Novel needle knife for treating stenosing tenosynovitis of flexor tendon
By setting a non-invasive round head and an adjustable handle on the needle knife, the existing needle knife is solved to damage the tendon and vascular nerves when treating flexor tendon stenosis tendonitis, achieving higher operating convenience and safety.
Patent Information
- Application Number
- CN202420315502.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-02-20
AI Technical Summary
When treating flexor tendon stenosis of flexor tendonitis, existing needle knives lack blade protection, which can easily damage the tendon and surrounding vascular nerves. The blade angle and handle length cannot be adjusted, which affects the convenience of operation.
A new needle knife is designed, which adopts a bladeless round head setting to avoid damage to the tendons and blood vessel nerves. The adjustable handle and limiting mechanism are used to facilitate adjustment of the blade angle and handle length to meet different operating needs.
The edgeless round head is set up to protect the flexor tendon, avoiding damage from traditional needle surgery. The adjustability of the blade angle and handle length improves the convenience of operation and reduces the risk of accidental injury to the vascular nerves.
Smart Images
Figure CN222516937U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of needle knives, in particular to a novel needle knives for treating stenosing tenosynovitis of flexor tendons. Background Art
[0002] Acupotomy is a common device used to treat stenosing tenosynovitis of the flexor tendon. Acupotomy treatment is gradually being widely recognized and promoted for its unique advantages such as precise efficacy, small wound area, short treatment cycle, and simplicity and ease of use.
[0003] When using a needle knife to treat stenosing tenosynovitis of the flexor tendon, the operation is blind and relies entirely on the surgeon's hand feel and experience. The existing needle knives have blades on their heads that lack protection. If the needle is inserted with a small force, the pulley will not be cut, and if the needle is inserted with a large force, the flexor tendon below will be damaged, which will cause the flexor tendon to rupture and cause the finger to lose its flexion function. In addition, the angle of the blade and the length of the handle of the existing needle knife are fixed, and cannot be adjusted according to the specific operating needs of the doctor during the operation. Therefore, in view of the above situation, it is urgently necessary to develop a new needle knife for treating stenosing tenosynovitis of the flexor tendon of the flexor tendon by setting a bladeless round head, which can avoid accidental injury to the flexor tendon and its surrounding blood vessels and nerves during surgery, and is convenient to adjust the angle of the blade and the length of the handle, so as to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content
[0004] The utility model aims to provide a novel needle knife for treating stenosing tenosynovitis of flexor tendon of the digitorum, which is convenient for adjusting the angle of the blade and the overall length, and is convenient for doctors to use and operate.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A new needle knife for treating stenosing tenosynovitis of the flexor tendon, comprising a lower needle body, an upper needle body, an adjustable handle, a pin shaft, a limiting mechanism and a disc. The left end of the lower needle body is provided with a blade and a bladeless round head, and the blade is located 0.2 mm behind the bladeless round head. The right end of the lower needle body is inserted into the upper needle body, and the right end of the lower needle body is rotatably connected to the upper needle body through a pin shaft. A disc is fixed on the pin shaft, and a limiting mechanism inserted into the disc is installed on the upper needle body. The upper needle body is installed with an adjustable handle extending to the outside thereof.
[0007] Preferably: the adjustable handle comprises: an adjusting rod, a needle handle, a fastening bolt and a nut, the adjusting rod is slidably installed in the upper needle body, the needle handle is fixed to the upper end of the adjusting rod, a fastening bolt that passes through the upper needle body is installed on the adjusting rod, a nut is installed on the fastening bolt, and a plurality of sockets for the fastening bolts to pass through are provided on the upper needle body.
[0008] Preferably: the limiting mechanism includes: a vertical plate, a triangular clamping block, a guide rod and a spring, the vertical plate is fixed to the side of the upper needle body, the guide rod is slidably installed on the vertical plate, the triangular clamping block is fixed to the lower end of the guide rod, a spring is installed on the outer side of the guide rod, the upper end of the spring is fixed to the guide rod, the lower end of the spring is fixed to the vertical plate, and a plurality of triangular clamping grooves for inserting the triangular clamping blocks are arranged on the disc.
[0009] Preferably, the angle between two adjacent triangular slots is 5°.
