Anti-clogging drainage catheter

Abstract

The utility model relates to medical technology field, concretely relates to drainage catheter technology field, especially a kind of anti-clogging drainage catheter, including main catheter, drainage end and operating end;The side wall of drainage end is provided with several drainage holes;Further include the mesh tube in drainage end, the mesh tube is the telescopic structure of radial dimension variable, with elasticity, it is close to the inner wall of drainage end in natural release state;The proximal end of the mesh tube is connected with recovery line, and the recovery line extends to the outside of drainage catheter;Mesh size on the mesh tube is less than the size of drainage hole, and the length of the mesh tube covers at least all drainage holes.The utility model in the drainage end installs mesh tube, can prevent drainage catheter blockage, improve its structural rigidity simultaneously;In addition, mesh tube can also be replaced, without implanting drainage catheter again, and its solution is very high in efficiency, lower in cost, and will not cause damage to patient.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, specifically to the field of drainage catheter technology, and in particular to an anti-blockage drainage catheter. Background Technology

[0002] Figure 1 The diagram shows a conventional drainage catheter, which includes a main tube 10, a drainage end 20 located at the distal end of the main tube 10, and an operating end 30 located at the proximal end of the main tube 10. The drainage end 20 has several drainage holes 21 on its sidewall, and the operating end 30 has a drainage interface 31 at its proximal end for connecting an external drainage bag, etc.

[0003] In clinical use, the aforementioned drainage catheter, with the main tube 10 inserted into the body, drains bodily fluids through the drainage hole 21 at the drainage end 20. Since bodily fluids typically contain semi-solid or solid substances, such as solidified or semi-solidified blood and semi-solid pus, these substances can cause blockage when they enter the drainage catheter. Currently, in clinical practice, if drainage catheter blockage occurs, the blocked catheter needs to be removed and a new one implanted. However, catheter implantation is a highly complex surgical procedure requiring the collaboration of many medical instruments; repeated implantations cause significant damage to the patient, and the costs are also high. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the technical defect in the prior art that requires the re-implantation of a drainage catheter after the drainage catheter becomes blocked.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an anti-blockage drainage conduit, comprising a main tube, a drainage end disposed at the distal end of the main tube, and an operating end disposed at the proximal end of the main tube; a plurality of drainage holes are provided on the side wall of the drainage end, and a drainage interface is provided at the proximal end of the operating end; it also includes a mesh tube located inside the drainage end, the mesh tube being a telescopic structure with variable radial dimensions and elasticity, which, in its naturally released state, closely adheres to the inner wall of the drainage end; a retrieval line is connected to the proximal end of the mesh tube, the retrieval line extending to the outside of the drainage conduit; the mesh size of the mesh tube is smaller than the size of the drainage holes, and the length of the mesh tube at least covers all the drainage holes.

[0006] In a preferred embodiment, the mesh tube is woven from filaments.

[0007] In a preferred embodiment, the filament is made of shape memory alloy, stainless steel, or polymer material.

[0008] In a preferred embodiment, the mesh tube is laser-engraved from a tube.

[0009] In a preferred embodiment, the pipe is made of metal or polymer material.

[0010] In a preferred embodiment, the mesh tube extends from the drainage end into the main tube.

[0011] Compared with the prior art, the anti-blockage drainage catheter of this utility model has the following advantages:

[0012] (1) Install a mesh tube inside the drainage end. Since the mesh is smaller than the drainage hole, it can prevent larger solid or semi-solid substances from entering the drainage tube, thereby preventing the drainage tube from becoming blocked.

[0013] (2) The mesh tube has a supporting function in the drainage end, which improves its structural rigidity. In particular, the mesh tube extends into the main pipe, which improves the bending resistance of the main pipe.

[0014] (3) When the mesh tube is blocked after a long period of use, it can be pulled out by the retrieval line and a new mesh tube can be inserted. There is no need to re-implant the drainage catheter. It is very efficient in solving the blockage, has a lower cost, and will not cause damage to the patient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a drainage catheter in the prior art; Figure 2 This is a schematic diagram of the drainage catheter in this embodiment; Figure 3 This is a schematic diagram of the structure of the drainage catheter when the mesh tube is inserted in this embodiment; Figure 4 for Figure 3 A cross-sectional view of the drainage end location shown in the diagram. Figure 5 This is a schematic diagram of a mesh tube installed in a delivery pipe. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0019] One type of anti-blockage drainage catheter in this embodiment, such as Figure 1 As shown, it includes a main tube 10, a drainage end 20 located at the distal end of the main tube 10, and an operating end 30 located at the proximal end of the main tube 10. The drainage end 20 has several drainage holes 21 on its side wall, and the operating end 30 has a drainage interface 31 located at its proximal end for connecting an external drainage bag, etc.

[0020] As a special feature of this embodiment, such as Figure 2 As shown, a mesh tube 40 is embedded within the drainage end 20 of the drainage catheter. The mesh tube 40 can be pre-installed within the drainage catheter and implanted into a predetermined location within the body along with the drainage catheter. Alternatively, the mesh tube 40 can be inserted into the drainage end 20 of the drainage catheter after it has been implanted into the predetermined location within the body.

