CN204033383U - Biopsy forceps - Google Patents

Abstract

Translated fromChinese

本实用新型公开了一种活检钳，钳头组件包括左钳头、右钳头、左钢丝挂钩、右钢丝挂钩、钳头座和销钉管，左钳头和右钳头通过销钉管铰接安装在钳头座上，左钢丝挂钩和右钢丝挂钩分别与左钳头和右钳头连接，左钢丝挂钩和右钢丝挂钩均在其直线钢丝的前端通过弯折成型有连接头部，该连接头部包括一弯折处和一折叠处，弯折处由一次弯折形成并连接直线钢丝和折叠处，折叠处由一次180°折叠形成；左钢丝挂钩和右钢丝挂钩的连接头部分别穿接在左钳头和右钳头尾端的钳头孔上，连接头部的弯折处穿设在钳头孔内，连接头部的折叠处大于钳头孔的孔径从而限制其从钳头孔中脱出。本技术方案结构简单可靠，易于大批量生产，生产成本低。

The utility model discloses a biopsy forceps. The clamp head assembly includes a left clamp head, a right clamp head, a left steel wire hook, a right steel wire hook, a clamp head seat and a pin tube. The left clamp head and the right clamp head are hingedly installed on the On the clamp head seat, the left steel wire hook and the right steel wire hook are respectively connected with the left clamp head and the right clamp head. Both the left steel wire hook and the right steel wire hook have connecting heads formed by bending at the front ends of their straight steel wires. The connecting heads It includes a bend and a fold, the bend is formed by one bend and connects the straight steel wire and the fold, the fold is formed by one 180° fold; the connecting heads of the left wire hook and the right wire hook are respectively connected to On the pliers hole at the tail end of the left pliers head and the right pliers head, the bending part of the connecting head is pierced in the pliers head hole, and the folding part of the connecting head is larger than the aperture of the pliers head hole so as to limit its escape from the pliers head hole . The technical solution has a simple and reliable structure, is easy to produce in large quantities, and has low production cost.

Description

Translated fromChinese

活检钳biopsy forceps

技术领域technical field

本实用新型涉及一种医疗器械，特别是一种钢丝挂钩式内窥镜活检钳。The utility model relates to a medical device, in particular to a steel wire hook type endoscopic biopsy forceps.

背景技术Background technique

目前，用于内窥镜下取活体组织的取样钳技术已经较为成熟，钳头结构从简单到复杂已经过多代更新，从四连杆结构到钢丝挂钩结构节省了四个零件，成本有所下降。钢丝挂钩的形状也有具体的专利限制，例如波斯顿科学公司申请的“Z”字形结构，以及南京微创申请的“吊环”结构。“Z”字结构(参见专利文献CN202619718U)在用力过大时存在拉脱的风险，“吊环”结构(参见专利文献CN2824840Y)多一次焊接，造成成本升高。At present, the technology of sampling forceps for taking living tissue under the endoscope is relatively mature. The structure of the forceps head has been updated for many generations from simple to complex. Four parts are saved from the four-link structure to the wire hook structure, and the cost is reduced. decline. The shape of the wire hook also has specific patent restrictions, such as the "Z" shape structure applied by Boston Scientific Corporation, and the "ring" structure applied by Nanjing MicroPort. The "Z" structure (see patent document CN202619718U) has the risk of being pulled off when the force is too large, and the "hanging ring" structure (see patent document CN2824840Y) is welded one more time, resulting in an increase in cost.

发明内容Contents of the invention

为了解决上述的技术问题，本实用新型的目的是提供一种活检钳，采用结构简单、可靠、成本低的钢丝挂钩式内窥镜活体取样钳钳头，解决“Z”字结构拉脱的风险和“吊环”增加成本的不足。In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a biopsy forceps, which adopts the steel wire hook type endoscopic living body sampling forceps with simple structure, reliability and low cost, and solves the risk of "Z" structure pulling off And "hanging rings" add to the lack of cost.

