Disposable drainage catheter

Abstract

The utility model belongs to the technical field of medical equipment, and particularly discloses a disposable drainage catheter which comprises a needle cylinder, the end of the needle cylinder is fixedly communicated with a connector, the outer surface of the connector is movably sleeved with a first flow guide tube, and the needle cylinder is provided with a hooping mechanism used for stably sleeving the first flow guide tube on the outer surface of the connector. The end, away from the connector, of the first flow guide pipe is detachably provided with a second flow guide pipe through a connecting mechanism, and the hooping mechanism comprises a support fixedly connected to the outer surface of the needle cylinder. According to the disposable drainage catheter, it can be ensured that the first drainage tube is stably arranged on the connector in a sleeving mode through the hooping mechanism and the shape memory hoop piece in a clamping mode, the connection stability between the drainage catheter and the connector is greatly improved through the design, and the risk that the drainage catheter falls off when drainage pressure is large or the drainage catheter is pulled by mistake is avoided; and the safety of the system under the conditions of high pressure and poor use is obviously improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and specifically relates to a disposable drainage catheter. Background Art

[0002] A drainage catheter is a medical device used to help drain body fluids or gases from inside the human body to the outside to maintain a normal physiological state or treat diseases. During clinical practice and wound trauma, medical staff need to perform drainage operations on the fluids on the wound through corresponding drainage catheters.

[0003] Currently, when a drainage catheter is sleeved on the connector of a drainage syringe, generally, the elastic expansion force of the drainage catheter made of silicone is used to sleeve it on the connector of the drainage syringe. The connection stability of this kind of drainage catheter is insufficient. When the drainage pressure is relatively high or the drainage catheter and the syringe are accidentally pulled, the drainage catheter may be separated from the syringe, resulting in cross-infection caused by liquid leakage, posing certain potential safety hazards. Utility Model Content

[0004] In view of this, the purpose of the present utility model is to solve the shortcomings in the background art and propose a disposable drainage catheter to solve the problems existing in the prior art.

[0005] To achieve the above object, the present utility model provides a disposable drainage catheter, including a syringe. A connector is fixedly communicated with the end of the syringe. A first drainage tube is movably sleeved on the outer surface of the connector. A tightening mechanism is arranged on the syringe for stably sleeving the first drainage tube on the outer surface of the connector. One end of the first drainage tube away from the connector is detachably installed with a second drainage tube through a connection mechanism.

[0006] Preferably, the tightening mechanism includes a bracket fixedly connected to the outer surface of the syringe. A shape memory hoop is arranged on the outer surface of the bracket. Through the tightening mechanism, the first drainage tube can be relatively stably sleeved on the connector of the syringe.

[0007] Preferably, a rubber tooth sleeve is arranged at one end of the outer surface of the shape memory hoop, and a rubber tooth plate is arranged at the end of the outer surface of the shape memory hoop away from the rubber tooth sleeve.

[0008] Preferably, the connection mechanism includes a fixed ring plate fixedly connected to the first drainage tube away from the connector. A connecting pipe is fixedly connected to the outer surface of the fixed ring plate, and the connecting pipe is fixedly communicated with the first drainage tube. Through the connection mechanism, the first drainage tube and the second drainage tube can be quickly connected, thereby extending the length of the drainage tube to meet different drainage requirements.

[0009] Preferably, a rubber corrugated plate is arranged on the outer surface of the connecting pipe, and a sealing ring is arranged on the outer surface of the fixed ring plate.

[0010] Preferably, a connecting rubber sleeve is fixedly connected to one end of the second diversion tube close to the connecting tube. A corrugated groove is formed inside the connecting rubber sleeve, and a sealing groove is formed at one end of the connecting rubber sleeve close to the fixing ring plate of the connecting tube.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. For this disposable drainage catheter, through the tightening mechanism, the shape memory hoop can ensure that the first diversion tube is firmly sleeved on the connector in the form of a clamp. This design greatly improves the connection stability between the drainage catheter and the connector, avoiding the risk of the drainage catheter falling off when the drainage pressure is large or there is accidental pulling, and significantly enhancing the safety of the system under high pressure and adverse usage conditions.

