Improved kirschner wire poke gun for releasing deep layer of collateral ligament on inner side of knee joint

Abstract

The utility model provides an improved kirschner wire pricking gun for releasing the deep layer of collateral ligaments on the inner side of a knee joint, which relates to the technical field of knee joint treatment, and comprises a sleeve, a kirschner wire is slidably connected in the sleeve, one end of the kirschner wire is fixedly provided with a separation blade, the side surface of the separation blade is fixedly provided with a grip, and the grip is fixedly connected with the kirschner wire. The improved kirschner wire with the scales is used as a tool for releasing the deep layer of the collateral ligament on the inner side of the knee joint, and the knee joint collateral ligament debridement device has the advantages of being easy and convenient to operate, high in repeatability and the like. In the operation process, the needle inserting depth can be adjusted according to the thickness of the medial collateral ligament measured before an operation, so that the releasing effect is achieved. The Kirschner wire is used for releasing from inside to outside, so that the probability of nerve and blood vessel injury can be reduced; the superficial layer of the medial collateral ligament is not damaged, and the stability of the knee joint can be protected to a greater extent.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to an improved Kirschner wire poking gun for releasing the deep layer of the medial collateral ligament of the knee joint. Background Art

[0002] Arthroscopic treatment of posterior horn medial meniscus injuries in the knee often requires release of the medial collateral ligament to obtain adequate operating space and avoid iatrogenic injury. Currently, percutaneous multi-point puncture release from the outside-inward direction is the primary approach. Although numerous researchers have refined the outside-in technique, the risks of percutaneous puncture-induced local infection, damage to surrounding structures (such as the great saphenous vein and saphenous nerve), and persistent local pain and joint instability after surgery remain unavoidable. Studies have shown that the deep layer of the medial collateral ligament of the knee is more important than the superficial layer. Release can expand the posteromedial gap while maximally preserving medial knee stability, with minimal impact on knee joint function. Therefore, theoretically, release of the deep layer of the medial collateral ligament alone can effectively increase the posteromedial knee joint space and reduce knee damage. A literature review found that some scholars used a banana knife (3.0 mm in diameter) to cut and release the deep layer of the medial collateral ligament of the knee joint from the inside to the outside under full endoscopy. After release, the medial knee space was significantly increased and the operation was quick. However, the banana knife has a sharp blade and is difficult to insert and exit under endoscopy. It is also very easy to cause damage to the tibial ligament, meniscus and other surrounding structures in the joint. Its practicality is poor and needs to be improved. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical solution: an improved Kirschner wire poking gun for loosening the deep layer of the medial collateral ligament of the knee joint, comprising a sleeve, a Kirschner wire is slidably connected to the interior of the sleeve, a baffle is fixedly installed at one end of the Kirschner wire, and a handle is fixedly installed on the side of the baffle.

[0005] Preferably, one end of the cannula is provided with a pointed tip. The pointed tip facilitates easier tissue penetration during surgery, particularly when entering deep tissue, reducing resistance and improving surgical precision. The pointed tip minimizes damage to surrounding tissue, reduces surgical difficulty, and ensures smooth instrument access to the target location, thereby improving the efficiency of the release procedure.

[0006] Preferably, the K-wire has a needle tip at one end. This design allows the K-wire to penetrate deeper into the medial collateral ligament of the knee joint, effectively cutting deeper into the tissues. This refined needle tip design reduces damage to surrounding non-target tissues, reduces postoperative complications, and enables more precise release, improving overall surgical outcomes.

[0007] Preferably, the surface of the Kirschner wire is provided with graduated grooves. These grooves help the surgeon precisely control the depth of the needle during surgery. Based on preoperative measurements, they can avoid over-deep or shallow insertion, reducing the risk of misoperation. This design significantly enhances the controllability and precision of the procedure, helping to reduce postoperative complications and enhance the safety of the release procedure.

[0008] Preferably, the handle has anti-slip grooves on its surface. These grooves increase the operator's gripping friction, reducing slippage or unstable grip during operation, particularly during surgery, which can be caused by sweating. This anti-slip design enhances surgical safety and stability, ensuring a smoother procedure and reducing the risk of accidents.

[0009] Compared with the prior art, the advantages and positive effects of the present invention are:

[0010] 1. This utility model utilizes a modified Kirschner wire with a scale as a tool for releasing the deep layer of the medial collateral ligament of the knee joint, offering advantages such as ease of operation and high repeatability. During the procedure, the needle insertion depth can be adjusted based on preoperative measurements of the medial collateral ligament thickness to achieve the desired release effect. Furthermore, using the Kirschner wire to release the ligament from the inside out reduces the risk of nerve and vascular damage, while sparing the superficial layer of the medial collateral ligament, thereby further preserving the stability of the knee joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model provides a schematic diagram of the overall structure of an improved Kirschner wire poking gun for releasing the deep layer of the medial collateral ligament of the knee joint;

[0012] Figure 2 The utility model provides a schematic diagram of the overall explosive structure of an improved Kirschner wire poking gun for releasing the deep layer of the medial collateral ligament of the knee joint.

