Improved small needle knife for treating tenosynovitis

Abstract

The utility model discloses an improved small needle knife for tenosynovitis treatment, which comprises a knife head, a needle body, a connecting part and a holding part, the knife head is fixedly arranged at the front end of the needle body, the rear end of the needle body is directly connected with the holding part or is fixed with the holding part through the connecting part, and the connecting part enables the axial direction of the needle body and the holding part to form an included angle. The tool bit is provided with an inwards-sunken cutting part. The utility model aims to provide the improved small needle knife for treating tenosynovitis, which has the advantages of compact and reliable structure, multiple use modes, convenience in operation and convenience in stripping by applying force.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically to an improved small needle knife for the treatment of tenosynovitis. Background Technology

[0002] The small needle knife resembles an acupuncture needle in appearance, but its tip has a narrow blade, which can perform the dual functions of needle insertion and knife cutting. It is a new type of TCM medical device formed on the basis of modern Western surgical treatment and traditional Chinese medicine acupuncture treatment.

[0003] Currently, it is commonly used to treat: vertebral artery type cervical spondylosis, nerve root type cervical spondylosis, chronic soft tissue injury, acute and chronic tenosynovitis and ganglion cysts, myofascial pain syndrome, bone spurs, stenosing tenosynovitis of the flexor tendons, knee osteoarthritis, heel pain syndrome, frozen shoulder, lateral epicondylitis of the humerus, etc.

[0004] Current treatments for tenosynovitis are typically staged and tailored to the severity of symptoms. Early symptoms are relatively mild, and immobilization of the injured area can help prevent overuse. Treatment may also combine anti-inflammatory and analgesic medications, physical therapy, and local injections; surgery may also be considered. Small needle knife therapy is essentially a closed release procedure between surgical and non-surgical approaches, built upon surgical incisions and acupuncture. Because tenosynovitis involves fluid buildup and high pressure, the fluid is released through the needle knife during treatment, reducing pressure. Further deep penetration allows for easy removal of the local lesion, releasing harmful tissue, releasing adhesions, and relieving pressure on the tendon sheath, thus achieving pain relief and disease elimination.

[0005] However, while existing small needle knife techniques offer a variety of treatment options, they have the following drawbacks in treating tenosynovitis:

[0006] 1. Because the lesion is filled with fluid, and the force required for excision and dissection varies with the degree of disease progression, the hardness of the tendon sheath will also increase as the inflammation progresses, making it difficult to cut. Therefore, during the excision or dissection process, the tip of the small needle knife will always deviate from the cutting position due to its hardness and other issues.

[0007] 2. Due to the direction of the tendon sheath, the movement direction of the small needle knife needs to be consistent with the direction of the tendon sheath. Existing small needle knives are all straight. Therefore, the small needle knife needs to be bent before treatment to facilitate the application of force. This will cause the needle body to bend when applying force.

[0008] 3. Inconvenient to hold: The holding surface of the tip of the small needle knife in the existing technology is small and thin. During the operation, the flow of synovial fluid and blood makes the holding surface even more slippery, making it difficult to exert force.

[0009] 4. The direction of the grip end and the front cutting edge is fixed. When it is necessary to adjust the direction of the incision during the operation, it will cause the grip direction to be inconvenient to operate. Summary of the Invention

[0010] In order to solve the above problems, the purpose of this utility model is to provide an improved small needle knife for the treatment of tenosynovitis that is compact and reliable, has multiple uses, is easy to operate, and is easy to apply force for stripping.

[0011] According to one aspect of this utility model, an improved small needle knife for treating tenosynovitis is provided, comprising: a blade head, a needle body, a connecting part, and a gripping part. The blade head is fixedly mounted at the front end of the needle body, and the rear end of the needle body is directly connected to the gripping part or fixed to the gripping part through the connecting part. The connecting part forms an angle between the axis of the needle body and the gripping part, and the blade head has an inwardly recessed cutting portion. Different angles between the blade head and the gripping part are achieved through the connecting part to meet different operational needs, the gripping part facilitates gripping and thus prevents slippage, and the inwardly recessed cutting portion facilitates cutting and separation.

[0012] In some embodiments, the cutting portion includes a first cutting edge and a second cutting edge, which are connected to form a concave cutting portion with an included angle. The concave cutting portion with an included angle facilitates the separation of the tendon sheath.

