Chest drainage system

Abstract

The utility model provides a thoracic cavity drainage system, which is an optimization of an existing thoracic cavity drainage system containing a water sealing bottle and aims to solve the problem that air in a thoracic cavity is difficult to exhaust due to the fact that thoracic water is discharged into the bottle. In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a main body of the chest drainage system is a double-cavity drainage bottle, a hollow water seal cavity is formed between the inner wall and the outer wall of the double-cavity drainage bottle, an inner cavity is formed in the inner wall, and an outer cavity is formed in the outer wall of the double-cavity drainage bottle; the upper end face of the double-cavity drainage bottle is provided with a breather pipe which penetrates through the outer wall and the inner wall and then is communicated with the inner cavity, and a liquid inlet cavity which only penetrates through the outer wall and is communicated with the water seal cavity; a one-way valve is arranged in the center of the bottom surface of the inner wall; and the other end of the drainage tube is inserted into the liquid inlet cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a thoracic drainage system for treating pleural effusion and pneumothorax. Background Art

[0002] In the prior art, chest drainage usually requires a water seal system to prevent air from flowing back into the chest cavity and causing secondary pneumothorax. The principle is a physical barrier based on a water seal, which is used to prevent external air from flowing back into the chest cavity through the drainage tube, while allowing the air and fluid in the chest cavity to be discharged. This mechanism is particularly important for the treatment of pneumothorax and pleural effusion.

[0003] The water seal system usually inserts one end of the drainage tube or connecting tube 2 cm below the surface of the solution. If the pleural pressure is higher than the pressure of the tube immersed in the solution, air and fluid will be immersed in the bottle; however, when a large amount of fluid is discharged from the patient's pleural cavity, the liquid level will rise, and the distance between the tube port and the surface of the solution will become farther and farther. At this time, the pleural air requires a higher pressure to be discharged, and it is very likely that the air will stay in the chest due to insufficient pressure. Utility Model Content

[0004] The utility model provides a thoracic drainage system, which is an optimization of the existing thoracic drainage system containing a water-sealed bottle and is intended to solve the problem of difficulty in removing air from the thoracic cavity caused by pleural effusion being discharged into the bottle.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A chest drainage system, the main body of which is a double-chamber drainage bottle, and a hollow water-sealed cavity is formed between the inner wall and the outer wall of the double-chamber drainage bottle, the inner wall is the inner cavity, the upper end surface of the double-chamber drainage bottle is provided with a ventilation tube which passes through the outer wall and the inner wall and is connected to the inner cavity, and a liquid inlet cavity which passes through only the outer wall and is connected to the water-sealed cavity; a one-way valve is provided at the center position of the bottom surface of the inner wall; one end of the drainage tube is connected to the chest cavity, and the other end is inserted into the liquid inlet cavity.

[0007] Furthermore, a water seal line is provided on the side surface of the liquid inlet cavity for marking the amount of water seal liquid injected.

[0008] Furthermore, the sum of the volume from the liquid inlet cavity to the water seal line and the volume of the water seal cavity is 1 / 5-1 / 4 of the volume of the inner cavity.

[0009] Furthermore, a silicone sealing ring is fixed at the upper port of the liquid inlet cavity to fix and seal the drainage tube.

[0010] Furthermore, the distance between the liquid inlet cavity and the upper end surface of the outer wall is 2-3 cm.

[0011] Furthermore, a filter cap is fixed to the upper port of the ventilation pipe, and the filter cap is used to remove the smell of drainage fluid or gas. The filter cap is fixed to the upper port of the ventilation pipe by means of threads.

[0012] Furthermore, the filter cover is a hollow annular structure, and the first porous air-permeable plate, the activated carbon layer and the second porous air-permeable plate are fixed in sequence inside the annular structure.

[0013] Furthermore, a porous fragrance layer may be added to the outer side or the inner side of the first porous air-permeable plate.

[0014] Furthermore, a sealing cover is detachably fixed to the ventilation tube and the upper port of the liquid inlet cavity, so as to seal the double-chamber drainage bottle after the drainage fluid is collected.

[0015] Furthermore, a sealing cover is detachably fixed to the filter cover and the upper port of the liquid inlet chamber, so as to seal the double-chamber drainage bottle after the drainage fluid is collected.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The biggest advantage of the double-chamber drainage bottle is that the volume used for the liquid seal is fixed, which is always the sum of the volume of the liquid in the liquid inlet chamber and the volume of the liquid in the water seal chamber. The volume of the liquid seal will not increase with the discharge of drainage fluid.

