Novel needle knife

Abstract

The utility model discloses a novel needle knife which comprises a needle knife handle assembly, one end of the needle knife handle assembly is fixedly connected with a needle knife body, the needle knife body comprises a push knife and a bush-hook, the push knife is fixedly connected with the needle knife handle assembly, and the push knife is fixedly connected with the bush-hook. Compared with the prior art, the novel needle knife is simple and practical, the push-type broach is matched with the hook knife, when the push-type broach is not pushed and released thoroughly, the hook knife is used for hooking and releasing backwards, so that the tendon sheath is released more thoroughly, the treatment effect is better, repeated treatment is avoided, the treatment time is prolonged, and the pain degree of a patient is reduced; through the needle knife handle assembly, during releasing, a tool does not need to be prepared independently for forming a wound needed by needle knife pushing on the skin of a patient, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This utility model relates to the field of needle knife technology, and in particular to a novel needle knife. Background Technology

[0002] The needle knife is a product of the ingenious combination of traditional needles and modern scalpels. The shape of its needle-like blade tip allows for needle-like insertion during operation. Once the target area is reached, the blade tip can be used for cutting, dissection, and other surgical procedures. Needle knife operation is a closed procedure. Stenosing tenosynovitis of the flexor muscles is caused by repeated friction between the flexor tendon and the tendon sheath at the metacarpophalangeal joint, resulting in local edema, degeneration, thickening of the sheath wall, narrowing of the lumen, and local thickening of the tendon, thus hindering tendon gliding at that location and causing clinical symptoms.

[0003] Currently, the Qipingkou needle knife is widely used clinically to treat this disease. However, this needle knife does not thoroughly release the tendon sheath, easily damaging the soft tissues outside the tendon sheath, especially lacking protection for the tendon. These factors lead to difficulties in the procedure, prolonged operation time, severe patient pain, significant bleeding, prolonged postoperative swelling and pain in the local soft tissues, and slow recovery. If the needle knife is used with a downward cutting motion, it is difficult to control the depth of insertion after the needle knife breaks through the tendon sheath, thus damaging the tendon. Furthermore, this multi-point cutting method from superficial to deep makes it almost impossible to ensure that the release lines are in a straight line, and there are often discontinuities between the release lines. These factors cause inconvenience in operation and incomplete release of the tendon sheath. Therefore, we propose a new type of needle knife. Utility Model Content

[0004] The main purpose of this invention is to propose a novel needle knife that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel needle knife, comprising a needle knife handle assembly, one end of which is fixedly connected to a needle knife body, the needle knife body comprising a pusher and a hook, the pusher being fixedly connected to the needle knife handle assembly, and the pusher being fixedly connected to the hook.

[0006] As a further description of the above technical solution, the needle knife handle assembly includes a fixing plate and a knife handle sleeve. A fixing post is fixedly connected to one side of the fixing plate, and a needle is fixedly connected to the side of the fixing post away from the fixing plate.

[0007] As a further description of the above technical solution, the pusher is fixedly connected to the fixing plate, the handle sleeve is a cylindrical structure with one end open and the inside hollow, the internal length of the handle sleeve is greater than the length of the needle, and the handle sleeve is threadedly connected to the fixing post.

[0008] As a further description of the above technical solution, the pusher is fixedly connected to the fixed plate perpendicularly, the bottom end of the pusher is rounded, and the end of the pusher away from the fixed plate is provided with a pusher blade, and the angle between the pusher blade and the bottom end of the pusher is acute.

[0009] As a further description of the above technical solution, the hook knife includes a connecting straight rod, an arc-shaped rod and a hook knife body, and a hook knife blade is provided on one side of the hook knife body.

[0010] As a further description of the above technical solution, the connecting straight rod, the arc-shaped rod and the hook knife body are integrally formed. The connecting straight rod is fixedly connected to the upper end of the push knife on the side where the push knife blade is located, and the top end is on the same horizontal plane as the top end of the push knife. The bottom end of the hook knife blade is rounded.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. By using a combination of a push knife and a hook knife, the hook knife can be used to pull back and loosen the tendon sheath when the push knife is not fully inserted, resulting in a more thorough loosening of the tendon sheath, better treatment effect, and avoidance of having to push the knife again due to incomplete loosening, thus reducing treatment time and reducing the patient's pain.

[0013] 2. By setting up the needle knife handle assembly, it is possible to perform release without preparing separate tools to create the necessary incisions on the patient's skin for needle knife insertion, which is convenient and quick. Simply unscrew the handle sleeve from the fixing post, then use the needle knife handle assembly to create an incision at the patient's affected area, and then screw the handle sleeve back on. Subsequently, the needle knife body can be used for treatment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a novel needle knife according to this utility model;

[0015] Figure 2 This is an exploded view of the overall structure of a novel needle knife according to this utility model;

[0016] Figure 3 This is a schematic diagram of the pusher structure of a novel needle knife according to this utility model;

[0017] Figure 4 This is a schematic diagram of the hook structure of a novel needle knife according to this utility model.

[0018] In the diagram: 1. Needle handle assembly; 2. Needle body; 11. Fixing plate; 12. Handle sleeve; 13. Fixing post; 14. Needle; 21. Push knife; 22. Hook knife; 211. Push knife blade; 221. Connecting straight rod; 222. Curved rod; 223. Hook knife body; 224. Hook knife blade. Detailed Implementation

[0019] To make the technical means, creative features, and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a novel needle knife, including a needle knife handle assembly 1, which includes a fixing plate 11 and a handle sleeve 12. A fixing post 13 is fixedly connected to one side of the fixing plate 11, and a needle 14 is fixedly connected to the side of the fixing post 13 away from the fixing plate 11. The handle sleeve 12 is a hollow cylindrical structure with one open end. The internal length of the handle sleeve 12 is greater than the length of the needle 14. The handle sleeve 12 is threadedly connected to the fixing post 13. In the early stage of treatment, there is no need to prepare separate tools to make the wound required for needle knife advancement on the patient's skin. It is only necessary to unscrew the handle sleeve 12 from the fixing post 13, and then use the needle 14 on the needle knife handle assembly 1 to make a wound on the patient's affected area. After that, the handle sleeve 12 is screwed back on, and then the needle knife body 2 can be used for treatment.

