CN211674452U

CN211674452U - Ferrule for snare

Info

Publication number: CN211674452U
Application number: CN201922369886.8U
Authority: CN
Inventors: 邢程; 张恒; 谢慧慧
Original assignee: Endoclot Plus Co Ltd
Current assignee: Endoclot Plus Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-16
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to a ferrule for a snare, wherein one end part of the ferrule is provided with a convex flat needle, the inner side of the ferrule is provided with a plurality of barbs I extending towards the inside of the ferrule, the other inner side of the ferrule is provided with a plurality of barbs II extending towards the inside of the ferrule, and each barb II is sequentially connected with a gap between a plurality of adjacent barbs I; the utility model provides a when using, prevent the lasso slippage after pricking into pathological change tissue through the barb when lasso shrink to the lasso that the pulling is used for the snare excises pathological change tissue completely, can also utilize the flat needle of lasso tip to reject pathological change tissue, is favorable to excising the lasso that is used for the snare of pathological change tissue.

Description

Ferrule for snare

Technical Field

The utility model relates to the field of medical equipment, in particular to a ferrule for a snare.

Background

A lasso for snare is mainly used for the scope and cooperates a medical equipment of excision of high frequency electricity to various polyps and unnecessary pathological change tissue, a lasso for snare commonly used includes lasso, cover and handle usually, and the sleeve pipe passes through rotatory cap lock on the handle, is provided with on the handle and can follows the gliding slider of handle, installs the seal wire in the cover pipe, and the one end and the lasso of seal wire are connected, and the other end is connected with the slider, still installs the electrode on the slider, and the electrode is connected with the seal wire. When the endoscope is used, a lesion tissue is found under the endoscope, the loop for the snare is inserted to enable the loop to be partially close to the lesion, the handle is pulled outwards, the sliding piece is pushed forwards to open the loop, then the tissue is sleeved, the sliding piece is pulled backwards to tighten the loop to tighten the tissue, the high-frequency electricity is connected with the electrode to cauterize the tissue, and the lesion tissue is cut off. When the loop for the snare with the structure cuts the pathological tissue, the loop for the snare is easy to slip and cannot cover the pathological tissue due to the influence of the shape, the size and the position of the pathological tissue, and the pathological tissue cannot be cut.

In view of the above-mentioned drawbacks, the present designer has made active research and innovation to create a snare loop that solves the above-mentioned problems and is industrially more valuable.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide a ferrule for a snare, which is not easy to slide after being sleeved.

The utility model discloses a lasso for snare, a tip of lasso is established to a bellied flat needle, a lasso inboard be equipped with a plurality of to barb one that extends in the lasso, another inboard of lasso be equipped with a plurality of to barb two that extend in the lasso, each barb two all is adjacent with a plurality of setting is joined gradually in the clearance between the barb one.

Furthermore, the first barb and the second barb are both flat barbs.

Further, the flat portion is composed of a portion of one side of the ferrule and a portion of the other side of the ferrule which are parallel to each other.

Further, the snare further comprises a sleeve and a handle, and the sleeve is locked on the handle through a rotating cap.

Further, a distance between the ferrule on one side between one end portion and the other end portion of the ferrule and the ferrule on the other side between the one end portion and the other end portion of the ferrule is smaller than an inner diameter of the sleeve.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage: when the loop is used, the loop is prevented from slipping after the lesion tissue is punctured by the reverse prick when the loop is contracted, so that the loop for the snare is pulled to completely cut off the lesion tissue, and the lesion tissue can be removed by using the flat needle at the end part of the loop, thereby being beneficial to cutting off the lesion tissue.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic view of the structure of a snare for a snare according to the present invention.

1 ferrule 2 flat needle

3 barb one 4 barb two

5 gap 6 sleeve

7 flat part 8 needle point

9 handle

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

A ferrule for a snare is shown in fig. 1, one end of the ferrule 1 is provided with a protruding flat needle 2, a plurality of barbs I3 extending into the ferrule 1 are arranged on one inner side of the ferrule 1, a plurality of barbs II 4 extending into the ferrule 1 are arranged on the other inner side of the ferrule 1, and each barb II 4 is sequentially connected with a gap 5 between every two adjacent barbs I3.

The utility model provides a principle of a lasso for snare as follows:

when the ferrule 1 is deeply inserted into a pathological tissue and the pathological tissue is sleeved by the ferrule 1 with the first barb 3 and the second barb 4 which can be jointed, the ferrule 1 can well extend out of or retract into the sleeve 6 of the snare, so that when only the flat needle 2 part on the ferrule extends out of the sleeve 6, the pathological tissue can be slowly and continuously scraped or rejected through the flat needle 2 part, when the pathological tissue is scraped or rejected to a certain degree, the ferrule 1 with the barbs in the sleeve 6 can extend out of and sleeve the pathological tissue, the first barb 3 and the second barb 4 which are matched with each other are embedded into the pathological tissue, the pathological tissue is rejected by utilizing the expansion and contraction of the ferrule 1 in the sleeve 6, wherein the first barb 3 is one more than the second barb 4, and thus, a gap 5 formed between the first barbs 3 can be conveniently jointed with each second barb 4, can be inserted into the gap of adjacent barbs.

In this embodiment, in order to make the

barbs

3 and 4 in the ferrule 1 contract into the sleeve 6 after engaging, the

barbs

3 and 4 are both flat barbs.

In the present embodiment, in order to facilitate retraction of the flat needle 2 into the cannula 6, the flat needle 2 includes a flat portion 7 and a needle tip portion 8, the flat portion 7 and the needle tip portion 8 may be integrally formed, and the flat portion 7 is composed of a portion on one side of the ferrule 1 and a portion on the other side of the ferrule 1 which are parallel to each other.

In this embodiment, in order to reach the lesion tissue smoothly before cutting it off, the snare further comprises a sleeve 6 and a handle 9, the sleeve 6 being locked tightly on the handle 9 by rotating the cap.

In the present embodiment, in order to allow both the portion having the barb in the ferrule 1 and the portion of the flat needle 2 to be accommodated in the sleeve 6, the distance between the ferrule 1 on one side between the one end portion and the other end portion of the ferrule 1 and the ferrule 1 on the other side between the one end portion and the other end portion of the ferrule 1 is smaller than the inner diameter of the sleeve 6.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A snare for a snare comprising a snare characterized by: a tip of lasso is established to a bellied flat needle, a lasso inboard be equipped with a plurality of to barb one that extends in the lasso, another inboard of lasso be equipped with a plurality of to barb two that extend in the lasso, each barb two all with a plurality of adjacent clearance between the barb one is in proper order to join the setting.

2. A snare for a snare according to claim 1, wherein: the first barb and the second barb are both flat barbs.

3. A snare for a snare according to claim 1, wherein: the flat needle comprises a flat part and a needle tip part, wherein the flat part is composed of a part of one side of the ferrule and a part of the other side of the ferrule which are parallel to each other.

4. A snare for a snare according to claim 1, wherein: the snare further includes a cannula and a handle, the cannula being locked to the handle by a rotating cap.