[0013] In some embodiments, the first and second cutting edges are connected to form an angle that is acute, obtuse, or right. Different angles facilitate the separation of tendon sheaths of varying hardness, thus broadening the applicability.

[0014] In some implementations, the first and second cutting edges are of the same length. Having the first and second cutting edges of the same length ensures that the angles of the tips are the same.

[0015] In some implementations, the first and second cutting edges are of different lengths. By ensuring that the first and second cutting edges are of the same length, the angles of their tips differ, thus accommodating the separation of tendon sheaths of varying hardness.

[0016] In some embodiments, the cutting portion is a concave, arc-shaped cutting edge. The arc-shaped cutting edge allows for the separation of softer tendon sheaths without slipping.

[0017] In some embodiments, the connecting part includes: a first fixing sleeve, a second fixing sleeve, a first connector and a second connector, the first fixing sleeve and the first connector are fixedly connected and the axes of the first fixing sleeve and the first connector have an included angle, the rear end of the needle body is provided with the second connector, the holding part is provided with the second fixing sleeve, the second connector is detachably plugged into the first fixing sleeve or the second fixing sleeve, and the first connector is detachably plugged into the second fixing sleeve;

[0018] The included angle between the axial directions of the first connector of the first fixed sleeve and the first fixed sleeve is 110°-130°. The included angle between the axial directions of the first fixed sleeve and the first connector facilitates operation. The first fixed sleeve or the second fixed sleeve can be detachably connected via the second connector, and the first connector can be detachably connected to the second fixed sleeve to achieve multiple functions.

[0019] In some embodiments, the first fixing sleeve includes: a first mounting hole, a first sliding groove, a first limiting groove, a second sliding groove, and a second limiting groove. The outer wall of the first mounting hole is provided with the first sliding groove, and the end of the first sliding groove is provided with the first limiting groove. The outer wall of the first mounting hole is provided with the second sliding groove, and the end of the second sliding groove is provided with the second limiting groove. The first sliding groove and the second sliding groove are perpendicular to each other. The perpendicular first sliding groove and the second sliding groove facilitate changing the angle between the cutting edge and the grip for easy operation.

[0020] The second fixing sleeve includes a second mounting hole, a third sliding groove, and a third limiting groove. The second mounting hole is located at the bottom of the gripping part, the third sliding groove is located on the wall of the second mounting hole, and the third limiting groove is located at the end of the third sliding groove. The second mounting hole, third sliding groove, and third limiting groove allow for compatible installation of both the first and second connectors, enabling use in various configurations.

[0021] In some embodiments, a first limiting block and a second limiting block are symmetrically arranged on the outer circumference of the outer wall of the first connector. The first limiting block and the second limiting block are limited in the first limiting groove by a first sliding groove, or the first limiting block and the second limiting block are limited in the second limiting groove by a second sliding groove, or the first limiting block and the second limiting block are limited in the third limiting groove by a third sliding groove.

[0022] The outer circumference of the second connector is symmetrically provided with a third limiting block and a fourth limiting block, which are confined within a third limiting groove via a third sliding groove. The second mounting hole, the third sliding groove, and the third limiting groove allow for compatible installation of both the first and second connectors, enabling use in multiple configurations.

[0023] In some embodiments, the gripping part includes an inner core and an elastic layer, with the outer wall of the inner core covered by the elastic layer. The elastic layer facilitates gripping operations.

[0024] This utility model discloses an improved small needle knife for treating tenosynovitis, which, compared with existing technologies, has the following advantages: compact and reliable structure, multiple usage methods, convenient operation, and easy force application for dissection; different angles between the blade and the grip are achieved through the connecting part to meet different operational needs; the grip facilitates gripping and force application to prevent slippage; the concave cutting part facilitates cutting and separation; the concave cutting part with an included angle facilitates the separation of tendon sheaths; different angles facilitate the separation of tendon sheaths of different hardness, thus broadening its applicability; the first and second cutting blades are of the same length to ensure that the tip angles are the same; the first... The same length for the cutting blade and the second cutting blade ensures different angles at the tips, thus adapting to the separation of tendon sheaths of varying hardness. The arc-shaped cutting blade allows for the separation of softer tendon sheaths without slippage. The second connector allows for detachable connection to either the first or second fixing sleeve, while the first connector allows for detachable connection to the second fixing sleeve, enabling multiple operational functions. The mutually perpendicular first and second sliding grooves facilitate changing the angle between the cutting edge and the grip for easy operation. The second mounting hole, third sliding groove, and third limiting groove ensure compatibility between the first and second connectors, allowing for use in various states. The elastic layer facilitates gripping operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the improved small needle knife for treating tenosynovitis according to this utility model;

