Anti-blocking knee joint flusher

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to an anti-blocking knee joint flusher which comprises a liquid inlet catheter and a liquid drainage catheter, the liquid inlet catheter is hollow, one end of the liquid inlet catheter is closed, the closed end of the liquid inlet catheter is used for penetrating into a joint cavity, and a plurality of liquid spraying holes are formed in the side face of the end of the liquid inlet catheter in the circumferential direction. The axes of the liquid spraying holes are obliquely arranged in the direction of the end of the liquid inlet guide pipe. The drainage catheter is hollow, the two ends of the drainage catheter are communicated, a plurality of through holes are formed in the side face of the end, used for penetrating into an articular cavity, of the drainage catheter, a supporting structure capable of expanding in the radial direction of the drainage catheter is further arranged on the side face of the end of the drainage catheter, and the supporting structure is hollow after being expanded. The knee joint continuous flushing device can achieve continuous flushing through liquid feeding on one side and liquid discharging on the other side, blockage can be prevented during flushing, and the efficiency and effect of continuous flushing of knee joints are improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to a knee joint irrigator that prevents clogging. Background Technology

[0002] When a joint becomes diseased, the synovial fluid increases, forming joint effusion, which causes joint pain and discomfort. In general, a small amount of effusion in common arthritis can be relieved through daily care, medication, and aspiration.

[0003] Treatment for patients with purulent infections of the knee joint requires draining the joint effusion and continuously flushing the knee joint cavity to stabilize and promote recovery. The conventional method involves aspirating the effusion using a needle and syringe, then injecting saline solution, repeating this process several times to replace and flush the fluid within the joint cavity. This procedure is cumbersome and inefficient. Furthermore, while methods exist that insert a standard medical catheter at the puncture site to flush and drain the fluid simultaneously, the synovial tissue within the joint cavity can easily become blocked, preventing proper drainage and hindering effective flushing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a clog-proof knee joint rinsing device that can achieve continuous rinsing with liquid entering from one side and draining from the other side, thereby improving the efficiency and effectiveness of continuous knee joint rinsing.

[0005] The present invention includes an inlet conduit and an outlet conduit. The inlet conduit is hollow and closed at one end. The closed end of the inlet conduit is used to penetrate into the joint cavity, and several spray holes are arranged circumferentially on the side of the end of the inlet conduit. The axes of the spray holes are all inclined along the direction of the end of the inlet conduit. The outlet conduit is hollow and open at both ends. The side of the outlet conduit used to penetrate into the joint cavity is provided with several through holes, and the side of the outlet conduit is also provided with a support structure that can expand radially along the outlet conduit. The support structure is hollow after expansion.

[0006] Furthermore, the closed end of the inlet conduit is provided with a diameter reduction section, which is used to connect and cooperate with the end of the outlet conduit that penetrates into the joint cavity.

[0007] Furthermore, a pull ring is connected to the middle of the liquid inlet conduit.

[0008] Furthermore, the region of the inlet conduit near the diameter reduction section transitions to the diameter reduction section via an inclined section.

[0009] Furthermore, several of the aforementioned spray holes are disposed on the inclined section.

[0010] Furthermore, the support structure is an airbag, and an air tube is connected to the airbag.

[0011] Furthermore, the airbag is circumferentially positioned on one side of the drainage conduit used to penetrate into the joint cavity, and the airbag is hollowed out at the positions of several through holes.

[0012] Furthermore, among the several through holes, the through holes arranged along the circumference of the drainage conduit form a group, and there are two or more groups of through holes arranged along the axial direction of the drainage conduit. The airbag includes an annular portion and several strip-shaped portions connected to the annular portion. The several strip-shaped portions and several through holes are staggered in the circumference of the drainage conduit. The area between the several strip-shaped portions forms the hollow area of ​​the airbag. The annular portion is located at one end of the several strip-shaped portions away from the inlet conduit.

[0013] Furthermore, the airbag is made of a stretchable elastic material and, when not inflated, adheres to the side of the drainage conduit.

[0014] Furthermore, a backwashing port is provided at the end of the drainage conduit away from the several through holes.

[0015] The beneficial effects of this invention are that it enables continuous flushing with liquid entering from one side and exiting from the other. The liquid is sprayed upwards along the drain conduit via several spray holes, which not only better flushes the joint cavity but also provides support to the tissues within the joint cavity. Combined with the expansion of the support structure, this provides further support to the tissues within the joint cavity radially along the drain conduit, effectively preventing the tissues from adhering to the surface of the drain conduit. Furthermore, the liquid within the joint cavity can flow normally into the drain conduit through the perforated area of ​​the support structure via several through-holes and then outwards, thus preventing conduit blockage and improving the efficiency and effectiveness of continuous flushing of the knee joint. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the anti-clogging knee joint irrigator of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the air bladder after inflation in the anti-clogging knee joint irrigator of this utility model.

