CN211409340U

CN211409340U - Cutting knife

Info

Publication number: CN211409340U
Application number: CN201922162459.2U
Authority: CN
Inventors: 杨光
Original assignee: Xiluojing Medical Technology Development Shanghai Co ltd
Current assignee: Xiluojing Medical Technology Development Shanghai Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-09-04
Anticipated expiration: 2029-12-05

Abstract

A cutting knife comprises a cutting knife handle and a metal ring, wherein the metal ring comprises a metal ring and a cutting knife fixed at the head of the metal ring. In use, the metal ring can be used for sleeving lesion tissues such as polyps and the like to perform snarling after high-frequency current is applied. The cutter at the head of the metal ring is powered on, so that the function of a high-frequency cutter can be realized, under the condition that the tissue can be removed after the cutting, the edge or the mucous membrane layer of the focus tissue can be cut off firstly, and then the focus tissue can be removed by utilizing the metal ring, so that the function of the high-frequency cutter is realized, the tissue removing function is also realized, an independent high-frequency cutter is not needed, the cost is greatly reduced, and the operation process of the operation is simplified.

Description

Cutting knife

Technical Field

The utility model relates to a medical treatment field specifically is a cutting knife, especially a have simultaneously draw in except with cutting action's cutting knife.

Background

The snare is a medical instrument for endoscopic surgery such as gastrointestinal polypectomy, and is commonly used, such as snares disclosed in the prior art CN201720797829.8, CN201721509291.2, CN201820490024.3, CN201510671208.0, CN200820217190.2, and the like. However, the existing snare can only perform the snarling operation, and in the operation process, the snarling operation can be performed only by cutting the mucosa layer or the edge of the lesion tissue, and at this time, a separate high-frequency cutter is needed, the mucosa layer or the edge of the lesion tissue is firstly cut, and then the snarling operation is performed to snarling the tissue by using the snare, so that the operation is complex, and the high-frequency cutter is expensive and has high cost; in addition, when the metal ring of the existing snare is used for sheathing tissues, particularly when the metal ring is hard to touch certain ulcerative tissues, the tissues are easy to extrude out of the metal ring, and the phenomenon of hollowing is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cutting knife, especially one kind has simultaneously to draw and remove and the cutting knife of cutting effect, can solve current and draw the ware and only have to draw and remove and can't realize the function of cutter, and/or current metal loop when using, organizes to extrude the metal loop easily and cause cover technical problem such as empty.

The scheme is as follows:

a cutting knife comprises a cutting knife handle and a metal ring, wherein the metal ring comprises a metal ring and a cutting knife fixed at the head of the metal ring.

Further, the cutter is a metal wire or a metal cylindrical structure.

Further, at least one fixed tooth is arranged on the inner side of the metal ring.

Further, the fixed teeth are multiple and symmetrically arranged on the inner side of the metal ring.

Furthermore, a high-frequency current connector is arranged on the handle of the cutting knife.

Further, the cutter head is provided with an insulating head.

Further, the insulation head is a cap type insulation head.

Further, the metal ring is in the shape of a nipple-like snare comprising a raised portion.

The utility model discloses a but not limited to following beneficial effect:

in use, the device is energized, and the metal ring can be used to ensheate lesion tissue such as polyps and perform snarling after high frequency current is applied. The function of the (high-frequency) cutter can be realized by electrifying the cutter at the head of the metal ring, under the condition that the tissue can be removed by tightening after the cutting is needed, the edge (or the mucosa layer) of the focus tissue can be cut off firstly, and then the focus tissue is removed by tightening the metal ring, namely the function of the (high-frequency) cutting cutter is realized, the tissue removing function is also realized, an independent high-frequency cutting cutter is not needed, the cost is greatly reduced, and the operation process of the operation is also simplified. The utility model discloses directly form cutter structure on original ware of reining in the ware, it is not only simple and convenient but also practical.

The fixing teeth can be used for fixing and removing tissues, particularly tissues which are hard to touch certain ulcerative tissues, and the tissues can be prevented from being extruded out of the metal ring and being sleeved in the process of tightening the metal ring through the fixing teeth.

