surrounding portions. In a preferred construction, the float portion 172 is self-illuminating so that the suction function 20 can be easily monitored even at dusk or at night.

It should be noted that the anhydrous suction control section 16 is independent of the liquid with which the suction degree is provided in conventional emptying devices. However, in these typical draining devices, the evaporation of the liquid causes • 25 variations in the suction pressure. Such pressure fluctuations, i.e. are minimized by the anhydrous suction control device 16 according to the present invention, which is independent of the suction control fluid.

Thus, the control device 72 does not use water to leave the suction oh-30. The suction level is adjusted by turning the plate 104. The position of the plate 104 correspondingly extends the spring 82. As the spring 82 lengthens, a certain force is applied to the valve plate 76 in the opening 78. The force generated is then a function of the spring elongation rate and spring physical properties. When the suction 35 is applied to the collection chamber 12 and then to the chest cavity or body part of the patient, a certain force 27 100699 is applied to the valve plate 76. If the force due to suction on the valve plate 76 exceeds the force generated by the elongation of the spring 82, the plate valve 76 will move, allowing air to flow into the chambers of the thoracic emptying device. More specifically, the air then enters through the opening 74, passes through the opening 78 in the wall 80, around the smaller wall 88, through the opening 79 in the wall 81, and then through the second compartment 67 and the first compartment 64 of the suction control chamber 16 and exits the suction opening 60. The disc valve 76 is still in its forward position 10 until a balance of force is obtained, after which the disc valve 76 moves into the opening 78 again and closes it. However, as described above, adjusting the suction causes rapid modulation of the plate valve 76 in the presence of said differences. To reduce or attenuate this modulation, the device uses an attenuator 86, the structure of which has been described above.

Depending on the shape of the adjusting device 72 and its location in the thoracic emptying device 10, an air flow is provided that allows air to be evacuated from the patient's thoracic cavity rather than the adjusting device 72. This is possible with the aperture 78 larger than the smallest area of any chamber. -area. The system thus takes into account variations in patient-related air leaks and also the suction levels of the suction source, but maintains a predetermined preset suction level in the collection chamber 12. The thoracic emptying device of the present invention is with a suction adjusting device 72 and indicated by the adjustment position of the plate 104.

By way of comparison, conventional control systems for a thoracic emptying device use a limited nozzle located in the suction tube. These systems are not able to maintain the desired level of suction pressure, but limit the volume flow of air in such systems.

The float portion 172 may be replaced by a bubble detector that provides immediate both visible and audible air from the respective suction level of the collection chamber 12. The bubble detector comprises a bubbling zone formed at the junction between the lower ends 64 of the first compartment 64 and the second compartment 67 of the suction control chamber 16. A predetermined amount of liquid is admitted to the bubbling zone, so that when the device 10 is in use, the air passing through the control device 72 passes through the bubbling zone, bubbles through it towards the suction opening 60 and then indicates the relevant suction function of the collecting chamber 12. When the transparent part 148 is arranged in the front wall 110 as shown in Fig. 1, a visual indication 15 is also obtained. In this case, the medical staff will be able to both see and hear, passing the thoracic emptying device 10 shown in Figures 1 and 4, that it is functioning properly.

However, since the poppet valve 76 is not completely sealed, but in most cases allows some air to pass through the inlet 60, a precisely dimensioned passage 180 is provided in the wall portion 182 between the first compartment 64 and the second compartment 67 above a predetermined liquid surface 25 in the bubbling zone. Any leakage air then passes the bubbling zone and passes directly into the suction pipe without giving a false alarm for an operation that has not yet started because the suction has not yet reached a predetermined preset level. In this connection, a ren-30 gas 140 as described above is provided, through which the liquid can be passed. Alternatively, a suitably sized flexible injection tube (not shown) may be inserted through the suction port 60 and placed in the lower portion of the first compartment 64 to allow fluids to enter. Correspondingly, the flexible injection tube can also be placed in the large arm 46 of the closure 35 chamber 14, whereby the liquid enters it. These alternative operations do not require the ring members 140 and 138 shown in Figure 1 100699 29. Thus, when a predetermined amount of liquid is injected into the bubbling zone, air passing therethrough causes bubbling in the suction control chamber section 16 when the suction exceeds a preset value. The bubbling zone and the control device 5 are designed in such a way that the addition or removal of water to the bubbling zone in no way affects the suction level. The bubbling zone and the first compartment 64 and the second compartment 67 have turntables 182, 184 and 186 which contribute to preventing water in the bubbling zone 10 from rising upwards and leaking into the closure chamber 14. In addition, the height of the second compartment 64 is chosen to prevent such overflow. It should be noted that the predetermined amount of liquid in the bubbling zone is less than the amount of liquid 15 required to open the valve plate 76. Compared to the float part 172, the predetermined amount of liquid corresponds to the inertial mass of the float part 172.

