Dual lumen high pressure resistant catheter

Abstract

The utility model provides a kind of double-cavity high-pressure resistant catheter, it is related to medical instrument field, comprising: catheter main part, its inside is equipped with the anti-inclination diaphragm extending along the axial direction, the anti-inclination diaphragm separates the lumen into independent first chamber and second chamber;The thickness of the anti-inclination diaphragm is configured to resist deformation caused by fluid pressure when single-cavity flushing pipe, and the anti-inclination diaphragm and the inner wall of catheter main part are formed into anti-deviation structure by integrated molding.Formation anti-deviation structure and gradient density material are combined by reasonable design of the anti-inclination diaphragm of the application, single-cavity flushing pipe pressure can be effectively resisted, deviation deformation is avoided, guarantee lumen unobstructed, solve liquid delivery obstruction, in addition, optimized diaphragm structure supports single-cavity flushing pipe to maintain double-cavity unobstructed, reduce double-cavity synchronous operation, significantly improve clinical work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a dual-lumen high-pressure resistant catheter. Background Technology

[0002] In modern medicine, dual-lumen high-pressure resistant catheters are widely used in various treatment scenarios such as intravenous infusion, drug delivery, and blood collection. They can meet a variety of patient treatment needs while reducing the number of punctures and minimizing patient discomfort. However, existing dual-lumen high-pressure resistant catheters have several problems. Their internal anti-tilting diaphragm is typically designed to be thin. This structure is prone to displacement during flushing operations due to uneven flushing pressure or improper flushing techniques. Once the anti-tilting diaphragm shifts, it can narrow or even block the internal lumen, affecting the normal delivery of fluids or medications, and in severe cases, potentially delaying the patient's treatment. Furthermore, due to the tendency of the anti-tilt diaphragm to shift and become blocked, medical staff often need to flush both lumens simultaneously during flushing operations to ensure that both lumens remain unobstructed. This not only increases the number of steps and workload for medical staff and prolongs the operation time, but also increases the risk of operational errors due to the cumbersome procedures, reduces clinical work efficiency, and brings many inconveniences to the medical staff's operation process. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the present invention solves the problem of low clinical work efficiency caused by the need for medical staff to flush both lumens at the same time through the following technical solution.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A dual-lumen high-pressure resistant catheter, comprising: The catheter body has an axially extending anti-tilting diaphragm inside, which divides the lumen into an independent first chamber and a second chamber. The anti-tilt diaphragm is configured to resist deformation caused by fluid pressure during single-lumen flushing, and the anti-tilt diaphragm and the inner wall of the catheter body are integrally formed to form an anti-displacement structure.

[0005] Preferably, the anti-tilting diaphragm has an I-shaped cross-section, and its two sides are provided with arc-shaped surfaces at the parts that connect with the inner wall of the conduit body.

[0006] Preferably, the anti-tilting diaphragm is made of polyurethane or silicone rubber.

[0007] Preferably, the density of the central layer of the anti-tilt membrane is higher than that of the edge layer, forming a gradient density structure.

[0008] Preferably, the joints of the extension pipes of the first chamber and the second chamber are respectively provided with identification rings of different colors.

[0009] Preferably, a ball is connected to one side of the marking ring, and a holder is connected to the other side of the marking ring. The ball can be inserted into the holder to achieve positioning at the joint of the extension pipe between the first chamber and the second chamber.

[0010] Preferably, the ball is designed to be elastic.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The dual-lumen high-pressure resistant catheter provided in this application has a rationally designed anti-tilting diaphragm that combines an integrated molded anti-displacement structure with a gradient density material. This effectively resists the pressure of single-lumen flushing, prevents displacement and deformation, ensures unobstructed lumen flow, and solves the problem of obstructed fluid delivery. In addition, the optimized diaphragm structure supports single-lumen flushing to maintain dual-lumen patency, reduces the need for simultaneous dual-lumen operations, and significantly improves clinical work efficiency. Meanwhile, the different colored identification rings and the positioning structure of the ball and the card holder enable rapid identification of the chamber and precise fixation of the connector, greatly reducing the operational complexity and error risk for medical staff, and bringing dual convenience and protection to patient treatment and medical care. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial top view cross-sectional diagram of the catheter body of this utility model; Figure 3 This is a schematic diagram of the left-side cross-sectional structure of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention.

