A cord holder with an extension post

Abstract

The present application relates to a silicone wire fixer with an extension column. The silicone wire fixer with an extension column of the present application can be integrally formed by molding with silicone, and the inner diameter of the transverse through hole is smaller than the outer diameter of the electrode, so that the electrode and the wire fixer are in interference fit and thus do not move relative to each other. One end of the wire fixer is an open extension column, and the wire fixer is implanted in the subcutaneous muscle tissue. Due to the friction, the wire fixer and the muscle tissue will not move relative to each other, achieving the effect of fixing the electrode and protecting the electrode, so that a suture is not needed for fixation.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and in particular relates to a wire fastener with an extension post. Background Technology

[0002] Implantable spinal cord stimulator systems are commonly used clinically to treat chronic and intractable pain. In this system, the electrical signals generated by the spinal cord stimulator are conducted to the spinal nerves via extension leads and electrodes, achieving optimal analgesia. The electrodes are implanted in the epidural space and subcutaneously within the spine. It is crucial to ensure that the electrodes do not shift vertically within the epidural space, as this could affect the treatment outcome; therefore, electrode fixation is paramount. A suture fastener is used to secure the electrodes, fixing them to the supraspinous ligament or fascia.

[0003] In the prior art, electrodes can be fixed by means of sutures, screw-locking sutures, etc., or by placing a pressure relief ring inside the body to prevent electrode displacement, as in Chinese utility model patent document CN213941861U.

[0004] Existing silicone suture fasteners often employ a two-wing or protruding structure, which is then fixed to the fascia of the body using sutures. The disadvantage of this method is that the electrode and the fastener rely entirely on the sutures for tightness, which makes it difficult to tighten and may damage the fastener if it is tightened too much. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a solution that addresses the shortcomings of existing technologies.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A silicone wire fastener with an extension post, made entirely of silicone, comprising:

[0008] A cylindrical body, wherein the cylindrical body has a transverse through hole in the middle and the inner wall of the transverse through hole is smooth;

[0009] Several extension columns are provided at one end of the cylindrical body;

[0010] The inner diameter of the transverse through hole forms an interference fit with the inserted electrode.

[0011] Preferably, in the silicone wire fastener with extension post of this invention, the inner diameter of the transverse through hole is 0.05 mm to 0.15 mm smaller than the outer diameter of the electrode.

[0012] Preferably, in the silicone wire fastener with extension posts of this invention, the extension posts extend radially away from the center of the cylindrical body.

[0013] Preferably, in the silicone wire fastener with extension post of this utility model, the cylindrical body consists of a first conical segment, a cylindrical segment, and a second conical segment from one end to the other, and the extension post is disposed in the second conical segment.

[0014] Preferably, in the silicone wire fastener with extension post of this utility model, the cross-sectional area of ​​the extension post gradually decreases from the end near the cylindrical body to the end away from the cylindrical body.

[0015] Preferably, the silicone wire fastener with extension posts of this utility model has 3 to 6 extension posts.

[0016] Preferably, the silicone wire fastener with extension posts of this invention has several protrusions on the surface of the extension posts.

[0017] Preferably, in the silicone wire fastener with extension post of this utility model, the longitudinal section of the transverse through hole is elliptical, the major axis of the transverse through hole is greater than the outer diameter of the electrode, and the minor axis of the transverse through hole is smaller than the outer diameter of the electrode.

[0018] The beneficial effects of this utility model are:

[0019] This utility model discloses a silicone suture holder with an extension post, which can be integrally molded using silicone molds. The inner diameter of the transverse through-hole is smaller than the outer diameter of the electrode, allowing for an interference fit between the electrode and the suture holder to prevent mutual movement. One end of the suture holder is an open extension post. When the suture holder is implanted into the subcutaneous muscle tissue, due to friction, the suture holder and the muscle tissue will not move relative to each other, achieving the effect of fixing and protecting the electrode. Therefore, there is no need to use sutures for fixation. Attached Figure Description

[0020] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a front view of a silicone wire fastener with an extension post according to an embodiment of this application;

[0022] Figure 2 This is a cross-sectional view of a silicone wire fastener with an extension post according to an embodiment of this application;

[0023] Figure 3 This is a perspective view of a silicone wire fastener with an extension post according to an embodiment of this application;

[0024] Figure 4 This is a left view of a silicone wire fastener with an extension post according to an embodiment of this application;

[0025] Figure 5 This is a right view of a silicone wire fastener with an extension post according to an embodiment of this application;

[0026] Figure 6This is a perspective view of an extension column with protrusions according to an embodiment of this application.

