CN110169810A - A kind of slide plate knife of carpal tunnel syndrome - Google Patents

Abstract

A skateboard knife for carpal tunnel syndrome. The base is divided into an operating section, a pinching section and a holding section. The operating section, the pinching section and the holding section are of an integrated structure; The rear end of the operation section gradually becomes thinner toward the front end of the operation section. A blade is arranged on the operation section. The blade is perpendicular to the operation section. The front edge of the blade faces the front section of the operation end. The front end is connected to the rear end of the operating section, and the rear end is connected to the holding section, and the holding section forms an included angle with the pinching end. The circular arc at the front end of the base of the present invention can suppress the median nerve below the carpal tunnel to below the blade to prevent damage by the blade. The edge of the blade cannot exceed the front end of the base, thus avoiding accidental injury to the nerve tissue in front. The pinching section and the holding section are adopted, and the force is more stable when pushing to the inside of the human body. The deficiency of the traditional push knife is improved, and it can be used alone without the cooperation of an endoscope system and the like. The operation cost is low, and it is worthy of popularization and application.

Description

A skateboard knife for carpal tunnel syndrome

technical field

The invention belongs to the technical field of medical devices, and in particular relates to a skateboard knife for carpal tunnel syndrome.

Background technique

Carpal tunnel syndrome (carpal tunnel syndrome) is the most common type of peripheral nerve compression syndrome, which is a series of symptoms and signs caused by the compression of the median nerve in the wrist. It tends to occur at the age of 30 to 50 years, and women are 5 times that of men. Bilateral disease accounts for about 1/3 to 1/2, and the ratio of women to men is 9 to 1. Due to the compression of the median nerve in the wrist, the thumb, index finger, and middle finger produce pain and numbness. In the early stage, it often manifests as sensory dysfunction at the fingertips. It often wakes up due to numbness or burning pain several hours after falling asleep, which is relieved after exercise. A small number of patients Due to the long course of the disease, neurotrophic disorders and thenar muscle atrophy occur. The current treatment methods are mainly conservative treatment and surgical treatment.

The main methods of surgical treatment include traditional open surgery, arthroscopic minimally invasive surgery, single or double small incision minimally invasive surgery. The instrument used to cut the transverse carpal ligament in arthroscopic treatment of carpal tunnel syndrome is a micro-push knife. The bottom of the front end of the micro-push knife is designed with an oval-shaped flat-bottom support. Open U-groove casing (Wolf Company, Germany), and endoscopic system (Sony Company, Japan) were operated. This system has high surgical costs, high surgical skill requirements, and immature surgical techniques, so it is not suitable for single or double small incision minimally invasive surgery in the treatment of carpal tunnel syndrome. If this kind of micro push knife is used for minimally invasive small incision surgery, because the distal end is in the form of a thin sheet without a median nerve protection device, it is easy to cause damage to the cut of the median nerve below the carpal tunnel. Therefore, at present, there is no effective instrument suitable for single or double small incision minimally invasive surgery to incise the transverse carpal ligament, which affects the treatment of carpal tunnel syndrome by single or double small incision minimally invasive surgery, which needs to be solved urgently.

Contents of the invention

The purpose of the present invention is to provide that the base is divided into an operating section, a pinching section and a holding section, and the operating section, the pinching section and the holding section are an integrated structure;

The front end of the operating section is arc-shaped, and gradually becomes thinner from the rear end of the operating section to the front end of the operating section. The operating section is provided with a blade, the blade is perpendicular to the operating section, and the front edge of the blade is Towards the front section of the operating end, the front end of the pinching section is connected to the rear end of the operating section, and the rear end is connected to the holding section, and the holding section and the pinching end form an included angle.

Further, the operating section is 50-60mm, the pinching section is 20-30mm, and the holding section is 50-60mm.

Further, the front section of the operation section forms an angle of 3-6° with the horizontal plane.

Further, the front end of the operating section is smooth but not sharp.

Further, the blade and the operating section are of an integrated structure.

Further, both ends of the blade are provided with cutting edges, the cutting edge at the front end is in the shape of a circular arc protruding forward in the middle, and the cutting edge at the rear end is in the shape of an arc concave inward, and the top end of the blade is smooth.

Further, the distance between the blade and the front end of the operating section is 10-20mm.

Further, the height of the blade is 3-5mm, the width is 15mm, and the thickest part is 2mm.

Further, knurls or stripes are provided on the pinching section to increase friction.

Further, the included angle between the holding section and the pinching section is 130°-160°.

The beneficial effects of the present invention are:

(1) The present invention has a base under the blade, and the arc at the front end of the base can suppress the median nerve below the carpal tunnel to the bottom of the blade to prevent it from being damaged by the blade.

(2) The edge of the blade cannot exceed the front end of the base, thus avoiding accidental injury to the nerve tissue in front.

(3) The pinching section and the holding section are used to make the invention more stable in force when it is pushed to the inside of the human body.