[0026] Figure 2 This is a schematic diagram of one embodiment of the cutting part of the improved small needle knife for treating tenosynovitis of this utility model;

[0027] Figure 3 This is a schematic diagram of one embodiment of the cutting part of the improved small needle knife for treating tenosynovitis of this utility model;

[0028] Figure 4 This is a schematic diagram of one embodiment of the cutting part of the improved small needle knife for treating tenosynovitis of this utility model;

[0029] Figure 5 This is a schematic diagram of one embodiment of the cutting part of the improved small needle knife for treating tenosynovitis of this utility model;

[0030] Figure 6 This is a schematic diagram of one embodiment of the cutting part of the improved small needle knife for treating tenosynovitis of this utility model;

[0031] Figure 7 This is a schematic diagram of the connecting part of the improved small needle knife for treating tenosynovitis of this utility model;

[0032] Figure 8This is a cross-sectional view of the first fixing sleeve and the second connecting head of the improved small needle knife for treating tenosynovitis of this utility model;

[0033] Figure 9 This is a cross-sectional view of the second fixing sleeve and the first connecting head of the improved small needle knife for treating tenosynovitis according to this utility model;

[0034] Figure 10 This is a schematic diagram of another embodiment of the improved small needle knife for treating tenosynovitis according to this utility model. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0036] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.

[0037] like Figure 1 As shown, the improved small needle knife for treating tenosynovitis of this utility model includes: a blade head 1, a needle body 2, a connecting part 3, and a gripping part 4. The blade head 1 is fixedly mounted at the front end of the needle body 2, and the rear end of the needle body 2 is directly connected to the gripping part 4 or fixed to the gripping part 4 through the connecting part 3. The connecting part 3 forms an angle between the axis of the needle body 2 and the gripping part 4. The blade head 1 has an inwardly recessed cutting part 5. Different angles between the blade head 1 and the gripping part 4 are achieved through the connecting part 3 to meet different operational needs. The gripping part 4 facilitates gripping and force application to prevent slippage, and the inwardly recessed cutting part 5 facilitates cutting and separation.

[0038] The cutting section 5 includes a first cutting edge 51 and a second cutting edge 52, which are connected to form an inwardly concave cutting section 5 with an included angle. The inwardly concave cutting section 5 with an included angle facilitates the separation of the tendon sheath.

[0039] The first cutting edge 51 and the second cutting edge 52 are connected to form an angle that is acute, obtuse, or right. Different angles facilitate the separation of tendon sheaths of varying hardness, thus broadening the range of applications.

[0040] During implementation, the angle between the first cutting blade 51 and the second cutting blade 52 is sharper, and the angle between the first cutting blade 51 and the second cutting blade 52 and the front end is also sharper. The sharpness makes it easier to penetrate the harder tendon sheath and separate it. Therefore, different first cutting blades 51 and second cutting blades 52 are selected to form the cutting part 5 of the blade head 1 with an angle, depending on the different symptoms of tenosynovitis.

[0041] like Figure 2 , Figure 3 and Figure 4 As shown, when the first cutting blade 51 and the second cutting blade 52 are connected to form an angle of 60°, they form a 30° tip with the blade head 1, which facilitates puncture and separation of hard tendon sheaths with a long inflammation time; when the first cutting blade 51 and the second cutting blade 52 are connected to form an angle of 90°, they form a 45° tip with the blade head 1, which facilitates puncture and separation of generally hard tendon sheaths with a moderate inflammation time; when the first cutting blade 51 and the second cutting blade 52 are connected to form an angle of 150°, they form a 75° tip with the blade head 1, which facilitates puncture and separation of tendon sheaths with a short inflammation time.

