Tenosynovitis operating hook needle

Abstract

The utility model relates to a kind of tenosynovitis operation hook needle, including needle handle and the needle stem being located on needle handle, the needle stem has the hook-shaped hook cutter head, hook cutter head has hook cutting blade edge, hook cutter head is constituted hook shape using the U-shaped gap of one opening towards oblique needle stem tail end one end on the head section lateral wall of needle stem, U-shaped gap includes the arc hook mouth in bottom, arc hook mouth is connected with transition slope wall towards needle stem tail end one end, and blade edge forming wall is symmetrically arranged in the arc hook mouth transverse two sides of U-shaped gap, and the blade edge forming wall is formed hook cutting blade edge by thinning the rim of arc hook mouth, the bottom wall of the head section end portion of needle stem corresponds with hook cutting blade edge position, it is oblique to be inclined upwards, to form tip in the head section end portion of needle stem.Cutter head structure design is reasonable, and the advantages that operation is safe and reliable.

Description

Technical Field

[0001] This utility model relates to medical devices, specifically a surgical hook for tenosynovitis. Background Technology

[0002] Tenosynovitis is a typical "lifestyle disease." Early intervention (rest + physical therapy) can often cure it, but neglecting it can easily lead to chronic pain or functional impairment. If conservative treatment is ineffective, timely surgical release can effectively restore function.

[0003] The most common surgical treatment for tenosynovitis is the minimally invasive needle knife technique, which involves a surgical skin incision. The advantages of minimally invasive surgery for tenosynovitis include small incision and rapid postoperative recovery. However, the tenosynovitis surgical hook (small needle knife) used in current minimally invasive surgery has the disadvantage of unreasonable blade design, resulting in inconvenient operation or compromised safety. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a surgical hook for tenosynovitis with a reasonable blade structure design and safe and reliable surgical operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A surgical hook for tenosynovitis includes a handle and a shaft on the handle. The shaft has a hook-shaped cutting head with a cutting edge. The hook head is characterized by having a U-shaped notch on the head section of the shaft, with an opening facing the tail end. The U-shaped notch includes an arc-shaped hook opening at the bottom. A transitional ramp wall connects the arc-shaped hook opening to the tail end of the shaft. Cutting edge forming walls are symmetrically arranged on both sides of the arc-shaped hook opening of the U-shaped notch. The edges of the arc-shaped hook opening are thinned by the two cutting edge forming walls to form the cutting edge. The bottom wall at the head section of the shaft, corresponding to the position of the cutting edge, is inclined upwards, thus forming a sharp point at the head section of the shaft.

[0006] Preferably, the tip of the needle is a blunt end with a rounded shape, and the bottom wall of the head section of the needle bar is rounded.

[0007] Preferably, the head section of the needle bar is flattened by two symmetrical bevels, which correspond to the two sides of the U-shaped notch laterally.

[0008] Preferably, the needle handle is provided with a visual mark corresponding to the direction of the U-shaped notch of the hook head, and the visual mark constitutes a determination based on the orientation of the needle handle towards the hook head.

[0009] By adopting the above technical solution, during operation, insert the needle at an angle of about 30-45 degrees into the skin and flesh. Based on the surface characteristics such as the transverse creases of the metacarpophalangeal joints and the distal palmar crease, when it is judged that the tip has reached the vicinity of the sheath opening, press down into the solid tissue (generally referring to the tendon), and then gently push back and forth to explore. Because of the beveled design of the hook head (the bottom wall corresponding to the position of the hook cutting edge of the needle bar is inclined upward), it will not hook into the tendon. When you feel resistance, it is generally because it has hooked into the sheath. Then, use the hook cutting edge at the bottom of the hook to cut open the sheath with a little force. The hook-shaped cutting head is formed by a U-shaped notch on the side wall of the head section of the needle shaft. This design features a recessed cutting edge, preventing the cutting head from protruding and facilitating entry into human tissue while minimizing tissue damage. The cutting edge is formed within the arc-shaped hook of the U-shaped notch, ensuring stable and reliable hooking of the tendon sheath for release during surgery. Furthermore, the inclined U-shaped notch design creates a transitional slope, allowing for precise cutting of the tendon sheath point until release, ensuring safe and reliable surgical procedures. The cutting edge is formed by two symmetrical cutting edges aligned with the central axis of the needle shaft, facilitating precise and controllable surgical manipulation. The head section has a pointed tip for easy insertion, with a blunt, rounded tip (non-sharpened). The bottom wall of the head section is also rounded, further reducing or preventing accidental injury to tendons, nerves, and blood vessels.