为了达到上述的目的，本实用新型采用了以下的技术方案：In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

一种活检钳，包括钳头组件，所述钳头组件包括左钳头、右钳头、左钢丝挂钩、右钢丝挂钩、钳头座和销钉管，左钳头和右钳头通过销钉管铰接安装在钳头座上，左钢丝挂钩和右钢丝挂钩分别与左钳头和右钳头连接，所述左钢丝挂钩和右钢丝挂钩均在其直线钢丝的前端通过弯折成型有连接头部，该连接头部包括一弯折处和一折叠处，弯折处由一次弯折形成并连接直线钢丝和折叠处，折叠处由一次180°折叠形成；左钢丝挂钩和右钢丝挂钩的连接头部分别穿接在左钳头和右钳头尾端的钳头孔上，连接头部的弯折处穿设在钳头孔内，连接头部的折叠处大于钳头孔的孔径从而限制其从钳头孔中脱出。A biopsy forceps, comprising a clamp head assembly, the clamp head assembly includes a left clamp head, a right clamp head, a left steel wire hook, a right steel wire hook, a clamp head seat and a pin tube, and the left clamp head and the right clamp head are hinged through the pin tube Installed on the clamp head seat, the left steel wire hook and the right steel wire hook are respectively connected with the left clamp head and the right clamp head, and the left steel wire hook and the right steel wire hook are all formed with a connecting head by bending at the front end of the straight steel wire. The connection head includes a bend and a fold, the bend is formed by one bend and connects the straight steel wire and the fold, the fold is formed by one 180° fold; the connection head of the left steel wire hook and the right steel wire hook They are pierced respectively on the pincer hole at the tail end of the left pincer head and the right pincer head. out of the head hole.

作为优选，所述弯折处由一次90°弯折形成，折叠处的折叠方向和弯折处的弯折方向相同。Preferably, the bend is formed by a 90° bend, and the folding direction of the fold is the same as the bending direction of the bend.

所述左钳头和右钳头为粉末冶金成形或者冲压成形。所述左钳头和右钳头的钳口为平口形或带齿形。The left and right pincers are formed by powder metallurgy or stamping. The jaws of the left pincer head and the right pincer head are flat or toothed.

本实用新型由于采用了以上的技术方案，解决了“Z”字结构拉脱的风险，避免拉伤内镜，减少手术时间，减轻患者痛苦。解决了“吊环”结构焊接工序的成本增加，减少焊接激光对人体的伤害。本实用新型结构简单可靠，方便制造，方便检验，合格率高，易于大批量生产，生产成本低。Due to the adoption of the above technical scheme, the utility model solves the risk of the "Z" structure pulling off, avoids straining the endoscope, reduces operation time, and relieves patients' pain. It solves the cost increase of the welding process of the "hanging ring" structure, and reduces the damage of the welding laser to the human body. The utility model has the advantages of simple and reliable structure, convenient manufacture and inspection, high qualified rate, easy mass production and low production cost.

附图说明Description of drawings

图1是本实用新型的立体图；Fig. 1 is a perspective view of the utility model;

图2是本实用新型钢丝挂钩的结构示意图；Fig. 2 is the structural representation of the utility model steel wire hook;

图3是钢丝挂钩与钳头的连接示意图。Fig. 3 is a schematic diagram of the connection between the wire hook and the pliers head.

具体实施方式Detailed ways

下面结合附图对本实用新型的具体实施方式做一个详细的说明。Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.

实施例1：Example 1:

如图1所示的一种活检钳，包括钳头组件，所述钳头组件包括左钳头5、右钳头4、左钢丝挂钩2、右钢丝挂钩3、钳头座1和销钉管6，左钳头5和右钳头4通过销钉管6铰接安装在钳头座1上，左钢丝挂钩2和右钢丝挂钩3分别与左钳头5和右钳头4连接，所述左钢丝挂钩2和右钢丝挂钩3均在其直线钢丝21的前端通过弯折成型有连接头部，如图2、图3所示，该连接头部包括一弯折处22和一折叠处23，弯折处22由一次弯折形成并连接直线钢丝21和折叠处23，折叠处23由一次180°折叠形成；左钢丝挂钩2和右钢丝挂钩3的连接头部分别穿接在左钳头5和右钳头4尾端的钳头孔上，连接头部的弯折处22穿设在钳头孔内，连接头部的折叠处23大于钳头孔的孔径从而限制其从钳头孔中脱出。A kind of biopsy forceps as shown in Figure 1, comprises forceps head assembly, and described forceps head assembly comprises left forceps head 5, right forceps head 4, left steel wire hook 2, right steel wire hook 3, forceps head base 1 and pin tube 6 , the left pincer head 5 and the right pincer head 4 are hingedly installed on the pincer head seat 1 through the pin tube 6, and the left steel wire hook 2 and the right steel wire hook 3 are respectively connected with the left pincer head 5 and the right pincer head 4, and the left steel wire hook 2 and the right wire hook 3 are formed with a connecting head at the front end of its straight steel wire 21 by bending, as shown in Figure 2 and Figure 3, the connecting head includes a bend 22 and a fold 23, the bend The part 22 is formed by one bending and connects the straight steel wire 21 and the folding part 23, and the folding part 23 is formed by one 180° folding; On the pliers hole of the pliers 4 tail ends, the bending part 22 of the connecting head is pierced in the pliers hole, and the folding part 23 of the connecting head is larger than the aperture of the pliers hole so as to limit its deviating from the pliers hole.

