Ultrasonic visual guide incision device for carpal tunnel syndrome and tenosynovitis

Abstract

The utility model discloses an ultrasonic visual guide cutter for carpal tunnel syndrome and tenosynovitis. The ultrasonic visual guide cutter comprises a guide needle, a cutter body, a cutter handle and a handle. The guide needle is located at the front end of the knife body, and the front end of the guide needle is conical and used for puncturing soft tissue in front of the guide needle and guiding a blade at the tail end of the guide needle to reach target tissue. The cutter body is located at the tail end of the guide needle, a cutter head at the front end of the cutter body is a cutting edge, and other positions of the cutter body are truncated edges; the knife handle is in a Z shape, a tail ring is arranged at the tail end of the knife handle so that the incision device can be conveniently held, and the guide needle and the knife body are provided with grooves or protrusions, or the surfaces of the guide needle and the knife body are plated with metal films so that ultrasonic signal reflection can be improved, and ultrasonic image definition can be enhanced. The incision device is convenient to hold, high in operation stability, small in operation incision and capable of highly reflecting ultrasonic signals, and operation safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a surgical instrument, concretely relates to an ultrasonic visualization guiding cutter for carpal tunnel syndrome and tendon sheath inflammation. BACKGROUND

[0002] Carpal tunnel syndrome (CTS) is a common peripheral nerve compression syndrome, mainly due to increased pressure in the carpal tunnel, causing a series of symptoms and signs of median nerve compression. The carpal tunnel is located in the front of the wrist, which is a pipeline composed of carpal bones and wrist transverse ligament, and the median nerve and multiple flexor tendons pass through it. When the pressure in the carpal tunnel increases or the volume decreases, the median nerve may be compressed, leading to carpal tunnel syndrome. The main symptoms include tingling and numbness in the fingers or hands, usually affecting the thumb, index finger, middle finger and ring finger, but the little finger is not affected. In addition, patients may experience hand weakness and objects falling from their hands, which may be caused by numbness or weakness of the thumb pinch muscle controlled by the median nerve.

[0003] At present, the most effective surgical treatment for carpal tunnel syndrome is open release surgery, that is, a small incision is made on the wrist to cut the transverse ligament to reduce the pressure on the median nerve and improve the functional transmission of the nerve. The utility model aims to provide an ultrasonic visualization guiding cutter to minimize the incision area and improve the problem of unclear display in the existing instrument in the ultrasound image and unstable cutting to ensure the safety of the nerve during the operation. SUMMARY

[0004] The utility model aims to provide an ultrasonic visualization guiding cutter for carpal tunnel syndrome and tendon sheath inflammation, which minimizes the surgical incision and ensures the safety of the nerve during the operation.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an ultrasonic visualization guiding cutter for carpal tunnel syndrome and tendon sheath inflammation, which comprises a guide needle 1, a knife body 3, a knife handle 4 and a handle 5. The guide needle 1 is located at the front end of the knife body 3, the front end of the guide needle 1 is conical, used for piercing soft tissue and guiding the knife body 3 at the tail end to reach the target tissue. The knife body 3 is connected to the tail end of the guide needle 1, the front end of the knife body 1 is a knife head 2, the knife head 2 is a cutting edge, and the rest of the knife body 3 is a blunt edge. The knife handle 4 is arranged in 'Z' shape, the end of the knife handle 4 is the handle 5, and a tail ring 6 is arranged at the end of the handle 5 to facilitate holding the cutter.

[0006] The guide needle 1 and the knife body 3 are located on the same straight line, and the guide needle 1 and the knife body 3 are fixedly connected in a split structure, or they can be an integral structure.

[0007] The utility model discloses still provide a more optimal guide cutter, the included angle of the tool bit 2 and guide needle 1 is 75 DEG.

[0008] The utility model discloses still provide a more optimal guide cutter, the tool bit 2 of included angle of the guide needle 1 and, the tool bit 2 has double edge, is vertical blade 21 and horizontal blade 22 respectively, the included angle of this vertical blade 21 and guide needle 1 is 75 DEG, and the included angle of horizontal blade 22 and vertical blade 21 is right angle.

[0009] The utility model discloses still provide a more optimal guide cutter, the guide needle 1 and the recess or the protrusion of tool body 3 are equipped with.

[0010] The utility model discloses still provide a more optimal guide cutter, the guide needle 1, the surface of tool body 3 of tool bit 2 is sprayed with coating, and the coating can be the metal film with high reflectivity, or the material containing tiny bubble or particle, and the coating has high reflectivity to ultrasonic signal, and is used to improve the ultrasonic image definition of cutter.

[0011] The utility model discloses an ultrasonic visualization guide cutter, has the following advantages:

[0012] The guide cutter provided by the utility model has small guide needle and tool bit, and in the cutting process of lesion wrist transverse ligament, the damage to healthy tissue and wound is small, the damage to nerve, blood vessel and tendon can be effectively avoided, the pain of patient is alleviated, and postoperative recovery is beneficial.

[0013] The cutter provided by the utility model is designed as 'Z' shape, and the stability of operation is improved. Meanwhile, the recess or protrusion is formed in the guide needle and tool bit, or a metal film with high reflectivity is plated on the surface of the cutter, or a coating layer of material containing tiny bubble or particle is coated on the surface of the cutter, the ultrasonic signal can be effectively reflected, the operation is facilitated, and the operation efficiency and safety are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of cutter in the utility model embodiment 1.