[0018] The sealing silicone pad at the liquid inlet cavity is used to seal the drainage tube on the one hand, and to fix the drainage tube on the other hand, to prevent the drainage tube from falling out during the drainage process;

[0019] The filter cap connected to the upper port of the ventilation tube can remove odor from the drainage fluid and gas. The treated gas will no longer have odor when discharged into the air, making the treatment environment more comfortable.

[0020] Finally, the double-chamber drainage bottle is sealed with a sealing cap to facilitate subsequent transportation and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a water seal bottle and its use method in the prior art;

[0022] Figure 2 This is a schematic structural diagram of a double-chamber drainage bottle in a chest drainage system in Example 1 of the utility model;

[0023] Figure 3 This is a front view schematic diagram of a double-chamber drainage bottle in a chest drainage system in Example 1 of the utility model;

[0024] Figure 4It is a structural schematic diagram of a filter cover in a chest drainage system in Example 2 of the utility model.

[0025] Among them, 1-drainage tube, 2-ventilation tube, 10-double-chamber drainage bottle, 11-inner wall, 12-outer wall, 13-water seal chamber, 14-inner cavity, 20-ventilation tube, 30-liquid inlet chamber, 31-silicone sealing pad, 32-water seal line, 40-one-way valve, 50-filter cover, 51-first porous air permeable plate, 52-activated carbon layer, 53-second porous air permeable plate, 54-thread. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the embodiments described in the present invention are embodiments of a part of the present invention, and all other embodiments obtained by those skilled in the art based on the embodiments in the present invention without making any creative work shall fall within the scope of protection of the present invention.

[0027] In the prior art, the water seal bottle in the drainage system and the method of using the same are as follows Figure 1 As shown, one end of the drainage tube 1 is finally connected to the patient's body, and the other end is inserted into the water seal bottle and is located below the surface of the saline solution; the ventilation tube 2 or the ventilation hole is used to discharge the gas in the bottle and decompress the system; however, in this system, as a large amount of liquid is discharged into the water seal bottle, the distance between the drainage tube 1 and the surface of the saline solution will be greater, which results in the pleural gas requiring a higher pressure to be discharged, and the pressure will become lower and lower with the discharge time, which also causes the gas to not be discharged smoothly, resulting in the air remaining in the chest.

[0028] The solution of the present invention is to keep the pressure of the liquid seal basically unchanged, that is, the distance that the drainage tube 1 is inserted below the liquid surface basically remains unchanged; at the same time, the ventilation channel must be retained, but because the pleural effusion stays in the body for a long time and usually has a strong smell, the ventilation channel is optimized for deodorization at the same time, so that the discharged gas has no special smell. Example 1

[0029] like Figure 2 and Figure 3 As shown, this embodiment provides a double-chamber drainage bottle 10, which is composed of an inner wall 11 and an outer wall 12. The inner wall forms an inner cavity 14, and a flowing water seal cavity 13 is formed between the inner wall 11 and the outer wall 12.

[0030] The upper surface of the double-chamber drainage bottle 10 has a ventilation tube 20 that passes through the outer wall 12 and the inner wall 11 and is connected to the inner cavity 14; there is also a liquid inlet cavity 30 that passes through the outer wall 12 and is connected to the water seal cavity 13. The height of the liquid inlet cavity 30 is 2-3 cm. The liquid inlet cavity 30 is connected to the water seal cavity 13. The sum of the volumes of the liquid inlet cavity 30 (liquid is added to the position of the water seal line 32) and the water seal cavity 13 is 1 / 5-1 / 4 of the volume of the inner cavity 14, which is approximately equal to the volume of the water seal liquid in the initial state of the water seal bottle in the prior art.

[0031] The upper opening of the liquid inlet cavity 30 is provided with a silicone sealing pad 31 , and the drainage tube is inserted into the liquid inlet cavity 30 through the silicone sealing pad 31 . The friction between the silicone sealing pad 31 and the drainage tube enables the drainage tube to be sealed and fixed in the liquid inlet cavity 30 .

[0032] There is a one-way valve 40 at the center of the lower surface of the inner cavity 14. When liquid and / or gas are drained into the double-chamber drainage bottle 10, the one-way valve 40 is opened after being subjected to force, and the gas and / or liquid will enter the inner cavity 14. The gas entering the inner cavity 14 will be discharged through the ventilation tube 20, thereby maintaining the pressure of the inner cavity 14 stable.

[0033] The inner wall 11 and the outer wall 12 are made of hard materials. The shape of the double-chamber drainage bottle 10 is cylindrical in this embodiment. Of course, in addition to the cylindrical shape, there are many other possible shapes such as a cube.