[0018] In the diagram: 1. Inlet conduit; 11. Spray nozzle; 12. Diameter reduction section; 2. Drain conduit; 21. Through hole; 22. Backwash port; 3. Airbag; 31. Annular part; 32. Strip part; 4. Air tube; 5. Pull ring. Detailed Implementation

[0019] like Figures 1-2As shown, this utility model provides a clog-resistant knee joint irrigator, including an inlet conduit 1 and an outlet conduit 2. The inlet conduit 1 is hollow and closed at one end, with the unclosed end for liquid inflow, i.e., the inlet port. The closed end of the inlet conduit 1 is inserted into the joint cavity, and several spray holes 11 are circumferentially arranged on the side of this end of the inlet conduit 1. The axes of the spray holes 11 are all inclined along the direction of the end of the inlet conduit 1, so that the liquid is sprayed upward at an angle along the spray holes 11. The outlet conduit 2 is hollow and open at both ends. Several through holes 21 are provided on the side of the end of the outlet conduit 2 for liquid inflow into the outlet conduit 2. The side of the outlet conduit 2 is also provided with a support structure that can expand radially along the outlet conduit 2. The support structure is hollow after expansion. The other end of the outlet conduit 2 is used for liquid outflow, i.e., the outlet port.

[0020] In use, the inlet tube 1 is inserted into one side of the knee joint, and the outlet tube 2 is inserted into the other side of the knee joint, keeping the axis of the inlet tube 1 and the axis of the outlet tube 2 on the same straight line to achieve continuous flushing with fluid entering from one side and exiting from the other. Several spray holes 11 are angled, such as... Figure 2 As shown, the liquid is sprayed upwards along the drain conduit 2 through several spray holes 11. This not only allows for better flushing of the joint cavity, but also provides some support to the tissues within the joint cavity. Combined with the expansion of the support structure, this provides further support to the tissues inside the joint cavity in the radial direction of the drain conduit 2. This effectively prevents the tissues inside the joint cavity from sticking to the surface of the drain conduit 2. Furthermore, the liquid inside the joint cavity can flow normally into the drain conduit 2 through several through holes 21 via the hollow area of ​​the support structure and then be discharged outwards, thereby preventing pipe blockage and improving the efficiency and effectiveness of continuous flushing of the knee joint.

[0021] The closed end of the inlet conduit 1 is provided with a diameter reduction section 12, which is used to connect with the end of the outlet conduit 2 that enters the joint cavity. This facilitates keeping the axis of the inlet conduit 1 and the axis of the outlet conduit 2 on the same straight line during the flushing process, and also facilitates maintaining the relative posture and relative position of the inlet conduit 1 and the outlet conduit 2.

[0022] Preferably, the inlet tube 1 is connected to a pull ring 5 by a rope in the middle. Pulling the pull ring 5 moves the inlet tube 1, separating the inlet tube 1 from the outlet tube 2, so that the inlet tube 1 and the outlet tube 2 can be pulled out from both sides of the knee joint after rinsing.

[0023] The area of ​​the inlet conduit 1 near the diameter reduction section 12 is transitioned to the diameter reduction section 12 by an inclined section, that is, the diameter reduction section 12 and the normal diameter section of the inlet conduit 1 are smoothly transitioned, reducing the resistance when the inlet conduit 1 is inserted into the knee joint.

[0024] The arrangement of several spray holes 11 on the inclined section makes it easier to form inclined spray holes 11 and an upwardly inclined spray path.

[0025] The supporting structure is an airbag 3, to which an air tube 4 is connected. A connector is located at the end of the air tube 4 opposite to the airbag 3. Gas or liquid is injected into the airbag 3 through the connector, causing the airbag 3 to inflate. Because the airbag 3 is smaller in volume when not inflated and its material is relatively soft, it does not significantly increase or excessively increase the outer diameter of the drainage conduit 2, reducing the difficulty of inserting the drainage conduit 2 into the knee joint.

[0026] The airbag 3 is circumferentially positioned on one side of the drainage conduit 2 that is inserted into the joint cavity, and the airbag 3 is hollowed out corresponding to the positions of several through holes 21. Based on this design, after the airbag 3 inflates, it can effectively form circumferential support on the side of the drainage conduit 2, providing better support, while avoiding the area of ​​several through holes 21 and not affecting the conduction of several through holes 21.