[0015] Figure 2 It is the front structure schematic view of guide needle and tool bit in the utility model embodiment 1.

[0016] Figure 3 It is the overhead structure schematic view of guide needle and tool bit in the utility model embodiment 1.

[0017] Figure 4 It is the front structure schematic view of guide needle and tool bit in the utility model embodiment 3.

[0018] In the drawing: 1, guide needle, 2, tool bit, 3, tool body, 4, tool handle, 5, handle, 6, tail ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Embodiment 1

[0021] The embodiment provides an ultrasonic visualization guided cutter for carpal tunnel syndrome and tendon sheath inflammation, referring to Figures 1-3 , comprising a guide needle 1, a cutter body 3, a cutter handle 4 and a handle 5. The guide needle 1 is located at the front end of the cutter body 3, the front end of the guide needle 1 is conical, used for piercing soft tissue and guiding the cutter body 3 at the tail end to reach the target tissue; the cutter body 3 is located at the tail end of the guide needle 1, the cutter head 2 at the front end of the cutter body 3 is a cutting edge, and the rest of the cutter body 3 is a blunt edge; the cutter handle 4 is arranged in a 'Z' shape, and the tail ring 6 is arranged at the end of the handle 5, so that the cutter is held, wherein the guide needle 1 and the cutter body 3 can be an integral structure, or a split structure fixedly connected, and the guide needle 1 and the cutter body 3 are located on the same straight line.

[0022] A more preferred embodiment, the included angle between the cutter head 2 and the guide needle 1 is 75°.

[0023] Embodiment 2

[0024] Compared with embodiment 1, the cutter provided in the embodiment is additionally provided with grooves or protrusions on the guide needle 1 and the cutter body 3.

[0025] Embodiment 3

[0026] Compared with embodiment 1, the cutter provided in the embodiment is additionally provided with a coating on the surfaces of the guide needle 1, the cutter head 2 and the cutter body 3, the coating can be a metal film with high reflectivity, or a material containing micro bubbles or particles, the coating has high reflectivity to ultrasonic signals, and can effectively improve the ultrasonic image definition of the cutter.

[0027] Embodiment 4

[0028] Referring to Figure 4 , the embodiment further provides a cutter, which is different from the cutter in embodiment 1 in that the cutter head 2 of the cutter has double cutting edges, namely a vertical edge 21 and a horizontal edge 22, the included angle between the vertical edge 21 and the guide needle 1 is 75°, and the included angle between the horizontal edge 22 and the vertical edge 21 is a right angle. The cutter provided in the embodiment has double edges, can cut in the vertical direction and the horizontal direction at the same time when entering the carpal tunnel or the tendon sheath lesion, and has higher surgical efficiency. Meanwhile, grooves or protrusions are additionally provided on the guide needle 1 and the cutter body 3, or the coating described in embodiment 3 is sprayed on the surfaces of the guide needle 1, the cutter head 2 and the cutter body 3.

[0029] Although the contents of the present application have been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as limiting the present application. After reading the above contents, various modifications and substitutions of the present application will be apparent to those skilled in the art. Therefore, the protection scope of the present application should be defined by the appended claims.

Claims

1. An ultrasonically visualized dissection guide for carpal tunnel syndrome and tenosynovitis, characterized in that, The guiding incision device comprises a guide needle (1), a blade body (3), a blade handle (4) and a handle (5); The guide needle (1) is located at the front end of the blade body (3), the front end of the guide needle (1) is conical, used for piercing soft tissue and guiding the blade body (3) at the tail end to reach the target tissue; The blade body (3) is connected with the tail end of the guide needle (1), the front end of the blade body (3) is a blade head (2), the blade head (2) is a blade edge, and the rest of the blade body (3) is a blunt edge; The blade handle (4) is arranged in a 'Z' shape, the end of the blade handle (4) is the handle (5), the end of the handle (5) is provided with a tail ring (6), which is convenient for holding the incision device. The guide needle (1) and the blade body (3) are located on the same straight line, and the guide needle (1) and the blade body (3) are fixedly connected in a split structure.

2. The pilot cutter of claim 1 wherein, The guide needle (1) and the blade body (3) can be an integral structure.

3. The pilot cutter of claim 1 wherein, The angle between the blade head (2) and the guide needle (1) is 75°.

4. The pilot cutter of claim 1 wherein, The blade head (2) has double-edged blades, which are vertical blades (21) and horizontal blades (22), the angle between the vertical blades (21) and the guide needle (1) is 75°, and the angle between the horizontal blades (22) and the vertical blades (21) is a right angle.

5. The pilot cutter according to any one of claims 1 to 4, wherein The guide needle (1) and the blade body (3) are provided with grooves or protrusions.

6. The pilot cutter according to any one of claims 1 to 4, wherein The surfaces of the guide needle (1), the blade head (2) and the blade body (3) are sprayed with a coating.

7. The pilot cutter of claim 6 wherein, The coating can be a metal film with high reflectivity, or a material containing micro-bubbles or particles.

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