[0013] 2. For this disposable drainage catheter, the drainage catheter adopts a connecting mechanism design with adjustable length. Users can adjust the length of the diversion tube according to actual drainage needs. This flexibility makes the drainage process more accurate and effective, while reducing the risk of unnecessary liquid leakage, especially important when a longer drainage catheter is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of this application;

[0015] Figure 2 It is a schematic diagram of the surface structure of the bracket of this application;

[0016] Figure 3 It is a schematic diagram of the surface structure of the fixing ring plate of this application;

[0017] Figure 4 It is a schematic diagram of the surface structure of the connecting rubber sleeve of this application.

[0018] Among them: 1. Syringe; 2. Connector; 3. First diversion tube; 4. Bracket; 5. Shape memory hoop; 6. Rubber tooth sleeve; 7. Rubber tooth plate; 8. Fixing ring plate; 9. Connecting tube; 10. Gelatinous corrugated plate; 11. Sealing ring; 12. Second diversion tube; 13. Connecting rubber sleeve; 14. Corrugated groove; 15. Sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0020] Please refer to Figures 1-4, A disposable drainage catheter, comprising a syringe 1, a connector 2 fixedly connected to the end of the syringe 1, a first drainage tube 3 movably sleeved on the outer surface of the connector 2, and a tightening mechanism arranged on the syringe 1 for stably sleeving the first drainage tube 3 on the outer surface of the connector 2. One end of the first drainage tube 3 far from the connector 2 is detachably installed with a second drainage tube 12 through a connecting mechanism.

[0021] Through the above technical solution, both the first drainage tube 3 and the second drainage tube 12 in the drainage catheter are for one-time use. The first drainage tube 3 and the second drainage tube 12 can be connected relatively stably and sealed through the connecting mechanism, and the drainage tube can be stably sleeved on the connector 2 through the tightening mechanism.

[0022] Specifically, the tightening mechanism includes a bracket 4 fixedly connected to the outer surface of the syringe 1, and a shape memory hoop 5 is arranged on the outer surface of the bracket 4.

[0023] Through the above technical solution, the shape memory hoop 5 is made of shape memory alloy material and has excellent deformation recovery ability.

[0024] Specifically, one end of the outer surface of the shape memory hoop 5 is provided with a rubber tooth sleeve 6, and one end of the outer surface of the shape memory hoop 5 far from the rubber tooth sleeve 6 is provided with a rubber tooth plate 7.

[0025] Through the above technical solution, when the rubber tooth plate 7 gradually penetrates into the rubber tooth sleeve 6, the shape memory hoop 5 can be gradually contracted.

[0026] Specifically, the connecting mechanism includes a fixed ring plate 8 fixedly connected to the first drainage tube 3 far from the connector 2. A connecting pipe 9 is fixedly connected to the outer surface of the fixed ring plate 8, and the connecting pipe 9 is fixedly communicated with the first drainage tube 3.

[0027] Through the above technical solution, when the connecting pipe 9 is inserted into the connecting rubber sleeve 13, the gelatinous corrugated plate 10 and the corrugated groove 14 need to be staggered. After the connecting pipe 9 is completely inserted, the gelatinous corrugated plate 10 and the corrugated groove 14 are then engaged.

[0028] Specifically, a gelatinous corrugated plate 10 is arranged on the outer surface of the connecting pipe 9, and a sealing ring 11 is arranged on the outer surface of the fixed ring plate 8.

[0029] Through the above technical solution, the gelatinous corrugated plate 10 and the corrugated groove 14 are just completely engaged, and the sealing ring 11 can be completely and just embedded into the sealing groove 15.

[0030] Specifically, one end of the second drainage tube 12 close to the connecting pipe 9 is fixedly connected with a connecting rubber sleeve 13. A corrugated groove 14 is opened inside the connecting rubber sleeve 13, and a sealing groove 15 is opened at one end of the connecting rubber sleeve 13 close to the fixed ring plate 8 of the connecting pipe 9.