[0010] The beneficial effects of the utility model are as follows: when using the new needle knife for treating stenosing tenosynovitis of the flexor tendon, the angle between the lower needle body and the upper needle body and the length of the adjustable handle are adjusted according to the operation requirements. When adjusting, the fastening bolt and the nut are first removed, and then the adjusting rod is moved up and down. After the adjustment is completed, the adjusting rod is fixed to the upper needle body using the fastening bolt and the nut; the guide rod is pulled so that the guide rod drives the triangular clamping block to move out of the triangular clamping groove. At this time, the spring is in a stretched state, and then the lower needle body is rotated to drive the pin shaft and the disc to rotate through the lower needle body. When After the lower needle body is adjusted, the guide rod is released, and the guide rod drives the triangular clamping block to be inserted into the triangular clamping slot under the action of the spring elastic force, thereby fixing the lower needle body, the pin shaft and the disc, and then adjusting the angle of the blade for easy operation; the setting of the bladeless round head completely protects the flexor tendon of the digitorum from being damaged by the traditional sharp-blade needle knife procedure, and the sliding of the bladeless round head on the flexor tendon of the digitorum allows the flexor tendon to become a strong support for the operation, making the destruction of the pulley structure more powerful and thorough, while also avoiding to the greatest extent the accidental injury to the blood vessels and nerves on both sides caused by careless operation due to sliding left and right. In summary, the utility model can avoid accidental injury to the flexor tendon of the digitorum and the blood vessels and nerves around it during surgery through the setting of the bladeless round head; the angle of the blade is easy to adjust, and the length of the handle is easy to adjust, which is convenient for doctors to use and operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .
[0012] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .
[0013] Figure 3 For this utility model Figure 2 Front view of .
[0014] Figure 4 It is an exploded view of the utility model.
[0015] Figure 5 For this utility model Figure 1 Partial view at point A in the middle.
[0016] Legend:
[0017] 1. Lower needle body; 101. Blade; 102. Bladeless round head; 2. Upper needle body; 201. Socket; 3. Adjustable handle; 301. Adjusting rod; 302. Needle handle; 303. Fastening bolt; 304. Nut; 4. Pin; 5. Limiting mechanism; 501. Vertical plate; 502. Triangular clamping block; 503. Guide rod; 504. Spring; 6. Disc; 601. Triangular clamping slot. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Specific examples are given below.
[0020] See also Figure 1 to Figure 5 In the embodiment of the utility model, a new needle knife for treating stenosing tenosynovitis of flexor tendon of the digitorum comprises a lower needle body 1, an upper needle body 2, an adjustable handle 3, a pin shaft 4, a limiting mechanism 5 and a disc 6. A blade 101 and a bladeless round head 102 are arranged at the left end of the lower needle body 1, and the blade 101 is located 0.2 mm behind the bladeless round head 102. The right end of the lower needle body 1 is inserted into the upper needle body 2, and the right end of the lower needle body 1 is rotatably connected with the upper needle body 2 through the pin shaft 4. A disc 6 is fixed on the pin shaft 4, and a limiting mechanism 5 inserted into the disc 6 is installed on the upper needle body 2. An adjustable handle 3 extending to the outside is installed. When in use, the angle between the lower needle body 1 and the upper needle body 2 and the length of the adjustable handle 3 are adjusted as needed to facilitate the doctor's operation. In addition, the provision of the bladeless round head 102 completely protects the flexor tendon of the digitorum from being damaged by traditional sharp-blade needle knife surgery. The sliding of the bladeless round head 102 on the flexor tendon of the digitorum allows the flexor tendon to become a strong support for the operation, making the destruction of the pulley structure more powerful and thorough, while also avoiding to the greatest extent the accidental injury to the blood vessels and nerves on both sides caused by inadvertent operation due to sliding left and right.
[0021] The adjustable handle 3 includes: an adjusting rod 301, a needle handle 302, a fastening bolt 303 and a nut 304. The adjusting rod 301 is slidably installed in the upper needle body 2. The needle handle 302 is fixed to the upper end of the adjusting rod 301. A fastening bolt 303 that passes through the upper needle body 2 is installed on the adjusting rod 301. A nut 304 is installed on the fastening bolt 303. The upper needle body 2 is provided with a plurality of sockets 201 for the fastening bolt 303 to pass through. When adjusting, first remove the fastening bolt 303 and the nut 304, and then move the adjusting rod 301 up and down. After the adjustment is completed, the adjusting rod 301 is fixed to the upper needle body 2 using the fastening bolt 303 and the nut 304.