[0042] The first cutting edge 51 and the second cutting edge 52 are of the same length. The fact that the first cutting edge 51 and the second cutting edge 52 are of the same length ensures that the angles of their tips are the same. The same length means that the vertex of the included angle is located in the middle of the cutter head 1, which is suitable for regular peeling cuts.

[0043] like Figure 5 As shown, the first cutting blade 51 and the second cutting blade 52 of this invention have different lengths. By ensuring that the first cutting blade 51 and the second cutting blade 52 have the same length, the angles of their tips are different, thus adapting to the separation of tendon sheaths of varying hardness. The same length means that the vertex of the included angle is located on one side of the blade head 1, and the included angles formed with the blade head 1 are also different, making it suitable for irregular peeling cuts. In specific implementations, when the first cutting blade 51 and the second cutting blade 52 are connected to form a 90° included angle, they form tips of 30° and 60° with the blade head 1, which can be adjusted according to different needs.

[0044] like Figure 6 As shown, the cutting part 5 of this invention is a concave arc-shaped cutting blade 53. The arc-shaped cutting blade 53 allows for the separation of softer tendon sheaths without slipping. The arc shape prevents the tendon sheath from slipping, while the sharp angle formed by the end and the blade head 1 facilitates piercing and cutting. The size of the included angle can also be controlled by the size of the arc.

[0045] like Figure 7 and Figure 8As shown, the connecting part 3 includes: a first fixing sleeve 31, a second fixing sleeve 32, a first connector 33 and a second connector 34. The first fixing sleeve 31 and the first connector 33 are fixedly connected and their axes have an included angle. The second connector 34 is provided at the rear end of the needle body 2. The second fixing sleeve 32 is provided inside the holding part 4. The second connector 34 can be detachably inserted into the first fixing sleeve 31 or the second fixing sleeve 32. The first connector 33 can be detachably inserted into the second fixing sleeve 32.

[0046] The included angle between the axial directions of the first fixing sleeve 31 and the first connector 33 is 110°-130°. This axial angle between the first fixing sleeve 31 and the first connector 33 facilitates operation. The second connector 34 allows for detachable connection to either the first fixing sleeve 31 or the second fixing sleeve 32, and the first connector 33 allows for detachable connection to the second fixing sleeve 32, enabling multiple operational functions. The angle formed between the connecting part 3 and the holding part 4 eliminates the need to bend the needle body 2 when separating the tendon sheath, making operation more convenient. Furthermore, different angles of the connecting part 3 can be selected based on individual differences.

[0047] The first fixing sleeve 31 includes: a first mounting hole 311, a first sliding groove 312, a first limiting groove 313, a second sliding groove 314, and a second limiting groove 315. The outer wall of the first mounting hole 311 is provided with the first sliding groove 312, and the end of the first sliding groove 312 is provided with the first limiting groove 313. The outer wall of the first mounting hole 311 is provided with the second sliding groove 314, and the end of the second sliding groove 314 is provided with the second limiting groove 315. The first sliding groove 312 and the second sliding groove 314 are perpendicular to each other. The perpendicular first sliding groove 312 and the second sliding groove 314 facilitate changing the angle between the cutting edge and the grip part 4 for easy operation. Of course, for a tighter gripping effect, the first sliding groove 312, the first limiting groove 313, the second sliding groove 314, and the second limiting groove 315 are all recessed into the inner wall of the first fixing sleeve 31 and do not need to communicate with the outer wall.

[0048] like Figure 9 As shown, the second fixing sleeve 32 includes a second mounting hole 321, a third sliding groove 322, and a third limiting groove 323. The gripping part 4 has a second mounting hole 321 at its bottom, a third sliding groove 322 on its wall, and a third limiting groove 323 at its end. The second mounting hole 321, third sliding groove 322, and third limiting groove 323 allow for compatible installation of the first connector 33 and the second connector 34, enabling various usage scenarios.

[0049] The outer circumference of the outer wall of the first connector 33 is symmetrically provided with a first limiting block 331 and a second limiting block 332. The first limiting block 331 and the second limiting block 332 are limited in the first limiting groove 313 by the first sliding groove 312, or the first limiting block 331 and the second limiting block 332 are limited in the second limiting groove 315 by the second sliding groove 314, or the first limiting block 331 and the second limiting block 332 are limited in the third limiting groove 323 by the third sliding groove 322.

