CN213606710U - Surgical knife - Google Patents

Abstract

The disclosure provides a surgical knife, and relates to the technical field of medical instruments. The surgical cutter comprises a cutter body, wherein one end of the cutter body is provided with a bent nerve hook structure, and the other end of the cutter body is provided with a bent blade structure; the bending direction of the nerve hook structure is opposite to that of the blade structure. In the surgical knife in the embodiment of the present disclosure, one end provided with the nerve hook structure can explore and strip the nerve tissue, and one end provided with the cutting edge structure can cut the narrow deep tissue, so that the surgical knife in the embodiment of the present disclosure can not only strip and separate the nerve tissue, but also cut the tissue, and is convenient to use, safe and wide in application range.

Description

Surgical knife

Technical Field

The present disclosure relates to medical devices, and more particularly to a surgical knife.

Background

The scalpel and the nerve stripper are often needed to be used in spinal surgeries to separate ligamentum flavum tissues and strip nerve tissues, but the scalpel can only cut tissues and does not have stripping and probing functions, and the nerve stripper can only probe and strip nerve tissues and cannot cut the tissues, so that the scalpel and the nerve strippers are combined to strip and separate the nerve tissues and cut other tissues, and the use is safe and convenient.

For example, in a nerve spinal surgery, a dura mater is often cut off, and in the conventional cutting, a small opening is cut off by using a sharp knife, the dura mater is lifted by using a nerve hook, and then the cutting is performed by using the sharp knife. The nerve surgical knife disclosed by the invention can be used for lifting and cutting by using the arc-shaped cutting edge on the inner side. The tool can be well used for hook-picking type excision and downward pressing type excision of the posterior longitudinal ligament of the intervertebral disc tissue;

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a surgical knife, which comprises the following technical scheme:

the surgical knife comprises a knife body, a knife handle,

one end of the cutter body is provided with a bent nerve hook structure, and the other end of the cutter body is provided with a bent blade structure;

the bending direction of the nerve hook structure is opposite to that of the blade structure.

In one embodiment, the blade on the blade structure is disposed within the blade structure to form a pick-and-hook cutter for hook-and-pick excision and detachment of tissue in a narrow deep space.

In one embodiment, the blade on the blade structure is disposed on the exterior of the blade structure, forming a push-down cutter for push-down resection of narrow deep tissue.

In one embodiment, the blade edge structure is provided in an arcuate configuration.

In one embodiment, the length of the blade is set to 3-7mm and the thickness of the blade is set to 1 mm.

In one embodiment, the length of the nerve hook is set to 1-2 cm.

In one embodiment, the cutter body is provided with a hand-held portion at the middle thereof.

In one embodiment, the handheld portion is provided with a plurality of granular protrusions.

In one embodiment, one end of the cutter body is provided with a plurality of first depth scale lines, and the other end of the cutter body is provided with a plurality of second depth scale lines.

In one embodiment, the first shallow and deep graduation mark is no more than 2cm from the nerve hook structure, and the second shallow and deep graduation mark is no more than 3cm from the blade structure;

the intervals between the first depth scale lines and the second depth scale lines are all 1 cm.

In one embodiment, the surgical knife is made of medical stainless steel, and the surface of the surgical knife is subjected to matte treatment.

In the surgical knife in the embodiment of the disclosure, one end provided with the nerve hook structure can explore and peel off the nerve tissue, and one end provided with the cutting edge structure can cut off narrow deep tissue, so that the surgical knife in the embodiment of the disclosure can not only peel off and separate the nerve tissue, but also cut off other tissues, and is convenient to use, safe and wide in application range.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic view of a surgical knife provided in the disclosed embodiment;

FIG. 2 is a schematic view of a surgical knife provided in the disclosed embodiment;

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1-2 are schematic views of the structure of a surgical knife provided in the disclosed embodiment. As shown in fig. 1-2, the surgical knife comprises a knife body 10, wherein one end of the knife body 10 is provided with a bent nerve hook structure 101, and the other end of the knife body 10 is provided with a bent blade structure 102;

the bending direction of the nerve hook structure 101 is opposite to the bending direction of the blade structure 102.

In the surgical knife in the embodiment of the present disclosure, one end provided with the nerve hook structure can explore and strip the nerve tissue, and one end provided with the cutting edge structure can cut the narrow deep tissue, so that the surgical knife in the embodiment of the present disclosure can not only strip and separate the nerve tissue, but also cut the nerve tissue, and is convenient to use, safe and wide in application range.

In one embodiment, as shown in fig. 1, the blade 1021 on the blade structure 102 is disposed within the blade structure 102 to form a hook-on knife for hook-on excision and detachment of tissue in a narrow deep space.