本实施例中，所述弯折处22由一次90°弯折形成，折叠处23的折叠方向和弯折处22的弯折方向相同。所述左钳头5和右钳头4为冲压成形。所述左钳头5和右钳头4的钳口为带齿形。In this embodiment, the bending portion 22 is formed by one 90° bending, and the folding direction of the folding portion 23 is the same as that of the bending portion 22 . The left pliers 5 and the right pliers 4 are formed by stamping. The jaws of the left pincer 5 and the right pincer 4 are toothed.

钳头组件装配时，左钢丝挂钩直线端从左钳头孔中穿接，至左钢丝挂钩的成形端头部折叠处为止，右钢丝挂钩直线端从右钳头孔中穿接，至右钢丝挂钩的成形端头部折叠处为止；再将两根钢丝挂钩的直线端从钳头座上方穿进，下方穿出；最后将左钳头、右钳头通过T形销钉管穿接固定在钳头座上，将T形销钉管的另一端翻边铆接固定在钳头座上，形成钳头的装配。When the pliers head assembly is assembled, the straight end of the left steel wire hook is passed through the hole of the left pliers head until it reaches the folding place of the formed end of the left steel wire hook, and the straight end of the right steel wire hook is passed through the hole of the right pliers head to the right steel wire The forming end of the hook ends at the folding point; then the straight ends of the two steel wire hooks are passed through the top of the clamp head seat and passed out from the bottom; finally, the left clamp head and the right clamp head are fixed on the clamp through the T-shaped pin tube. On the head seat, the other end of the T-shaped pin tube is riveted and fixed on the clamp head seat to form the assembly of the clamp head.

需要强调的是：以上仅是本实用新型的较佳实施例而已，并非对本实用新型作任何形式上的限制，凡是依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本实用新型技术方案的范围内。It should be emphasized that: the above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modification, equivalent change and Modifications still belong to the scope of the technical solution of the utility model.

Claims (4)

1. a biopsy forceps, comprise binding clip assembly, described binding clip assembly comprises left binding clip (5), right binding clip (4), left steel wire hook (2), right steel wire hook (3), binding clip seat (1) and pin-fin tube (6), left binding clip (5) and right binding clip (4) are hingedly mounted on binding clip seat (1) by pin-fin tube (6), left steel wire hook (2) is connected with left binding clip (5) and right binding clip (4) respectively with right steel wire hook (3), it is characterized in that, described left steel wire hook (2) and right steel wire hook (3) all have connection header in the front end of its straight line steel wire (21) by bending forming, this connection header comprises a bending place (22) and a burst (23), bending place (22) is by being once bent to form and connecting straight line steel wire (21) and burst (23), burst (23) by one time 180 ° be folded to form, the connection header of left steel wire hook (2) and right steel wire hook (3) respectively cross-under on the binding clip hole of left binding clip (5) and right binding clip (4) tail end, the bending place (22) of connection header is located in binding clip hole, and the burst (23) of connection header is greater than the aperture in binding clip hole thus limits it and deviate from from binding clip hole.

2. a kind of biopsy forceps according to claim 1, is characterized in that, described bending place (22) by one time 90 ° be bent to form, the folding direction of burst (23) is identical with the overbending direction of bending place (22).

3. a kind of biopsy forceps according to claim 1, is characterized in that, described left binding clip (5) and right binding clip (4) are powder metallurgy formation or stamping.

4. a kind of biopsy forceps according to claim 1, is characterized in that, the jaw of described left binding clip (5) and right binding clip (4) is flat mouth shape or band profile of tooth.