A thoracic drainage tube capable of preventing blockage

Abstract

The application discloses a thoracic drainage tube capable of preventing blockage, and belongs to the technical field of medical devices. The thoracic drainage tube comprises a drainage tube body, a base connected with a pump, and a supporting structure used for extending into the drainage tube body. The supporting structure comprises a plurality of supporting rings. The hole diameter of the supporting ring is adjustable. Foldable connecting structures are arranged between adjacent supporting rings. A hollow boss extending into the drainage tube body is arranged on the base. A plurality of telescopic structures are arranged on the boss. The connecting structure at the end is connected with the end of the corresponding telescopic structure. A fastening structure for fixing the drainage tube body is arranged on the base. A extending pipe is arranged in communication with one end of the drainage tube body. A plurality of drainage holes are formed in the circumferential side of the extending pipe. The purpose of the thoracic drainage tube is to solve the problem that the existing drainage tube is prone to blockage.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a chest drainage tube that can prevent blockage. Background Technology

[0002] A chest drainage tube is a widely used drainage device for hemothorax, pneumothorax, and empyema, playing a vital role in the treatment of these diseases. The main principle of a chest drainage tube is to drain pleural effusion through external fixation and pressure differential, thereby helping lung tissue to re-expand and patients to recover as soon as possible.

[0003] Pleural effusion contains blood clots and tissue fragments, which can easily cause drainage tube blockage. At the same time, flexible drainage tubes are also easily blocked by external pressure. However, existing chest drainage tubes are difficult to clear quickly after blockage, and often need to be replaced in time. Replacing the drainage tube will cause pain at the wound site and also increase the risk of infection. Summary of the Invention

[0004] In view of this, the present invention discloses a chest drainage tube that can prevent blockage, the purpose of which is to solve the problem that existing drainage tubes are prone to blockage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A pleural drainage tube designed to prevent blockage includes a drainage tube body, a base connected to a pump, and a support structure for inserting the drainage tube body. The support structure includes several support rings with adjustable apertures, and foldable connecting structures between adjacent support rings. The base has a hollow boss that extends into the drainage tube body, and the boss has several telescopic structures. Connecting structures at the ends of the bosses are connected to the ends of the corresponding telescopic structures. The base has a fastening structure for fixing the drainage tube body. One end of the drainage tube body is connected to an insertion tube, and the insertion tube has several drainage holes around its periphery.

[0006] In this design, the aperture of the support ring is reduced, the drainage tube body is fitted onto the support structure, and the boss is inserted into the end of the drainage tube body. The drainage tube body is then fixed to the boss by a fastening structure. The aperture of the support ring is then increased to support the inner wall of the drainage tube body, preventing the drainage tube body from being flattened by external pressure and causing blockage. The foldable connection structure allows adjacent support rings to swing relative to each other, thus adapting to the bending of the drainage tube body.

[0007] The base is installed on the pump, and the insertion tube is inserted into the pleural cavity. The pump provides negative pressure to suction out pleural effusion through the drainage hole. During the drainage process, when blood clots or tissue fragments cause blockage of the drainage tube, the diameter of the support ring is reduced, and the support ring is moved axially along the drainage tube body through the telescopic structure, thereby clearing the blockage of blood clots, tissue fragments, etc., without the need to replace the drainage tube body.

[0008] Furthermore, the support ring includes several circumferentially distributed supports, with support rods provided between adjacent supports. Both the supports and support rods are arc-shaped, and the supports are hollow. An airbag with two movable ends is fixed inside the support. The end of the support rod extends into the corresponding support and connects to the airbag. The connecting structure includes several connecting balls corresponding to the supports. Each connecting ball has a spherical cavity at both ends, and a movable ball is movably disposed in each spherical cavity. Each movable ball is fixed with a support rod that is spherically hinged to the corresponding support. Several flexible tubes are provided through the protrusion. The flexible tubes sequentially pass through the corresponding support rod, support, movable ball, and connecting ball, and each flexible tube communicates with the adjacent airbag. A conduit communicating with all the flexible tubes is provided on the base.

[0009] In this solution, when the orifice diameter of the support ring needs to be increased, liquid is simply pumped into each hose through the conduit, causing the air bladder in the corresponding support to inflate. The air bladder pushes the support rod outward relative to the support until the air bladder inflates to its limit. At this point, the support, support rod, and drainage tube body abut against each other, thus providing support for the drainage tube body. When the orifice diameter of the support ring needs to be decreased, liquid is simply sucked out of the air bladder through the conduit and hose. The two ends of the air bladder contract, causing the support rod to move inward relative to the support, thereby reducing the orifice diameter of the support ring. This method is simple and quick. After the orifice diameter of the support ring is reduced, the support structure can be easily removed, facilitating subsequent cleaning and maintenance. In addition, the movable ball limits the deflection angle of the support rod through the spherical cavity, preventing excessive deflection of the support rod and thus preventing excessive bending of the drainage tube body, which could cause blockage of the drainage tube body.