[0031] Through the above technical solution, the engagement of the sealing ring 11 with the sealing groove 15 can maintain a stable and good seal between the connecting rubber sleeve 13 and the fixing ring plate 8 .

[0032] Working principle: During the use of the drainage catheter, the first drainage tube 3 and the second drainage tube 12 are both disposable. During use, the length of the drainage tube can be adjusted according to the drainage needs. That is, when a longer drainage catheter is needed for drainage, the first drainage tube 3 and the second drainage tube 12 can be sealed and connected through the connecting mechanism, that is, the connecting tube 9 is inserted into the connecting rubber sleeve 13, during which the rubber corrugated plate 10 and the corrugated groove 14 are staggered, and then the connecting rubber sleeve 13 is rotated so that the rubber corrugated plate 10 and the corrugated groove 14 are just embedded, and at the same time, the sealing ring 11 will be completely embedded in the sealing groove 15, so that the connecting rubber sleeve 13 and the fixing ring plate 8 is a relatively stable and sealed connection. After the first guide tube 3 is connected to the second guide tube 12, the overall length of the guide tube is extended. Then the first guide tube 3 can be put on the connector 2 of the syringe 1, and the rubber tooth plate 7 is gradually inserted into the rubber tooth sleeve 6. During this process, the shape memory hoop 5 will gradually shrink until the shape memory hoop 5 firmly puts the first guide tube 3 on the connector 2. This method of putting the first guide tube 3 in the form of a clamp can enhance the sleeve stability of the first guide tube 3, avoid the direct detachment of the drainage tube and the connector 2 when the drainage pressure is large or the drainage tube is pulled by mistake, and reduce the risk of cross infection caused by liquid leakage.

[0033] In summary, the drainage catheter system in the present application significantly improves safety and efficiency in medical environments by enhancing connection stability, improving operational flexibility, and reducing the risk of cross-infection, providing patients and medical staff with a more reliable drainage solution.

[0034] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A disposable drainage catheter, comprising a syringe (1), characterized in that: A connector (2) is fixedly connected to the end of the syringe barrel (1). A first diversion tube (3) is movably sleeved on the outer surface of the connector (2). A tightening mechanism is provided on the syringe barrel (1) for stably sleeving the first diversion tube (3) on the outer surface of the connector (2). The end of the first diversion tube (3) far from the connector (2) is detachably installed with a second diversion tube (12) through a connecting mechanism.

2. The disposable drainage catheter according to claim 1, characterized in that: The tightening mechanism includes a bracket (4) fixedly connected to the outer surface of the syringe barrel (1), and a shape memory hoop (5) is arranged on the outer surface of the bracket (4).

3. The disposable drainage catheter according to claim 2, characterized in that: One end of the outer surface of the shape memory hoop (5) is provided with a rubber tooth sleeve (6), and the end of the outer surface of the shape memory hoop (5) far from the rubber tooth sleeve (6) is provided with a rubber tooth plate (7).

4. The disposable drainage catheter according to claim 1, wherein: The connecting mechanism includes a fixed ring plate (8) fixedly connected to the end of the first diversion tube (3) far from the connector (2). A connecting pipe (9) is fixedly connected to the outer surface of the fixed ring plate (8), and the connecting pipe (9) is fixedly communicated with the first diversion tube (3).

5. A disposable drainage catheter according to claim 4, characterized in that: A gelatinous corrugated plate (10) is arranged on the outer surface of the connecting pipe (9), and a sealing ring (11) is arranged on the outer surface of the fixed ring plate (8).

6. The disposable drainage catheter according to claim 1, characterized in that: One end of the second diversion tube (12) close to the connecting pipe (9) is fixedly connected with a connecting rubber sleeve (13). A corrugated groove (14) is formed inside the connecting rubber sleeve (13), and a sealing groove (15) is formed at one end of the connecting rubber sleeve (13) close to the fixed ring plate (8) of the connecting pipe (9).

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