[0050] The outer circumference of the outer wall of the second connector 34 is symmetrically provided with a third limiting block 341 and a fourth limiting block 342. The third limiting block 341 and the fourth limiting block 342 are confined within the third limiting groove 323 by a third sliding groove 322. The second mounting hole 321, the third sliding groove 322 and the third limiting groove 323 are used to accommodate the installation of the first connector 33 and the second connector 34, enabling use in multiple states.

[0051] The gripping part 4 includes an inner core and an elastic layer, with the outer wall of the inner core covered by the elastic layer. The elastic layer facilitates gripping operation.

[0052] like Figure 10 As shown, the second connector 34 at the rear end of the needle body 2 is directly connected and fixed to the second fixing sleeve 32. The blade head 1 and the grip part 4 have no angle between them, thus having the function of acupuncture.

[0053] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An improved small needle knife for treating tenosynovitis, characterized in that, include: The needle body comprises a cutting head, a needle body, a connecting part, and a holding part. The cutting head is fixedly mounted at the front end of the needle body. The rear end of the needle body is directly connected to the holding part or fixed to the holding part through the connecting part. The connecting part forms an angle between the axis of the needle body and the holding part. The cutting head has an inwardly recessed cutting part. The connecting part includes: a first fixing sleeve, a second fixing sleeve, a first connector and a second connector. The first fixing sleeve and the first connector are fixedly connected and their axes have an included angle. The second connector is provided at the rear end of the needle body. The second fixing sleeve is provided inside the holding part. The second connector can be detachably inserted into the first fixing sleeve or the second fixing sleeve. The first connector can be detachably inserted into the second fixing sleeve. The included angle between the axial directions of the first connector of the first fixed sleeve is 110°-130°.

2. The improved small needle knife for treating tenosynovitis according to claim 1, characterized in that, The cutting portion includes a first cutting edge and a second cutting edge, the first cutting edge and the second cutting edge being connected to form a concave cutting portion with an included angle.

3. The improved small needle knife for treating tenosynovitis according to claim 2, characterized in that, The first cutting edge and the second cutting edge are connected to form an angle that is acute, obtuse or right.

4. The improved small needle knife for treating tenosynovitis according to claim 2 or 3, characterized in that, The first and second cutting blades are of the same length.

5. The improved small needle knife for treating tenosynovitis according to claim 2 or 3, characterized in that, The first and second cutting edges have different lengths.

6. The improved small needle knife for treating tenosynovitis according to claim 1, characterized in that, The cutting part is a concave arc-shaped cutting blade.

7. The improved small needle knife for treating tenosynovitis according to claim 1, characterized in that, The first fixing sleeve includes: a first mounting hole, a first sliding groove, a first limiting groove, a second sliding groove and a second limiting groove. The outer wall of the first mounting hole is provided with a first sliding groove, and the end of the first sliding groove is provided with a first limiting groove. The outer wall of the first mounting hole is provided with a second sliding groove, and the end of the second sliding groove is provided with a second limiting groove. The first sliding groove and the second sliding groove are perpendicular to each other. The second fixing sleeve includes: a second mounting hole, a third sliding groove and a third limiting groove. The bottom of the gripping part is provided with a second mounting hole, the wall of the second mounting hole is provided with a third sliding groove, and the end of the third sliding groove is provided with a third limiting groove.

8. The improved small needle knife for treating tenosynovitis according to claim 7, characterized in that, The outer circumference of the outer wall of the first connector is symmetrically provided with a first limiting block and a second limiting block. The first limiting block and the second limiting block are limited in the first limiting groove by the first sliding groove, or the first limiting block and the second limiting block are limited in the second limiting groove by the second sliding groove, or the first limiting block and the second limiting block are limited in the third limiting groove by the third sliding groove. The outer circumference of the outer wall of the second connector is symmetrically provided with a third limiting block and a fourth limiting block, which are limited in the third limiting groove by a third sliding groove.

9. The improved small needle knife for treating tenosynovitis according to claim 8, characterized in that, The gripping part includes an inner core and an elastic layer, wherein the outer wall of the inner core is covered with the elastic layer.

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