[0010] Furthermore, an annular groove is coaxially formed on the protrusion, and an annular block is coaxially rotatably connected within the annular groove. An annular groove is coaxially formed on the end face of the annular block facing the annular groove. Several spiral guide grooves are formed on the outer wall of the groove. A push plate is coaxially slidably connected within the groove. A telescopic rod is fixedly connected between the bottom of the annular groove and the push plate. Guide rods extending into the corresponding guide grooves are fixed around the periphery of the push plate. The telescopic structure includes a fixed sleeve fixed to the annular block and communicating with the groove. A movable rod is coaxially slidably arranged within the solid sleeve. One end of the movable rod is hinged to a corresponding support rod. A sealing plate is fixed to the other end of the movable rod and slidably connected to the fixed sleeve. Liquid is sealed between the sealing plate and the push plate. Protrusions are provided on the end faces of the support and the support rod.

[0011] In this solution, when the support structure is needed to clear the drainage tube body, the telescopic rod retracts, causing the push plate to move towards the boss. This reduces the pressure between the sealing plate and the push plate, causing the sealing plate to be attracted and moved towards the boss. This, in turn, causes the moving rod to move the support structure towards the boss. Then, the extension of the telescopic rod causes the push plate to reset, which in turn pushes the sealing plate, moving rod, and support structure back to their original positions via liquid. The reciprocating movement of the support structure clears the drainage tube body. When the push plate moves, the guide rod and guide groove work together to cause the annular block to rotate relative to the boss. This, in turn, causes the support ring to rotate relative to the drainage tube body via the telescopic structure. Combined with the protrusions on the support and the support rod, this better breaks up obstructing blood clots and tissue fragments, improving the clearing ability of the drainage tube body.

[0012] Furthermore, the fastening structure includes several clamping blocks arranged in a circumferential array. The thickness of the clamping blocks gradually increases from the base towards the body of the drainage tube. A fastening ring that is threadedly connected to the clamping blocks is fitted on the protrusion.

[0013] Furthermore, an elastic reset element is provided between the moving rod and the fixed sleeve.

[0014] Furthermore, the edges of the supports are all rounded.

[0015] Furthermore, a sealing ring is provided around the periphery of the boss.

[0016] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the supporting structure in an embodiment of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a longitudinal sectional view of an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 for Figure 4 Enlarged view of point C in the middle; Figure 7 This is a longitudinal sectional view of the support ring in an embodiment of the present invention.

[0018] The following components are labeled in the attached diagram: 1. Drainage tube body; 2. Base; 3. Boss; 4. Insertion tube; 5. Support; 6. Support rod; 7. Airbag; 8. Connecting ball; 9. Movable ball; 10. Support rod; 11. Flexible tube; 12. Conduit; 13. Annular block; 14. Guide groove; 15. Push plate; 16. Telescopic rod; 17. Guide rod; 18. Fixed sleeve; 19. Moving rod; 20. Sealing plate; 21. Protrusion; 22. Clamping block; 23. Fastening ring; 24. Elastic reset component. Detailed Implementation

[0019] like Figures 1-7 As shown: A pleural drainage tube designed to prevent blockage includes a drainage tube body 1, a base 2 connected to a pump, and a support structure for inserting the drainage tube body 1. The support structure includes several support rings with adjustable apertures, and foldable connecting structures between adjacent support rings. The base 2 has a hollow protrusion 3 that extends into the drainage tube body 1, and the protrusion 3 has several telescopic structures. Connecting structures at the ends of the protrusions are connected to the ends of the corresponding telescopic structures. The base 2 has a fastening structure for fixing the drainage tube body 1. One end of the drainage tube body 1 is connected to an insertion tube 4, and the insertion tube 4 has several drainage holes around its periphery.

[0020] In this design, the aperture of the support ring is reduced, and the drainage tube body 1 is fitted onto the support structure. The boss 3 is inserted into the end of the drainage tube body 1, and the drainage tube body 1 is fixed to the boss 3 by a fastening structure. The aperture of the support ring is then increased, and the support ring is used to support the inner wall of the drainage tube body 1 to prevent the drainage tube body 1 from being flattened by external pressure, which would cause the drainage tube body 1 to become blocked. The foldable connection structure allows adjacent support rings to swing relative to each other, thereby adapting to the bending of the drainage tube body 1.