[0021] A unique feature of this embodiment is that the mesh tube 40 is a telescopic structure with variable radial dimensions, possessing elasticity, and in its naturally released state, it fits tightly against the inner wall of the drainage end 20. The mesh size of the mesh tube 40 is smaller than the size of the drainage holes 21, and the length of the mesh tube 40 at least covers all the drainage holes 21. Based on this mesh tube 40 configuration, since the mesh size is smaller than the drainage holes 21, larger solid or semi-solid materials can be prevented from entering the drainage tube, thereby preventing blockage of the drainage conduit. Furthermore, the mesh tube provides support within the drainage end, enhancing its structural rigidity.

[0022] It should be noted that providing the mesh tube 40 only within the drainage end 20 is the preferred embodiment of this method. The mesh tube 40 can also extend from the drainage end 20 into the main tube 10 or even penetrate the main tube. Since the mesh tube 40 provides support, it can improve the rigidity of the drainage end and the main tube, enhancing their bending resistance. In clinical applications, the length of the mesh tube 40 can be configured as needed.

[0023] A unique feature of this embodiment is that the proximal end of the mesh tube 40 is connected to a retrieval line 41, which extends outside the drainage catheter. When the retrieval line 41 is stretched, the radial dimension of the mesh tube 40 decreases due to the stretching, allowing the mesh tube 40 to be pulled out of the drainage catheter. This design is advantageous because, after prolonged use of the drainage catheter, blockage may occur within the mesh tube 40. In this case, the mesh tube 40 can be pulled out via the retrieval line 41, and a new mesh tube 40 can be inserted. This operation eliminates the need for re-implantation of the drainage catheter, resulting in highly efficient blockage resolution, lower costs, and no harm to the patient.

[0024] Preferably, the mesh tube 40 in this embodiment is woven from filaments. The filaments are preferably made of shape memory alloy, stainless steel, or polymer materials.

[0025] Preferably, the mesh tube 40 in this embodiment is laser-engraved from a tube. The tube is preferably made of metal or polymer material.

[0026] It should be noted that the manufacturing of the aforementioned mesh tube 40 is a conventional technology in this field, and will not be described in detail here.

[0027] Preferably, in this embodiment, the step of inserting the mesh tube 40 into the drainage catheter is as follows:

[0028] S10, such as Figure 5 As shown, the mesh tube 40 is placed into the delivery tube 50. (As indicated...) Figure 3 As shown, an operating handle 51 is provided at the proximal end of the delivery pipe 50. Typically, the delivery pipe 50 is made of a material with a certain degree of rigidity.

[0029] S20, the delivery tube 50 equipped with the mesh tube 40 is pushed from the drainage port 31 of the drainage conduit into the main conduit 10 of the drainage conduit until the front end of the delivery tube 50 reaches the far end of the drainage end 20.

[0030] S30, such as Figure 3 , Figure 4 As shown, the pusher 60 is inserted into the delivery tube 50 from the proximal end of the operating handle 51 until the front end of the pusher 60 abuts against the mesh tube 40. At this time, with the pusher 60 stationary, there is room for the delivery tube to retract.

[0031] S40, retract the delivery pipe 50 by a length not less than the length of the mesh pipe 40. During the retraction of the delivery pipe, the pusher remains stationary, pressing the mesh pipe against the drainage end, thereby separating the delivery pipe from the mesh pipe.

[0032] S50, the delivery tube 50 and the pusher 60 are withdrawn from the drainage conduit together, and the mesh tube is retained in the drainage end, thereby completing the insertion of the mesh tube.

[0033] In summary, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-blocking drainage catheter, comprising a main tube, a drainage end disposed at the distal end of the main tube, and an operating end disposed at the proximal end of the main tube; wherein a plurality of drainage holes are provided on the sidewall of the drainage end, and a drainage interface is provided at the proximal end of the operating end; characterized in that, It also includes a mesh tube located inside the drainage end, the mesh tube being a telescopic structure with variable radial dimensions and elasticity, which fits tightly against the inner wall of the drainage end in its naturally released state; a retrieval line is connected to the proximal end of the mesh tube, the retrieval line extending to the outside of the drainage conduit; the mesh size on the mesh tube is smaller than the size of the drainage hole, and the length of the mesh tube at least covers all the drainage holes.

2. The anti-blockage drainage catheter according to claim 1, characterized in that, The mesh tube is woven from wire.

3. The anti-blockage drainage catheter according to claim 2, characterized in that, The wire material is made of shape memory alloy, stainless steel, or polymer material.

4. The anti-blockage drainage catheter according to claim 1, characterized in that, The mesh tube is laser-engraved from the tube material.

5. The anti-blockage drainage catheter according to claim 4, characterized in that, The pipe is made of metal or polymer material.

6. The anti-blockage drainage catheter according to any one of claims 1-5, characterized in that, The mesh tube extends from the drainage end into the main tube.

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