Although the suction control device 72 of the present invention has been described in connection with the thoracic emptying device 10, it can also be used to control the suction of other emptying devices. As shown in Fig. 4, the wall portions 190, 192 and 194 are arranged as additional support portions.

As shown in Fig. 17, the hanger device comprises a support portion 116 formed of two left-facing walls 272 and 274 with a support portion 276 therebetween. As shown in Fig. 17, the wall 272 is positioned on the side wall 26 of the emptying device 10. Opposite walls 272 and 274 are joined as a common side wall 273, the operation of which will be described in more detail below. The hanger device 118 also comprises a hook portion 278 formed of cotton wool bent at both ends. The upper end of the hook portion 278 has a greater degree of curvature so as to correspond, for example, to the tube 120 at the end of the patient bed. The curved lower end of the vanung 278 has a hook-35 pattern so that a smaller curved end can be placed around the rod portion 276. The small curved end has a smaller distance, indicated by the letter A, which is smaller than the diameter of the rod part 276. The smaller curved end of the vanung 278 is flexible so that when the hook portion is rotated to the hanging position shown in Figure 17 as desired, the small curved end of the hook portion 5 can be moved away from the tube portion 276 and then moved securely forward toward the minimum distance "A". spreads flexibly and locks the hook part in the hanging position.

When the hanger portion is not needed to support the housing, the pad 278 can be moved, thereby pulling the rod portion 276 out of the shortest distance portion, which then locks back into its previous position and holds the hook portion around the rod portion 276. The hook portion can then be pivoted downward and the tongue 278 moved against the shoulder 279 positioned below the bracket 116 as shown in FIG. It should be noted that the end comprising the hook may rotate around the rod portion 276, but is still attached thereto because the common sidewall 273 prevents the hook end from detaching from the rod portion 276. Alternatively, if there is no common sidewall 273, the front wall 110 extends around the side walls, as shown in Figure 17, to such an extent that as the end comprising the hook passes the rod 176, it engages the elongated portion of the front wall 110 and cannot move 25 further. This in turn holds the hook portion in place relative to the support portion 116.

Fig. 18 shows an alternative embodiment of the hanger device 118. In this alternative, the support member 280 comprises a wall 282 with a rod portion 284 attached at one end to a side wall 26 of the housing. The wall 282 extends to the front wall 110, as can be seen in Figure 18. The hanger device 118 also comprises a hook portion 286 formed of a tongue that is curved at both ends in a manner similar to the hook portion 278. The curved heads comprising the hook part of the hook part 286 have the functions corresponding to the functions described above with reference to the hook part 278 above. However, the hook portion 286 has a portion 288 bent so that as the hook portion 286 pivots from the storage position shown in broken lines 290 to the vertical position shown in solid lines, the bent portion 5 288 may rest on the top of the wall 292 when the hook portion 286 is then pushed down around the portion 284 to the hook portion 278 with reference to as described above.

The structure shown in Fig. 18 has a hook carrier 294 in which the pad body 296 is placed as shown. The pad body generally shown in Figure 19 comprises a loop portion 298 that engages the lower leg 200 of the device, housing, or front wall 110. The pad body 296 supports a bag 202 of the type used in automatic fluid transfer devices and described in U.S. Patent No. 4,443,220. The fluid transfer device includes a conduit 204 connected to a cavity to be drained of liquid and further a tube 206 connected to an inlet 146 of the discharge device 10. It should be noted that the automatic fluid transfer device 20 is included so that the fluid collected therein can be returned to the patient, if necessary, before the fluid is collected in the drain device 10.