(4) The present invention is simple in structure and easy to use, improves the shortcomings of the traditional push knife, ensures the safety of the median nerve below the carpal tunnel, and can be used alone without the cooperation of an endoscope system. The operation cost is low, and it is worthy of popularization and application.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is a detailed view of the operating section of the present invention.

Reference signs:

1-base; 2-blade; 3-operating section;

4-Pinch segment; 5-Control segment.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Example 1

As shown in Figures 1-3, a skateboard knife for carpal tunnel syndrome consists of a base 1 and a blade 2. The base 1 is divided into an operating section 3, a pinching section 4 and a holding section 5. The operating section 3. The pinching section 4 and the holding section 5 are an integrated structure;

The front end of the operating section 3 is arc-shaped, and gradually becomes thinner from the rear end of the operating section 3 to the front end of the operating section 3. The operating section 3 is provided with a blade 2, and the blade 2 is perpendicular to the operating section 3. The cutting edge on the front side of the blade 2 faces the front section of the operating end, the front end of the pinching section 4 is connected to the rear end of the operating section 3, and the rear end is connected to the holding section 5, and the holding section 5 is connected to the holding section 3. 4 is an included angle.

The operating section 3 is 50-60 mm in length, the pinching section 4 is 20-30 mm in length, and the holding section 5 is 50-60 mm in length.

The front section of the operating section 3 forms an angle of 3-6° with the horizontal plane.

The front end of the operating section 3 is smooth but not sharp.

The blade 2 and the operating section 3 are of an integrated structure.

Both ends of the blade 2 are provided with cutting edges, the front cutting edge is in the shape of an arc protruding forward in the middle, the cutting edge at the rear end is in the shape of an arc concave inward, and the top of the blade 2 is smooth.

The distance between the blade 2 and the front end of the operating section 3 is 10-20mm.

The blade 2 has a height of 3-5 mm, a width of 15 mm, and a thickness of 2 mm at the thickest point.

The pinching section 4 is provided with knurls or stripes to increase friction.

The included angle between the holding section 5 and the pinching section 4 is 130°-160°.

The thickness of the base 1 is 10-15mm.

Example 2

During the operation, a wrist incision of about 2 cm is made longitudinally at the proximal transverse crease of the patient's wrist, and the base is inserted into the wrist incision. The base is between the transverse carpal ligament and the median nerve of the wrist. Press evenly under the base to free the transverse carpal ligament, pinch the index finger against the holding part and push the blade forward at a constant speed. The transverse ligament is cut once, and then the base is slowly moved out. If the forward movement is not cut, the rear edge is cut again when it is moved out, and the wrist incision 1 is sutured subcutaneously 1 to complete the operation process.

It can be understood that the above technical features can be used in any combination without limitation.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A skateboard knife for carpal tunnel syndrome, which consists of a base (1) and a blade (2), characterized in that: The base (1) is divided into an operating section (3), a pinching section (4) and a holding section (5), and the operating section (3), the pinching section (4) and the holding section (5) are integrated structure; The front end of the operating section (3) is arc-shaped, and gradually becomes thinner from the rear end of the operating section (3) to the front end of the operating section (3). The operating section (3) is provided with a blade (2). The blade (2) is perpendicular to the operating section (3), the front edge of the blade (2) faces the front section of the operating end, and the front end of the pinching section (4) is connected to the rear end of the operating section (3) , the rear end is connected with the holding section (5), and the holding section (5) forms an included angle with the pinching end (4). 2. A skateboard knife for carpal tunnel syndrome according to claim 1, characterized in that: the operating section (3) is 50-60mm, the pinching section (4) is 20-30mm, and the The holding section (5) is 50-60mm. 3. The skateboard knife for carpal tunnel syndrome according to claim 1, characterized in that: the front section of the operating section (3) forms an included angle of 3-6° with the horizontal plane. 4 . The skateboard knife for carpal tunnel syndrome according to claim 1 , characterized in that: the front end of the operation section ( 3 ) is smooth but not sharp. 5 . The skateboard knife for carpal tunnel syndrome according to claim 1 , characterized in that: the blade ( 2 ) and the operating section ( 3 ) are in an integrated structure. 6. A skateboard knife for carpal tunnel syndrome according to claim 1, characterized in that: both ends of the blade (2) are provided with cutting edges, and the front cutting edge is in the shape of a circular arc protruding forward in the middle, The cutting edge at the rear end is in the shape of a concave arc, and the tip of the blade (2) is smooth. 7 . The skateboard knife for carpal tunnel syndrome according to claim 1 , wherein the distance between the blade ( 2 ) and the front end of the operating section ( 3 ) is 10-20 mm. 8 . The skateboard knife for carpal tunnel syndrome according to claim 1 , wherein the blade ( 2 ) has a height of 3-5 mm, a width of 15 mm, and a thickness of 2 mm at the thickest point. 9. The skateboard knife for carpal tunnel syndrome according to claim 1, characterized in that: knurls or stripes to increase friction are provided on the pinching section (4). 10. A skateboard knife for carpal tunnel syndrome according to claim 1, characterized in that: the included angle between the holding section (5) and the holding section (4) is 130°-160° .