The insulating tip prevents the cutting knife from piercing the wall of the intestine or stomach or inadvertently perforating the intestine or the like during the cutting process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments and the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other solutions can be obtained by using these drawings without creative efforts.

Fig. 1 is a schematic structural view of a cutting knife provided by the present invention;

fig. 2 is a schematic structural view of a metal ring of the cutting knife provided by the present invention;

fig. 3 is a schematic structural view of another metal ring of the cutting knife provided by the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

The following are detailed descriptions of the respective embodiments.

As shown in fig. 1, a cutting knife comprises a cutting knife handle 1 and a metal ring 2, wherein the cutting knife handle 1 is a prior art, for example, handle parts disclosed in prior arts such as documents CN201720797829.8, CN201721509291.2, CN201820490024.3, CN201510671208.0, CN200820217190.2, etc. are all suitable for the present invention, wherein, the metal ring 2 comprises a metal ring 3 (the metal ring 3 can be formed by metal wires) and a cutting knife 4 formed at the head of the metal ring 3. According to this embodiment, the device is energized during use, and the metal ring 3 can be used to snare lesion tissues such as polyps and the like after applying a high frequency current for snare removal (as is conventional). The cutter 4 at the head of the metal ring 3 can realize the function of a (high-frequency) cutter due to electrification, the edge (or the mucosa layer) of the focus tissue can be cut off firstly under the condition that the tissue can be removed after the cutting is needed, and then the focus tissue is removed by the metal ring 3, namely the function of the (high-frequency) cutter is realized, the tissue removing function is also realized, an independent high-frequency cutter is not needed, the cost is greatly reduced, and the operation process is simplified.

Further, the cutting knife 4 is a metal wire (e.g. iron wire) or a metal column structure, for example, when the metal ring 3 is formed, a column metal structure is directly fixed on the head of the metal ring 3 or the cutting knife is directly formed by using both ends of the metal ring 3.

Further, at least one fixed tooth 5 is arranged inside the metal ring 3. The fixing teeth 5 can be used for fixing tissues, particularly hard tissues which meet certain ulceration, and the tissues can be prevented from being extruded out of the metal ring and being sleeved during the process of tightening the metal ring through the fixing teeth 5.

Further, a plurality of the fixing teeth 5 are symmetrically arranged on the inner side of the metal ring 3.

Furthermore, a high-frequency current connector (not shown) is arranged on the cutting knife handle 1 and is used for guiding high-frequency current to the metal ring 2. It will be appreciated by those skilled in the art that the high frequency current connector may be located at any position on the handle of the cutting blade as long as it is capable of conducting high frequency current to the ferrule.

Further, the cutting knife 4 is provided at its head with an insulating tip 6 by which the cutting knife is prevented from piercing the intestinal or gastric wall or inadvertently perforating the same during cutting.

Further, the insulation head 6 is a cap type insulation head. Of course, other shapes of the insulator head may be selected by one skilled in the art.

In one embodiment, the metal ring 3 is in the shape of a nipple-like snare comprising a raised portion 7 (as shown in fig. 3). The nipple-like snare more easily concentrates the tissue into the metal loop.

The foregoing is a more detailed description of the present patent with reference to specific preferred embodiments, and the patent is not to be considered as limited to the specific embodiments described herein. To those skilled in the art to which this patent pertains, several simple deductions or substitutions may be made without departing from the spirit of the patent, which shall be deemed to belong to the protection scope of the patent.

Claims

1. A cutting knife comprises a cutting knife handle and a metal ring and is characterized in that the metal ring comprises a metal ring and a cutting knife fixed at the head of the metal ring, and at least one fixed tooth is arranged on the inner side of the metal ring.

2. The cutting burr of claim 1, wherein the cutting burr is a wire or a metallic post-like structure.

3. The cutting burr of claim 1, wherein the stationary teeth are a plurality of teeth symmetrically disposed on an inner side of the metal ring.

4. The cutting burr of claim 1, wherein a high frequency current connection is provided on the handle of the cutting burr.

5. The cutting burr of claim 1, wherein the burr head is provided with an insulating head.

6. The cutting burr of claim 5, wherein the insulation head is a cap insulation head.

7. The cutting burr of claim 1, wherein the metal ring is in the shape of a nipple-like snare including a raised portion.