Illustratively, the hook-type cutter in the embodiment of the disclosure can be used for resection of posterior longitudinal ligament in anterior cervical spine surgery and cutting of spinal dura mater.

In one embodiment, as shown in FIG. 2, the blade 1021 of the blade structure upper 101 is disposed outside of the blade structure 102, forming a push-down cutter for push-down resection of narrow deep tissue.

Illustratively, the push-down type cutter in the embodiment of the disclosure can be used for push-down type excision of longitudinal ligaments behind intervertebral disc tissues after intervertebral discs are calcified in degenerative changes of lumbar vertebrae; annular excision of intervertebral disc tissue fibrous ring, and excision stripping of pathological change tissue.

In one embodiment, the blade edge structure is provided in an arcuate configuration.

In the embodiment of the present disclosure, the blade structure is set to be an arc-shaped structure, so as to prevent the blade structure from scratching other tissues in the operation process.

In one embodiment, the length of the blade is set to 3-7mm and the thickness of the blade is set to 1 mm.

In one embodiment, the length of the nerve hook is set to 1-2 cm;

in one embodiment, as shown in fig. 1-2, the cutter body 10 is provided with a hand-held portion 103 at the middle thereof.

In the embodiment of the disclosure, the middle part of the cutter body is provided with the handheld part, so that a user can hold the scalpel conveniently in the operation process.

In one embodiment, the handheld portion is provided with a plurality of granular protrusions.

In the embodiment of the disclosure, the plurality of granular protrusions are arranged on the handheld part to increase the friction force between the hand of the user and the surgical knife in the use process, so that the occurrence that the knife slides from the hand of the user in the surgical process is avoided.

In one embodiment, one end of the cutter body is provided with a plurality of first depth scale lines, and the other end of the cutter body is provided with a plurality of second depth scale lines.

In the embodiment of the disclosure, one end of the cutter body is provided with a plurality of first depth scale marks, and the other end of the cutter body is provided with a plurality of second depth scale marks, so that in the operation process, a user can accurately know the depth of the deep tissue of the operation cutter.

In one embodiment, the first shallow and deep graduation mark is no more than 2cm from the nerve hook structure, and the second shallow and deep graduation mark is no more than 3cm from the blade structure;

the intervals between the first depth scale lines and the second depth scale lines are all 1 cm.

In one embodiment, the surgical knife is made of medical stainless steel, and the surface of the surgical knife is subjected to matte treatment.

In the embodiment of the disclosure, the surgical knife is made of medical stainless steel materials, so that the surgical knife in the embodiment of the disclosure can be repeatedly sterilized and used; and further, the operation cutter is subjected to sub-light treatment, so that the judgment error of a user caused by the reflection of light of the operation cutter in the operation process is avoided, and further accidents are avoided.

It should be noted that the surface matte treatment in the embodiments of the present disclosure is a surface sanding treatment.

It is readily understood that the blade edge structure portions in the embodiments of the present disclosure are not sub-finished.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (10)

1. A surgical knife, which comprises a knife body and is characterized in that,

one end of the cutter body is provided with a bent nerve hook structure, and the other end of the cutter body is provided with a bent blade structure;

the bending direction of the nerve hook structure is opposite to that of the blade structure.

2. The surgical knife of claim 1, wherein the blade of the blade structure is disposed within the blade structure to form a hook-pick knife for hook-pick excision and detachment of tissue in a narrow deep space.

3. The surgical knife of claim 1, wherein the blade of the blade structure is disposed outside of the blade structure to form a push-down knife for push-down resection of tissue at a deep site.

4. A surgical knife according to any one of claims 1 to 3 wherein the blade formation is provided in an arcuate configuration.

5. A surgical knife according to any one of claims 1 to 3 wherein the length of the blade is set to 3 to 7mm and the thickness of the blade is set to 1 mm; the length of the nerve hook is set to be 1-2 cm.

6. A surgical knife according to any one of claims 1 to 3 in which a hand-held portion is provided in the middle of the body of the knife.

7. The surgical knife of claim 6 wherein the handle portion is provided with a plurality of granular protrusions.

8. A surgical knife according to any one of claims 1 to 3 wherein one end of the knife body is provided with a plurality of first depth graduations and the other end of the knife body is provided with a plurality of second depth graduations.

9. The surgical knife of claim 8 wherein the first deep and shallow scale mark is no more than 2cm from the nerve hook structure and the second deep and shallow scale mark is no more than 3cm from the blade structure;

the intervals between the first depth scale lines and the second depth scale lines are all 1 cm.

10. A surgical knife according to any one of claims 1 to 3 wherein the surgical knife is made of a stainless steel material for medical use and has a matte finish on its surface.

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