[0027] The attached figures are labeled as follows:

[0028] 1 cylindrical body;

[0029] 2. Extended column;

[0030] 3. Horizontal through hole;

[0031] 11. First conical segment;

[0032] 12 cylindrical segments;

[0033] 13. Second conical segment. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0035] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example

[0039] This embodiment provides a silicone wire fastener with an extension post, the entire assembly of which is made of silicone, such as... Figure 1-5 As shown, it includes:

[0040] A cylindrical body 1, wherein the cylindrical body 1 has a transverse through hole 3 in the middle, and the inner wall of the transverse through hole 3 is smooth;

[0041] Several extension columns 2 are provided at one end of the cylindrical body 1;

[0042] The inner diameter of the transverse through hole 3 forms an interference fit with the inserted electrode.

[0043] The silicone suture holder with an extension post in this embodiment can be integrally molded using silicone molds. The inner diameter of the transverse through-hole 3 is smaller than the outer diameter of the electrode, allowing for an interference fit between the electrode and the suture holder to prevent them from moving relative to each other. One end of the suture holder is an open extension post. When the suture holder is implanted into the subcutaneous muscle tissue, due to friction, the suture holder and the muscle tissue will not move relative to each other, achieving the effect of fixing and protecting the electrode. Therefore, there is no need to use sutures for fixation.

[0044] Furthermore, the inner diameter of the transverse through hole 3 is 0.05 mm to 0.15 mm smaller than the outer diameter of the electrode, such as 0.05 mm, 0.1 mm, or 0.15 mm. This makes it easier for the electrode to pass through the transverse through hole 3, while still providing a good fixing effect.

[0045] Furthermore, the extension column 2 extends radially away from the center of the cylindrical body 1. The extension column 2 extends outward, and when viewed from the side, the extension column 2 extends beyond the outer surface of the cylindrical body 1.

[0046] The inner wall surfaces of the cylindrical body 1 and the transverse through hole 3 are smooth.

[0047] Furthermore, the cylindrical body 1 consists of a first conical segment 11, a cylindrical segment 12, and a second conical segment 13 from one end to the other, with the extension column 2 disposed in the second conical segment 13. Dividing it into multiple segments facilitates demolding. At the openings at both ends of the cylindrical body 1, the diameter of the openings gradually increases to facilitate easier passage of the electrodes.

[0048] Furthermore, the cross-sectional area of ​​the extension column 2 gradually decreases from the end near the cylindrical body 1 to the end away from the cylindrical body 1. This is done to facilitate demolding.

[0049] Furthermore, the number of extension columns 2 is 4 to 6. For example, Figure 1 There are 5 in the middle, but it can also be 4 or 6.

[0050] Furthermore, the surface of the extension post 2 has several protrusions, such as... Figure 6As shown. The protrusions can increase the friction with the muscle.

[0051] Based on the above-described preferred embodiments according to this application, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A silicone wire fastener with an extension post, characterized in that, The entire structure is made of silicone and includes: A cylindrical body (1) has a transverse through hole (3) in the middle, and the inner wall of the transverse through hole (3) is smooth. Several extension columns (2) are provided at one end of the cylindrical body (1); The inner diameter of the transverse through hole (3) forms an interference fit with the inserted electrode.

2. The silicone wire fastener with extension post according to claim 1, characterized in that, The inner diameter of the transverse through hole (3) is 0.05 mm to 0.15 mm smaller than the outer diameter of the electrode.

3. The silicone wire fastener with extension post according to claim 1, characterized in that, The extension column (2) extends radially away from the center of the cylindrical body (1).

4. The silicone wire fastener with extension post according to claim 1, characterized in that, The cylindrical body (1) consists of a first conical segment (11), a cylindrical segment (12), and a second conical segment (13) from one end to the other, and the extension column (2) is disposed in the second conical segment (13).

5. The silicone wire fastener with extension post according to claim 1, characterized in that, The cross-sectional area of ​​the extension column (2) gradually decreases from the end near the cylindrical body (1) to the end away from the cylindrical body (1).

6. The silicone wire fastener with extension post according to claim 1, characterized in that, The number of extension columns (2) is 3 to 6.

7. The silicone wire fastener with extension post according to claim 1, characterized in that, The surface of the extension column (2) has several protrusions.

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