[0010] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the surgical hook for tenosynovitis of this utility model; Figure 2 for Figure 1 A magnified view of part A in the middle; Figure 3 This is a schematic diagram of the head section structure of the needle bar of this utility model. Detailed Implementation

[0012] See appendix Figures 1-3This utility model discloses a surgical hook for tenosynovitis, including a handle 1 and a needle bar 2 disposed on the handle 1. The needle bar 2 is generally cylindrical, and has a hook-shaped cutting head 21 with a cutting edge 211. The cutting edge 21 is formed by a U-shaped notch 221 on the side wall of the head section 22 of the needle bar 2, with an opening facing the tail end of the needle bar 2. That is, a hook shape is formed in the lateral opening of the needle bar 2. The cutting edge 21 and the needle bar are on the same axis, which facilitates entry into human tissue, avoids damage to human tissue, and facilitates surgical operation. In this U-shaped notch design, the U-shaped notch 221 includes an arc-shaped hook opening 2211 at the bottom. The arc-shaped hook opening 2211 is connected to a transition slope wall 2212 at the tail end of the needle bar 2. In order to form a reliable cutting edge 211, the arc-shaped hook opening 2211 of the U-shaped notch 221 is laterally positioned. The needle bar 2 has symmetrically arranged cutting edge forming walls 212 on both sides. The edges of the arc-shaped hook opening 2211 are thinned by these two walls to form the hook-cutting cutting edge 211. Beveled surfaces are ground on both sides of the corresponding arc-shaped hook opening 2211, thus forming the hook-cutting cutting edge at the transverse middle position of the arc-shaped hook opening 2211. The hook-cutting cutting edge 211 corresponds to the plane of the central axis of the needle bar 2, facilitating precise and controllable surgical operation. The hook-cutting cutting edge is formed within the arc-shaped hook opening of the U-shaped notch, allowing for stable and reliable hooking of the tendon sheath during surgical operation for release. Furthermore, the inclined U-shaped notch design forms a transition slope wall, allowing for hooking and cutting the tendon sheath point by point until release, ensuring safe and reliable surgical operation. The bottom wall 222 of the head section 22 of the needle bar 2, corresponding to the position of the hook-cutting cutting edge 211, is inclined upwards, forming a tip 223 at the head section 22. This tip facilitates insertion through the surgical incision to reach the tendon sheath. Furthermore, the tip of the tip 223 is a blunt, rounded end, meaning the tip is not sharpened to avoid accidentally injuring tendons, nerves, blood vessels, or other tissues. The bottom wall 222 of the head section 22 of the needle shaft 2 is also rounded.

[0013] The head section 22 of the needle bar 2 is flattened by two symmetrical inclined surfaces 224, which correspond to the two sides of the U-shaped notch 221 laterally. The flattened design of the front section of the needle bar forming the hook head facilitates tissue insertion and also facilitates the shaping of the cutting edge. The needle handle 1 is provided with a visible mark 12 corresponding to the direction of the U-shaped notch 221 of the hook head 21. The visible mark 12 determines the orientation of the hook head 21 based on the needle handle 1. The specific form of the visible mark 12 can be set as needed, such as a line or a groove. It should be noted that the correspondence between the visible mark 12 and the direction of the U-shaped notch 221 means that the visible mark 12 can be located in the same direction as the U-shaped notch 221, or it can be located in the opposite direction to the U-shaped notch 221.

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