[0021] The base 2 is installed on the pump, and the insertion tube 4 is inserted into the pleural cavity. The pump provides negative pressure to suction out the pleural effusion through the drainage hole. During the drainage process, when blood clots or tissue fragments cause blockage of the drainage tube body 1, the diameter of the support ring is reduced, and the support ring is moved axially along the drainage tube body 1 through the telescopic structure, thereby clearing the blockage of blood clots, tissue fragments, etc., without the need to replace the drainage tube body 1.

[0022] In this embodiment, the support ring includes several circumferentially distributed supports 5, and a support rod 6 is provided between adjacent supports 5. Both the supports 5 and the support rods 6 are arc-shaped, and the supports 5 are hollow. An airbag 7 with movable ends is fixed inside the support 5. The end of the support rod 6 extends into the corresponding support 5 and is connected to the airbag 7. The connecting structure includes several connecting balls 8 corresponding to the supports 5. Each connecting ball 8 has a spherical cavity at both ends. A movable ball 9 is movably arranged in each spherical cavity. Each movable ball 9 is fixed with a support rod 10 that is spherically hinged to the corresponding support 5. Several flexible tubes 11 are provided through the boss 3. The flexible tubes 11 sequentially pass through the corresponding support rod 10, support 5, movable ball 9, and connecting ball 8. Each flexible tube 11 is connected to the adjacent airbag 7. A conduit 12 connected to all the flexible tubes 11 is provided on the base 2. The connection between the conduit 12 and the flexible tubes 11 is a conventional technical means and therefore not described in detail.

[0023] In this design, when the aperture of the support ring needs to be enlarged, liquid is simply pumped into each hose 11 through the conduit 12, causing the airbag 7 in the corresponding support 5 to inflate. The airbag 7 pushes the support rod 6 outward relative to the support 5 until the airbag 7 inflates to its limit. At this point, the support 5, support rod 6, and drainage tube body 1 abut against each other, thus providing support for the drainage tube body 1. When the aperture of the support ring needs to be reduced, the liquid in the airbag 7 is simply drawn out through the conduit 12 and hose 11. The two ends of the airbag 7 contract and drive the support rod 6 inward relative to the support 5, thereby reducing the aperture of the support ring. This method is simple and quick. After the aperture of the support ring is reduced, the support structure can be easily removed, facilitating subsequent cleaning and maintenance. In addition, the movable ball 9 limits the deflection angle of the support rod 10 through the spherical cavity, preventing excessive deflection of the support rod 10 and thus preventing excessive bending of the drainage tube body 1, which could cause blockage of the drainage tube body 1.

[0024] In this embodiment, an annular groove is coaxially formed on the boss 3, and an annular block 13 is coaxially rotatably connected in the annular groove. An annular groove is coaxially formed on the end face of the annular block 13 facing the annular groove. Several spiral guide grooves 14 are formed on the outer wall of the groove. A push plate 15 is coaxially slidably connected in the groove. A telescopic rod 16 (an electric telescopic rod, which is a conventional technical means, is fixedly connected between the bottom of the annular groove and the push plate 15) is not described in detail. Guide rods 17 extending into the guide grooves 14 are fixed on all sides of the push plate 15. The telescopic structure includes a fixed sleeve 18 fixed on the annular block 13 and communicating with the groove. A moving rod 19 is coaxially slidably arranged in the solid sleeve. One end of the moving rod 19 is hinged to the corresponding support rod 6. The other end of the moving rod 19 is fixed with a sealing plate 20 that is slidably connected to the fixed sleeve 18. Liquid is sealed between the sealing plate 20 and the push plate 15. A protrusion 21 is provided on the end face of the support 5 and the support rod 6.

[0025] In this design, when the support structure is needed to clear the drainage tube body 1, the telescopic rod 16 retracts to move the push plate 15 toward the boss 3, reducing the pressure between the sealing plate 20 and the push plate 15. This causes the sealing plate 20 to be attracted and moved toward the boss 3, thereby causing the moving rod 19 to move the support structure toward the boss 3. Then, the extension of the telescopic rod 16 causes the push plate 15 to reset, and the liquid pushes the sealing plate 20, the moving rod 19, and the support structure back to their original positions. The reciprocating movement of the support structure clears the drainage tube body 1. When the push plate 15 moves, the push plate 15, through the cooperation of the guide rod 17 and the guide groove 14, causes the annular block 13 to rotate relative to the boss 3. This, in turn, causes the support ring to rotate relative to the drainage tube body 1 through the telescopic structure. Combined with the protrusions 21 on the support 5 and the support rod 6, this better breaks up the obstructing blood clots and tissue fragments, improving the clearing ability of the drainage tube body 1.