[0027] Specifically, such as Figure 1 and Figure 2 As shown, among the several through holes 21, the through holes 21 arranged circumferentially along the drainage conduit 2 form a group, and there are two or more groups of through holes 21 arranged axially along the drainage conduit 2. Figure 2 As shown, the airbag 3 includes an annular portion 31 and several strip-shaped portions 32 connected to and communicating with the annular portion 31. The strip-shaped portions 32 and several through holes 21 are staggered in the circumferential direction of the drainage conduit 2. The area between the strip-shaped portions 32 is the hollow area of ​​the airbag 3. The annular portion 31 is located at one end of the strip-shaped portions 32 away from the drainage conduit 1. The air tube 4 is connected to the annular portion 31. In use, the connector of the air tube 4 is located outside the knee joint.

[0028] The airbag 3 is made of a stretchable elastic material, such as rubber, silicone or silicone. When not inflated, the surface of the airbag 3 is flat and it is attached to the side of the drainage conduit 2, which makes it easier for the end of the drainage conduit 2 to be smoothly inserted into the knee joint.

[0029] The drain conduit 2 is provided with a backwash port 22 at one end away from the several through holes 21. When some through holes 21 are blocked by tissue debris detached from the joint, the flushing is paused and liquid is introduced in reverse through the backwash port 22 along the drain conduit 2 for backwashing to clear the blockage at the position of the through hole 21 and restore its flow capacity. Then the flushing can continue. There is no need to pull out the drain conduit 2 for cleaning, which improves the reliability and efficiency of continuous flushing of the knee joint.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0031] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A clog-resistant knee flushing device, characterized in that, The device includes an inlet conduit (1) and a drain conduit (2). The inlet conduit (1) is hollow and closed at one end. The closed end of the inlet conduit (1) is used to penetrate into the joint cavity. Several spray holes (11) are arranged circumferentially on the side of the end of the inlet conduit (1). The axes of the several spray holes (11) are all inclined along the direction of the end of the inlet conduit (1). The drain conduit (2) is hollow and through at both ends. Several through holes (21) are arranged on the side of the end of the drain conduit (2) used to penetrate into the joint cavity. The side of the end of the drain conduit (2) is also provided with a support structure that can expand radially along the drain conduit (2). The support structure is hollow after expansion.

2. The anti-clogging knee irrigator as described in claim 1, characterized in that, The inlet conduit (1) has a diameter reduction section (12) at one closed end, which is used to connect with the end of the outlet conduit (2) that enters the joint cavity.

3. The anti-clogging knee irrigator as described in claim 2, characterized in that, A pull ring (5) is connected to the middle of the liquid inlet conduit (1).

4. The anti-clogging knee irrigator as described in claim 2 or 3, characterized in that, The area of ​​the inlet conduit (1) near the diameter reduction section (12) is transitioned to the diameter reduction section (12) by an inclined section.

5. The anti-clogging knee irrigator as described in claim 4, characterized in that, Several of the spray holes (11) are provided on the inclined section.

6. The anti-clogging knee irrigator as described in any one of claims 1-3 and 5, characterized in that, The supporting structure is an airbag (3), and an air tube (4) is connected to the airbag (3).

7. The anti-clogging knee flushing device as described in claim 6, characterized in that, The airbag (3) is arranged circumferentially on one side of the drain tube (2) for insertion into the joint cavity, and the airbag (3) is hollowed out at the positions of several through holes (21).

8. The anti-clogging knee flushing device as described in claim 7, characterized in that, Among the several through holes (21), the through holes (21) arranged along the circumference of the drain conduit (2) are a group. There are two or more groups of through holes (21) arranged along the axial direction of the drain conduit (2). The airbag (3) includes an annular part (31) and several strip parts (32) connected and communicating with the annular part (31). The several strip parts (32) and several through holes (21) are arranged alternately in the circumference of the drain conduit (2). The area between the several strip parts (32) forms the hollow area of ​​the airbag (3). The annular part (31) is located at one end of the several strip parts (32) away from the inlet conduit (1).

9. The anti-clogging knee flusher as described in claim 7 or 8, characterized in that, The airbag (3) is made of a stretchable elastic material and is attached to the side of the drainage conduit (2) when it is not inflated.

10. The anti-clogging knee irrigator as described in any one of claims 1-3, 5, 7, and 8, characterized in that, The drain pipe (2) is provided with a backwashing port (22) at one end away from the several through holes (21).

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