The present invention has been described in detail, with particular emphasis on the structures to be performed. It should be noted, however, that those skilled in the art may recognize various possibilities for making structural variations and modifications within the spirit and scope of the invention.

30

Claims (14)

32 100699 An apparatus for draining fluids in a body, comprising: a a collection chamber (12) for collecting fluids from a body cavity, said collection chamber comprising an inlet (36) in fluid communication with the body cavity, b. A suction control chamber (16) for adjusting the vacuum of the collection chamber; a shut-off chamber (14) which prevents ambient air from entering the collecting chamber, the device further comprising: 1. a large stem compartment (46) having a suction opening at one end, 2. a small stem compartment (42) having an opening at one end 15 in communication one end of the small arm compartment (42) has a first chamber (58) which prevents ambient air from entering the collection chamber when the collection chamber (12) has a relatively high sub-20 pressure which is characterized in that it further comprises a second chamber (59) arranged to separate the first chamber from the opening leading to the collection chamber, so that any sealing medium coming from the first container chamber enters the second chamber and then returns to the first chamber and does not pass through the opening. Device according to claim 1, characterized in that the first chamber (58) is dimensioned and shaped to accommodate the predetermined amount of sealing medium present in the sealing chamber at the junction between the large stem compartment 30 and the small stem compartment. Device according to claim 2, characterized in that the first chamber is shaped so that the incoming sealing medium turns in a direction deviating from the normal flow, whereby the incoming liquid circulates from the first in the chamber and is collected therein. Device according to claim 3, characterized in that it has a) a wall part (48) arranged on a small arm and separating the small chamber of the first chamber from the rest of the wall part, the wall part then comprising an opening (52), and b) a valve device dimensioned and shaped to open and close substantially the orifice when the valve 10 is open when the suction of the collection chamber is at a predetermined suction level and the valve device otherwise tends to close substantially the orifice when fluid enters the first chamber from the large and small stem compartments. Device according to claim 4, characterized in that the valve device comprises a ball (50) which is dimensioned and shaped so that it can be inserted into the opening and that it closes it substantially. Device according to claim 5, characterized in that the opening has a recess (56) so that the closing medium 20 enters the first chamber when the ball valve is on the opening and closes it substantially, after which the closing medium changes its direction in the first chamber so that it is mainly transverse to the direction of normal suction flow. Device according to claim 6, characterized in that the remaining part of the small stem is tapered so that the ball valve moves between the taper and the opening. Device according to claim 7, characterized in that the rest of the small arm has a smaller cross-sectional area than the cross-sectional area of the first chamber. Device according to claim 1, characterized in that the small stem compartment (42) further comprises a single-way shut-off valve (51) located and directed to the small stem compartment and that when the valve is open the suction flow enters the suction opening from the collecting chamber but closes prevents ambient air from entering the collection chamber. Device according to Claim 9, characterized in that a single-way shut-off valve is arranged at the opening which connects the small arm compartment to the collecting chamber. The device according to claim 1, characterized in that it further comprises an air flow meter (48) arranged at the junction of the other ends of the small arm and the large arm and measuring the amount of gases coming from the body cavity. The device according to claim 1, characterized in that it further comprises a shut-off valve device arranged in a large stem compartment with the shut-off valve device normally closed and allowing ambient air to enter the shut-off chamber when the pressure increases appreciably in the shut-off chamber. Device according to claim 1, characterized in that the second chamber comprises a sloping lower surface (61), by means of which the barrier liquid flowing from the first chamber to the second chamber returns to the first chamber. Device according to claim 1, characterized in that the second chamber comprises a wall (63) with a top point and separates the second container from the collection chamber, the wall at the uppermost point having an opening (54) preventing the liquid from entering the collection chamber. 35 100699