[0026] In this embodiment, the fastening structure includes a plurality of clamping blocks 22 arranged in a circumferential array. The thickness of the clamping blocks 22 gradually increases from the base 2 toward the drain tube body 1. A fastening ring 23 that is threadedly connected to the clamping blocks 22 is sleeved on the boss 3.

[0027] Simply rotate the fastening ring 23 in the forward direction. The fastening ring 23 causes the thicker end of the clamping block 22 to tightly fit the drainage tube body 1 against the boss 3, thus completing the connection and fixation between the drainage tube body 1 and the base 2. The whole operation process is simple and quick.

[0028] In this embodiment, an elastic reset member 24 is provided between the moving rod 19 and the fixed sleeve 18.

[0029] By setting the elastic reset element 24, the reset movement of the moving rod 19 relative to the fixed sleeve 18 is enhanced.

[0030] In this embodiment, the edges of the support 5 are all rounded.

[0031] The edges of the support 5 are rounded to reduce scratches on the drainage tube body 1 and prevent damage to the drainage tube body 1.

[0032] In this embodiment, a sealing ring is provided on the three sides of the boss (which is a conventional technical means, so it is not shown in the figure).

[0033] By setting a sealing ring, the sealing performance at the connection between the drainage tube body 1 and the boss 3 is enhanced, preventing pleural effusion from overflowing from the connection during drainage.

[0034] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A chest drainage tube that can prevent blockage, characterized in that: The device includes a drainage tube body, a base connected to a pump, and a support structure for extending into the drainage tube body. The support structure includes several support rings, each with an adjustable aperture, and adjacent support rings are connected by a foldable connecting structure. The base has a hollow boss extending into the drainage tube body, and the boss has several telescopic structures. A connecting structure at one end connects to the end of the corresponding telescopic structure. The base also has a fastening structure for securing the drainage tube body. One end of the drainage tube body is connected to an insertion tube, which has several drainage holes on its circumference. The support rings include several circumferentially distributed supports, with adjacent supports... Each seat is equipped with a support rod, both the seat and the support rod are arc-shaped, and the seat is hollow. An airbag with movable ends is fixed inside each seat, and the end of the support rod extends into the corresponding seat and connects to the airbag. The connecting structure includes several connecting balls corresponding to the seats, each connecting ball having a spherical cavity at both ends. A movable ball is movably disposed within each spherical cavity, and each movable ball is fixed with a support rod that is spherically hinged to the corresponding seat. Several flexible tubes are threaded through the protrusion, sequentially passing through the corresponding support rod, seat, movable ball, and connecting ball, and each tube communicates with an adjacent airbag. A conduit communicating with all the flexible tubes is provided on the base.

2. A chest drainage tube capable of preventing blockage according to claim 1, characterized in that: An annular groove is coaxially formed on the protrusion. An annular block is coaxially rotatably connected within the annular groove. An annular groove is coaxially formed on the end face of the annular block facing the annular groove. Several spiral guide grooves are formed on the outer wall of the groove. A push plate is coaxially slidably connected within the groove. A telescopic rod is fixedly connected between the bottom of the annular groove and the push plate. Guide rods extending into the corresponding guide grooves are fixed around the periphery of the push plate. The telescopic structure includes a fixed sleeve fixed to the annular block and communicating with the groove. A movable rod is coaxially slidably arranged within the solid sleeve. One end of the movable rod is hinged to a corresponding support rod. A sealing plate is fixed to the other end of the movable rod and slidably connected to the fixed sleeve. Liquid is sealed between the sealing plate and the push plate. Protrusions are provided on the end faces of the support and the support rod.

3. A chest drainage tube that can prevent blockage according to claim 2, characterized in that: The fastening structure includes several clamping blocks arranged in a circumferential array. The thickness of the clamping blocks gradually increases from the base towards the body of the drainage tube. A fastening ring that is threadedly connected to the clamping blocks is fitted on the protrusion.

4. A chest drainage tube that can prevent blockage according to claim 3, characterized in that: Both the moving rod and the fixed sleeve are provided with elastic reset components.

5. A chest drainage tube with anti-blockage capability according to claim 4, characterized in that: The edges of the supports are all rounded.

6. A chest drainage tube with anti-blockage capability according to claim 5, characterized in that: A sealing ring is provided around the boss.

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