[0014] Drawing number explanation: 1. Catheter body; 2. First chamber; 3. Second chamber; 4. Anti-tilting diaphragm; 41. Arc-shaped surface; 6. Identification ring; 7. Ball holder; 71. Caliper holder. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0017] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0018] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0019] Please see Figure 1-4 A dual-lumen high-pressure resistant catheter includes: a catheter body 1, which has an anti-tilting diaphragm 4 extending axially inside, the anti-tilting diaphragm 4 dividing the lumen into an independent first chamber 2 and a second chamber 3; The anti-tilt diaphragm 4 is configured with a thickness to resist deformation caused by fluid pressure during single-lumen flushing, and the anti-tilt diaphragm 4 and the inner wall of the catheter body 1 are integrally formed to form an anti-displacement structure.

[0020] The dual-lumen high-pressure resistant catheter of this application is mainly composed of a catheter body 1, a first chamber 2, a second chamber 3, and an anti-tilting diaphragm 4. The following is a detailed description of its structure and working principle.

[0021] The catheter body 1 is made of medical-grade polymer material, possessing excellent flexibility and high-pressure resistance, enabling it to adapt to the complex environment within human blood vessels. The anti-tilting diaphragm 4 has a rationally designed thickness, configured to effectively resist deformation caused by fluid pressure during single-lumen flushing. Specifically, the thickness of the anti-tilting diaphragm 4 is optimized based on common clinical flushing pressures, ensuring that it will not excessively shift or deform due to fluid pressure on one side during single-lumen flushing, thus maintaining the independence and patency of both chambers. Simultaneously, the anti-tilting diaphragm 4 and the inner wall of the catheter body 1 are integrally molded to form an anti-displacement structure, resulting in a tight connection between the anti-tilting diaphragm 4 and the catheter body 1, further enhancing the stability of the anti-tilting diaphragm 4 and preventing displacement during flushing.

[0022] As a preferred embodiment, the anti-tilt diaphragm 4 has an I-shaped cross-section, which significantly improves its resistance to deformation. The I-shaped structure is narrower in the middle and wider on both sides, allowing for even pressure distribution and reducing localized stress concentration under fluid pressure. Furthermore, the sections where the anti-tilt diaphragm 4 connects to the inner wall of the conduit body 1 are provided with arc-shaped surfaces 41. These arc-shaped surfaces 41 ensure a smoother transition between the anti-tilt diaphragm 4 and the conduit body 1, reducing fluid resistance during flow and enhancing the strength of the connection, further preventing the anti-tilt diaphragm 4 from shifting under pressure. In terms of materials, the anti-tilt diaphragm 4 is preferably made of medical polymer materials such as polyurethane or silicone rubber. These materials have good biocompatibility and corrosion resistance, making them suitable for long-term implantation in the human body. Furthermore, the anti-tilt diaphragm 4 adopts a gradient density structure, with the density of the central layer being higher than that of the edge layers. This gradient density structure allows the central portion of the anti-tilt diaphragm 4 to withstand greater fluid pressure, while the edge portion has a certain degree of flexibility, facilitating connection with the inner wall of the catheter body 1, and also better adapting to the peristalsis and tortuosity of blood vessels. To facilitate the differentiation of the two chambers by medical staff, different colored identification rings 6 are installed at the joints of the extension tubing of the first chamber 2 and the second chamber 3. The identification rings 6 use eye-catching colors, such as red and blue, corresponding to the first chamber 2 and the second chamber 3 respectively. Medical staff can quickly identify the different chambers by color, avoiding operational errors. In addition, a retaining ball 7 is connected to one side of the marking ring 6, and a retainer 71 is connected to the other side of the marking ring 6. The structural design of the retaining ball 7 and the retainer 71 allows the retaining ball 7 to be inserted into the retainer 71, thereby achieving the positioning of the extension tube connectors of the first chamber 2 and the second chamber 3. When both chambers need to be used simultaneously, the cooperation of the retaining ball 7 and the retainer 71 can fix the two connectors together, facilitating operation by medical staff, reducing operation steps and time, and improving work efficiency.