[0013] Legend:

[0014] 1. Cannula; 2. Pointed tip; 3. Kirschner wire; 4. Needle; 5. Baffle; 6. Handle; 7. Anti-slip grooves. DETAILED DESCRIPTION

[0015] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0016] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example 1

[0018] See also Figure 1-2 The utility model provides a technical solution: an improved Kirschner wire poking gun for releasing the deep layer of the medial collateral ligament of the knee joint, comprising a sleeve 1, a Kirschner wire 3 is slidably connected inside the sleeve 1, a baffle 5 is fixedly installed at one end of the Kirschner wire 3, and a handle 6 is fixedly installed on the side of the baffle 5. This structural design improves the accuracy and safety of the operation. The sliding connection inside the sleeve 1 ensures that the Kirschner wire 3 can move stably during operation, reducing the risk of needle deviation during operation. The provision of the baffle 5 and the handle 6 helps the operator to better control the needle, enhances the operating feel, avoids needle slippage or unstable operation, and further reduces the possibility of accidental injury. A pointed tip 2 is provided at one end of the sleeve 1. The design of the pointed tip 2 of the sleeve 1 facilitates easier penetration of tissue during surgery, especially when entering deep tissue, which can reduce resistance and improve the accuracy of operation. The pointed tip 2 can reduce damage to surrounding tissues, lowering surgical difficulty and ensuring the instrument can successfully reach the target location, thereby improving the efficiency of the release operation. A needle tip 4 is provided at one end of the K-wire 3. The design of the needle tip 4 gives the K-wire 3 improved puncture ability, effectively cutting deep tissues of the medial collateral ligament of the knee joint. The refined design of the needle tip 4 reduces damage to surrounding non-target tissues, reduces postoperative complications, and enables a more precise release operation, improving the overall surgical outcome. The surface of the K-wire 3 is provided with graduated grooves, which help the surgeon precisely control the depth of insertion during surgery. Based on preoperative measurements, this design can prevent overly deep or shallow insertions and reduce the risk of misoperation. This design significantly improves the controllability and accuracy of the operation, helps reduce postoperative complications, and improves the safety of the release operation. The surface of the handle 6 is provided with anti-slip grooves 7, which increase the operator's grip friction and reduce slippage or unstable grip during operation, especially during surgery, which can be caused by sweating. The anti-slip design enhances the safety and stability of the surgery, ensuring a smoother operation and reducing accidental risks.

[0019] Working principle: By precisely controlling the depth and direction of the needle 4, the deep layer of the medial collateral ligament of the knee joint is released. Before the operation begins, the doctor determines the release site and ligament thickness based on imaging data, and adjusts the insertion depth of the needle. During the operation, after the tip 2 of the cannula 1 successfully enters the target site, the handle 6 is used to control the sliding of the Kirschner wire 3, and the needle 4 is used to complete the release of the deep layer of the ligament. The graduated grooves on the surface of the Kirschner wire 3 help the doctor adjust the needle insertion depth in real time to ensure that only the deep tissue is released, retaining the integrity of the superficial ligament, and avoiding damage to peripheral nerves, blood vessels and other structures. After the release is completed, the Kirschner wire 3 and cannula 1 are removed to avoid further damage. This improved design improves the stability and accuracy of the operation through the use of a non-slip handle 6 and precise graduated grooves, reduces surgical trauma, and significantly improves the safety of the operation and the patient's recovery speed.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A modified Kirschner wire piercing gun for releasing the deep layer of the medial collateral ligament of the knee joint, comprising a sleeve (1), characterized in that: A Kirschner wire (3) is slidably connected to the interior of the sleeve (1), a baffle (5) is fixedly mounted on one end of the Kirschner wire (3), and a handle (6) is fixedly mounted on the side of the baffle (5).

2. The improved Kirschner wire piercing gun for releasing the deep layer of the medial collateral ligament of the knee joint according to claim 1, characterized in that: One end of the sleeve (1) is provided with a pointed tip (2).

3. The improved Kirschner wire gun for releasing the deep layer of the medial collateral ligament of the knee joint according to claim 1, characterized in that: One end of the Kirschner wire (3) is provided with a needle head (4).

4. The improved Kirschner wire piercing gun for releasing the deep layer of the medial collateral ligament of the knee joint according to claim 1, characterized in that: The surface of the Kirschner wire (3) is provided with a scale groove.

5. The improved Kirschner wire piercing gun for releasing the deep layer of the medial collateral ligament of the knee joint according to claim 1, characterized in that: The surface of the handle (6) is provided with anti-slip grooves (7).

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