[0022] The limiting mechanism 5 includes: a vertical plate 501, a triangular clamping block 502, a guide rod 503 and a spring 504. The vertical plate 501 is fixed to the side of the upper needle body 2. The guide rod 503 is slidably installed on the vertical plate 501. The lower end of the guide rod 503 is fixed with a triangular clamping block 502. The outer side of the guide rod 503 is installed with a spring 504. The upper end of the spring 504 is fixed to the guide rod 503, and the lower end of the spring 504 is fixed to the vertical plate 501. A plurality of triangular clamping grooves 601 for inserting the triangular clamping block 502 are provided on the disk 6. Two adjacent triangular clamping blocks 502 are inserted into the vertical plate 501. The angle between the grooves 601 is 5°. When adjusting, first pull the guide rod 503 so that the guide rod 503 drives the triangular block 502 to move out of the triangular groove 601. At this time, the spring 504 is in a stretched state. Then, rotate the lower needle body 1 to drive the pin 4 and the disc 6 to rotate. After the lower needle body 1 is adjusted, release the guide rod 503. Under the action of the elastic force of the spring 504, the guide rod 503 drives the triangular block 502 to be inserted into the triangular groove 601, thereby fixing the lower needle body 1, the pin 4 and the disc 6.
[0023] Working principle: When using the new needle knife for treating stenosing tenosynovitis of the flexor tendon, the angle between the lower needle body 1 and the upper needle body 2 and the length of the adjustable handle 3 are adjusted according to the operation requirements. When adjusting, the fastening bolt 303 and the nut 304 are first removed, and then the adjusting rod 301 is moved up and down. After the adjustment is completed, the adjusting rod 301 is fixed to the upper needle body 2 using the fastening bolt 303 and the nut 304; the guide rod 503 is pulled so that the guide rod 503 drives the triangular block 502 to move out of the triangular slot 601. At this time, the spring 504 is in a stretched state, and then the lower needle body 1 is rotated to drive the pin shaft 4 and the disc 6 to rotate through the lower needle body 1. The guide rod 503 is then released, and the spring 504 is used to drive the triangular block 502 to be inserted into the triangular slot 601, thereby fixing the lower needle body 1, the pin 4 and the disc 6, and adjusting the angle of the blade 101 for easy operation. The arrangement of the bladeless round head 102 completely protects the flexor tendon of the digitorum from being damaged by the traditional sharp-blade needle knife technique. The sliding of the bladeless round head 102 on the flexor tendon of the digitorum allows the flexor tendon to become a strong support for the operation, making the destruction of the pulley structure more powerful and thorough, while also avoiding to the greatest extent the accidental injury to the blood vessels and nerves on both sides caused by inadvertent operation due to sliding left and right.
[0024] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.
Claims
1. A new needle knife for treating stenosing tenosynovitis of flexor tendon, characterized in that: The invention comprises a lower needle body (1), an upper needle body (2), an adjustable handle (3), a pin shaft (4), a limiting mechanism (5) and a disc (6); the left end of the lower needle body (1) is provided with a blade (101) and a bladeless round head (102); the blade (101) is located 0.2 mm behind the bladeless round head (102); the right end of the lower needle body (1) is inserted into the upper needle body (2); the right end of the lower needle body (1) is rotatably connected to the upper needle body (2) via a pin shaft (4); a disc (6) is fixed on the pin shaft (4); a limiting mechanism (5) inserted into the disc (6) is installed on the upper needle body (2); and an adjustable handle (3) extending to the outside of the upper needle body (2) is installed on the upper needle body (2).
2. The novel needle knife for treating stenosing tenosynovitis of flexor tendon according to claim 1, characterized in that: The adjustable handle (3) comprises: an adjusting rod (301), a needle handle (302), a fastening bolt (303) and a nut (304); the adjusting rod (301) is slidably mounted in the upper needle body (2); the needle handle (302) is fixed to the upper end of the adjusting rod (301); a fastening bolt (303) penetrating the upper needle body (2) is mounted on the adjusting rod (301); a nut (304) is mounted on the fastening bolt (303); and a plurality of insertion holes (201) for the fastening bolts (303) to pass through are provided on the upper needle body (2).
3. The novel needle knife for treating stenosing tenosynovitis of flexor tendon according to claim 1, characterized in that: The limiting mechanism (5) comprises: a vertical plate (501), a triangular clamping block (502), a guide rod (503) and a spring (504); the vertical plate (501) is fixed to the side of the upper needle body (2); the guide rod (503) is slidably mounted on the vertical plate (501); the triangular clamping block (502) is fixed at the lower end of the guide rod (503); a spring (504) is mounted on the outer side of the guide rod (503); the upper end of the spring (504) is fixed to the guide rod (503); the lower end of the spring (504) is fixed to the vertical plate (501); and a plurality of triangular clamping grooves (601) for inserting the triangular clamping blocks (502) are arranged on the disc (6).
4. The novel needle knife for treating stenosing tenosynovitis of flexor tendon according to claim 3, characterized in that: The included angle between two adjacent triangular slots (601) is 5°.