[0034] The pressure at which the one-way valve 40 opens is equal to the pressure of the liquid in the liquid inlet chamber 30 (when the liquid is added to the position of the water seal line 32) and the liquid in the water seal chamber 13 (when the liquid is filled). Example 2

[0035] On the basis of Example 1, Figure 4 As shown, a filter cover 50 is fixed above the ventilation pipe 20 by threads, and is used to remove odor from the discharged liquid and gas.

[0036] In addition, a sealing cover is provided at the upper end of the filter cover 50 and the liquid inlet chamber 30. The sealing cover is connected by threads or sealed by a sealing plug and is used after the drainage fluid is collected to facilitate subsequent transportation and processing.

[0037] There is a thread 54 on the inner side of the filter cover 50, which is fixed with the thread on the outer side of the ventilation pipe 20; the filter cover 50 is a hollow annular structure, and its interior is composed of a first porous air permeable plate 51 and a second porous air permeable plate 53 and an interlayer activated carbon layer 52 therebetween. The gas passes through the second porous air permeable plate 53, the activated carbon layer 52, and the first porous air permeable plate 51 in sequence and is discharged into the air.

[0038] Of course, a similarly porous fragrance layer can be added on the outside or inside of the first porous air-permeable plate 51, and the fragrance layer has porous absorbent paper and is used in combination with fragrance essential oils. Example 3

[0039] On the basis of Example 2, a chest drainage system is assembled, and saline solution is injected from the upper opening of the double-chamber drainage bottle 10 to the position of the water seal line 32, the filter cover 50 is fixed to the upper opening of the ventilation tube 20, one end of the drainage tube is inserted into the liquid cavity 30, the drainage tube is fixed by the sealing silicone pad 31, and the other end of the drainage tube is inserted into the chest cavity.

[0040] As the drainage fluid or gas in the thoracic cavity flows into the liquid inlet cavity 30 and the water seal cavity 13, the one-way valve 40 is opened after being subjected to force, and the liquid and gas flow into the inner cavity 14. The gas entering the inner cavity is discharged from the inner cavity through the ventilation tube 20 connected thereto, and the gas is removed through the filter cover.

[0041] After the drainage or exhaust operation is completed, the sealing covers are respectively covered on the upper end openings of the vent pipe 20 and the liquid inlet cavity 30 to complete the sealing.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require any actual relationship or order to exist between these entities or operations.

[0043] The terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chest drainage system, characterized in that: The main body is a double-chamber drainage bottle, and a hollow water-sealed cavity is formed between the inner wall and the outer wall of the double-chamber drainage bottle, the inner wall is the inner cavity, and the upper end surface of the double-chamber drainage bottle is provided with a ventilation tube that passes through the outer wall and the inner wall and is connected to the inner cavity, and a liquid inlet cavity that only passes through the outer wall and is connected to the water-sealed cavity; a one-way valve is provided at the center position of the bottom surface of the inner wall; one end of the drainage tube is connected to the chest cavity, and the other end is inserted into the liquid inlet cavity.

2. A chest drainage system according to claim 1, characterized in that: A water seal line is provided on the side surface of the liquid inlet cavity for marking the amount of water seal liquid injected.

3. A chest drainage system according to claim 2, characterized in that: The sum of the volume from the liquid inlet cavity to the water seal line and the volume of the water seal cavity is 1 / 5-1 / 4 of the volume of the inner cavity.

4. A chest drainage system according to claim 1, characterized in that: A silicone sealing ring is fixed at the upper port of the liquid inlet cavity to fix and seal the drainage tube.

5. A chest drainage system according to claim 1, characterized in that: The distance between the liquid inlet cavity and the upper end surface of the outer wall is 2-3 cm.

6. A chest drainage system according to claim 1, characterized in that: A filter cap is fixed to the upper end of the ventilation pipe, and the filter cap is used to remove the smell of drainage fluid or gas. The filter cap is fixed to the upper end of the ventilation pipe through threads.

7. A chest drainage system according to claim 6, characterized in that: The filter cover is a hollow annular structure, and a first porous air-permeable plate, an activated carbon layer and a second porous air-permeable plate are fixed in sequence inside the annular structure.

8. A chest drainage system according to claim 7, characterized in that: A porous fragrance layer may be added to the outer side or the inner side of the first porous air-permeable plate.

9. A chest drainage system according to claim 1, characterized in that: A sealing cover is detachably fixed at the upper end of the ventilation tube and the liquid inlet cavity, and is used to seal the double-chamber drainage bottle after the drainage fluid is collected.

10. A chest drainage system according to claim 6, characterized in that: A sealing cover is detachably fixed at the filter cover and the upper port of the liquid inlet cavity, and is used to seal the double-chamber drainage bottle after the drainage fluid is collected.

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