[0023] The needle knife body 2 includes a pusher 21 and a hook 22. One end of the pusher 21 is vertically fixed to the fixing plate 11 on the needle knife handle assembly 1, and the other end of the pusher 21 is fixedly connected to the hook 22. The bottom end of the pusher 21 is rounded. The end of the pusher 21 away from the fixing plate 11 is provided with a pusher blade 211, and the angle between the pusher blade 21 and the bottom end of the pusher 21 is acute. The pusher blade 211 allows the front end of the pusher 21 to push and cut, while the rounded bottom end of the pusher 21 is relatively blunt, thereby avoiding the tendon being scratched by the blade during the pushing operation.

[0024] The hook knife 22 includes a connecting straight rod 221, an arc-shaped rod 222, and a hook knife body 223. The connecting straight rod 221, the arc-shaped rod 222, and the hook knife body 223 are integrally formed. A hook knife blade 224 is provided on the inner side of the hook knife body 223, while a pushing blade is provided on the side away from the hook knife blade 224. The connecting straight rod 221 is fixedly connected to the upper end of the push knife 21 on the side where the pushing blade 211 is located, and its top end is on the same horizontal plane as the top end of the push knife 21. The bottom of the hook blade 224 is rounded, and the curved rod 222 is slightly raised from the end connected to the straight rod 221, so that the lowest point of the hook blade 224 is higher than the lowest point of the pusher blade 21. During the treatment, the pusher blade only moves forward under the patient's skin, while the rounded bottom of the hook blade 224 can prevent the tendon from being scratched by the tip of the hook blade 224 when returning along the original path. The hook blade 224 then plays the role of releasing the tendon again when returning along the original path.

[0025] It should be noted that this utility model is a novel needle knife. Based on the local anatomical structure of the annular tendon sheath, this needle knife can achieve the purpose of completely releasing the tendon sheath in one go. The operation approach is as follows: unscrew the knife handle sleeve 12 from the fixing post 13, then use the needle 14 on the needle knife handle assembly 1 to puncture the patient's affected area to open the wound, then screw the knife handle sleeve 12 back on, and then use the needle knife body 2 to insert into the subcutaneous tissue through the wound to reach the fibrous sheath, and push from the proximal to the distal side to release the tendon sheath. If the release is not complete, the needle knife can be slightly lifted so that the hook knife 22 at the front end of the push knife 21 rotates downward and hooks the tendon sheath. When pulling back, the hook blade 224 on the hook knife 22 can release again. After the release is completed, slowly withdraw from the skin along the original path, thereby making the release operation smooth and the release line flat and smooth. Compared with existing novel needle knives, this utility model is simple and practical. By setting up a push knife and a hook knife in combination, when the push knife does not completely loosen the tendon sheath, the hook knife can be used to pull it back to loosen it, making the loosening of the tendon sheath more thorough, the treatment effect better, avoiding repeated treatments and prolonging the treatment time, reducing the degree of pain for patients. Moreover, the needle knife handle assembly eliminates the need to prepare separate tools to make the wound required for needle knife advancement on the patient's skin during loosening, making it convenient and quick.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel needle knife, characterized in that, It includes a needle knife handle assembly (1), one end of which is fixedly connected to a needle knife body (2). The needle knife body (2) includes a push knife (21) and a hook knife (22). The push knife (21) is fixedly connected to the needle knife handle assembly (1), and the push knife (21) and the hook knife (22) are fixedly connected.

2. The novel needle knife according to claim 1, characterized in that, The needle knife handle assembly (1) includes a fixing plate (11) and a knife handle sleeve (12). A fixing post (13) is fixedly connected to one side of the fixing plate (11), and a needle (14) is fixedly connected to the side of the fixing post (13) away from the fixing plate (11).

3. The novel needle knife according to claim 2, characterized in that, The pusher (21) is fixedly connected to the fixing plate (11). The handle sleeve (12) is a cylindrical structure with one end open and the inside hollow. The internal length of the handle sleeve (12) is greater than the length of the needle (14). The handle sleeve (12) is threadedly connected to the fixing post (13).

4. The novel needle knife according to claim 1, characterized in that, The pusher (21) is fixedly connected to the fixed plate (11) perpendicularly. The bottom end of the pusher (21) is rounded. The end of the pusher (21) away from the fixed plate (11) is provided with a pusher blade (211), and the angle between the pusher (21) and the bottom end of the pusher (21) is acute.

5. A novel needle knife according to claim 1, characterized in that, The hook knife (22) includes a connecting straight rod (221), an arc-shaped rod (222) and a hook knife body (223), and a hook knife blade (224) is provided on one side of the hook knife body (223).

6. A novel needle knife according to claim 5, characterized in that, The connecting straight rod (221), the arc rod (222) and the hook knife body (223) are integrally formed. The connecting straight rod (221) is fixedly connected to the upper end of the push knife (21) on the side where the push knife blade (211) is located, and the top end is on the same horizontal plane as the top end of the push knife (21). The bottom end of the hook knife blade (224) is rounded.

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