[0023] Among them, the ball 7 is made of an elastic material. When it is inserted into the card holder 71 and subjected to external pressure, it can undergo elastic deformation, which improves the stability of the connection. When the external force is removed, it returns to its original shape. Working principle When using the dual-lumen high-pressure resistant conduit of this invention for single-lumen flushing, for example, flushing the first chamber 2, the flushing fluid enters from the connector of the first chamber 2. Under the action of fluid pressure, the anti-tilt diaphragm 4, due to its reasonable thickness configuration and I-shaped cross-sectional structure, can effectively resist the deformation caused by the fluid pressure. At the same time, the anti-tilt diaphragm 4 and the inner wall of the conduit body 1 are integrally formed with an anti-displacement structure, and the arc-shaped surfaces 41 and gradient density structure on both sides further enhance the stability of the anti-tilt diaphragm 4, preventing it from shifting. In this way, the second chamber 3 is not affected by the flushing pressure of the first chamber 2 and maintains a normal state, avoiding the problem of narrowing or blockage of the lumen channel caused by the displacement of the anti-tilt diaphragm 4.

[0024] When flushing of the dual-lumen tubing is required or both chambers are used simultaneously, medical staff can quickly distinguish between the first chamber 2 and the second chamber 3 using different colored identification rings 6. The two connectors are positioned and fixed using the cooperation of the ball valve 7 and the holder 71, facilitating simultaneous operation, reducing operational steps and workload, lowering the risk of operational errors, and improving clinical work efficiency.

[0025] In summary, the dual-lumen high-pressure resistant catheter of this invention effectively solves the problems of easy displacement and blockage of the anti-tilting diaphragm 4 and inconvenience of medical and nursing operations in existing dual-lumen high-pressure resistant catheters through the optimized design of the structure and material of the anti-tilting diaphragm 4, as well as the setting of the marking ring 6 and positioning structure, and has good clinical application value.

[0026] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A double-lumen high-pressure resistant catheter, characterized in that, include: The catheter body (1) has an anti-tilting diaphragm (4) extending axially inside, which divides the lumen into an independent first chamber (2) and a second chamber (3). The thickness of the anti-tilt diaphragm (4) is configured to resist deformation caused by fluid pressure during single-lumen flushing, and the anti-tilt diaphragm (4) and the inner wall of the conduit body (1) are integrally formed to form an anti-displacement structure.

2. The dual-lumen high-pressure resistant conduit according to claim 1, characterized in that: The anti-tilting diaphragm (4) has an I-shaped cross-section, and its two sides are connected to the inner wall of the conduit body (1) with arc-shaped surfaces (41).

3. The dual-lumen high-pressure resistant conduit according to claim 1, characterized in that: The anti-tilt diaphragm (4) is made of polyurethane or silicone rubber.

4. The dual-lumen high-pressure resistant conduit according to claim 1, characterized in that: The anti-tilt membrane (4) has a higher density in the central layer than in the edge layer, forming a gradient density structure.

5. A dual-lumen high-pressure resistant conduit according to claim 4, characterized in that: Different colored identification rings (6) are respectively provided at the joints of the extension pipes of the first chamber (2) and the second chamber (3).

6. A dual-lumen high-pressure resistant catheter according to claim 5, characterized in that: A ball (7) is connected to one side of the marking ring (6), and a tray (71) is connected to the other side of the marking ring (6). The ball (7) can be inserted into the tray (71) to achieve positioning at the joint of the extension pipe of the first chamber (2) and the second chamber (3).

7. A dual-lumen high-pressure resistant conduit according to claim 6, characterized in that: The ball (7) is designed to be elastic.

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