CN202740080U

CN202740080U - Bladder stone forceps

Info

Publication number: CN202740080U
Application number: CN 201220395815
Authority: CN
Inventors: 郭晓波
Original assignee: Shandong Provincial Hospital
Current assignee: Shandong Provincial Hospital
Priority date: 2012-08-11
Filing date: 2012-08-11
Publication date: 2013-02-20
Anticipated expiration: 2022-08-11

Abstract

The utility model relates to a pair of bladder stone forceps for surgeries, which belong to the field of medical equipment. In order to solve the problem that the stone forceps for bladder stone surgeries can easily break stones when in use, the utility model provides the bladder stone forceps. The inner surface of an upper jaw is provided with an upper socket, and the inner surface of a lower jaw is provided with a lower socket. The bladder stone forceps are characterized in that rubber layers are attached on the surfaces of both the upper socket and the lower socket and are extended to the outer surfaces of the upper jaw and the lower jaw. Since the friction coefficient of the rubber layers is high, as a stone is extracted, high upward friction force exists between the stone and the jaws to counteract the weight of the stone, and thereby the jaws can apply low pressure on the stone to prevent the stone from dropping. Since the acting force applied on the stone by the jaws is low, the stone cannot be easily broken. Consequently, the bladder stone forceps prevent the problem that the stone can be broken by the acting force applied on the stone by the jaws, and thereby the difficulty of bladder stone surgeries is decreased.

Description

Bladder stone forceps

Technical field

This utility model relates to the surgical operation bladder stone forceps, belongs to medical instruments field.

Background technology

Bladder stone forceps is to get a kind of apparatus commonly used in the surgical operation of calculus, is used for the gripping calculus.The lithotomy forceps that is usually used at present the vesical calculus operation is comprised of clamp handle and binding clip; Wherein the surface of binding clip is smooth plane.When in use, because calculus out-of-shape, not only hard but also crisp and be coated with tissue fluid or the blood of stick-slip; If firmly too small, between relative two smooth surfaces of binding clip and the frictional force between the calculus will be very little, calculus easily comes off; If firmly excessive, calculus then easy fragmentation causes the calculus cleaning unclean.In the vesical calculus operation, use this kind lithotomy forceps to increase difficulty to operation undoubtedly.Hold caducous problem in order to solve calculus, Chinese patent CN202136386 discloses between a kind of up and down two binding clips and has been the bladder stone forceps of cavity.In calculus placed the binding clip cavity, in the situation that cavity can be airtight, calculus can landing, can be broken yet.Place in the binding clip cavity but work as calculus, in the situation that cavity can not be airtight, contact surface main between binding clip and the calculus is the periphery of binding clip, and contact area is minimum, thereby makes the stressed change of calculus unit are large, on the contrary so that calculus is more prone to broken.

Summary of the invention

In order to solve the lithotomy forceps for the vesical calculus operation, in use easily make the problem of calculus-smashing, this utility model provides a kind of bladder stone forceps.

The technical solution of the utility model:

A kind of bladder stone forceps comprises the binding clip that is comprised of upper grip head and lower pliers head, and clamp handle; The inner surface of upper grip head arranges upper groove, and the inner surface of lower pliers head arranges low groove; It is characterized in that, described upper groove, low groove the equal composite rubber layer in surface, rubber layer extends to the outer surface of upper grip head, lower pliers head; Described rubber is medical grade rubber.Rubber layer possesses certain elasticity and larger coefficient of friction, and is hard unlike the binding clip body, smooth like that.The coefficient of friction of rubber layer is much larger than the coefficient of friction of medical steel, when getting calculus, thereby makes the frictional force of the upward direction that existence is larger between calculus and the binding clip, contends with the gravity of calculus self; Thereby make the less pressure of binding clip effect on calculus, just can stop Gallstone slide.Compare with common lithotomy forceps, keep same calculus not come off from binding clip and adopt the dynamics that adopts when of the present invention can be little a lot; Active force between calculus and the binding clip diminishes, and calculus just is not easy to be caught broken.Therefore avoid active force between binding clip and the calculus large and make the problem of calculus-smashing, thereby reduced the difficulty of vesical calculus operation.

When getting calculus for making, calculus is entered in the groove of binding clip, above-mentioned bladder stone forceps is preferred, the smooth section that the edge of upper grip head, lower pliers head all has a place not wrapped up by rubber layer, smooth section is corresponding with clamp handle, its length is upper grip head or the 0.08-0.2 of lower pliers head total edge length doubly.So avoid the binding clip edge because being wrapped up rust by rubber layer, be not easy the problem that calculus is separated with perienchyma.

The beneficial effects of the utility model:

Bladder stone forceps of the present utility model has easily also solved the problem that calculus easily is caught broken having solved calculus in the problem of landing from binding clip; And this utility model is simple in structure, easy to use.

Description of drawings

Fig. 1 is the structural representation of bladder stone forceps of the present utility model;

Fig. 2 is the structural representation of binding clip inner surface;

Fig. 3 is the structural representation of binding clip outer surface;

Among the figure, 1. upper grip head, 2. lower pliers head, 3. upper groove, 4. low groove, 5. upper plier handle, 6. lower plier handle.7. pivot pin, 8. rubber layer, 9. smooth section.

The specific embodiment

Further specify below in conjunction with accompanying drawing.

Bladder stone forceps of the present utility model comprises clamp handle, and an end of clamp handle is that binding clip, the other end are lever.Clamp handle is divided into upper plier handle 5, lower plier handle 6, by pivot pin 7 the two is cross hinged.Binding clip is divided into upper grip head 1, lower pliers head 2; The inner surface of the two all is the concave surface that caves in, i.e. upper groove 3 and low groove 4 then form closed cavity in binding clip when upper groove 3 and low groove 4 are relative.The surface of upper groove 3 and low groove 4 all adheres to the skim medical grade rubber, and namely rubber layer 8; And make rubber extend to the outer surface of upper grip head 1 and lower pliers head 2, with the edge of upper grip head 1 and lower pliers head 2, except the part relative with clamp handle, in being wrapped in; The edge that is not wrapped up by rubber layer is smooth section 9.The length of this smooth section 8 is upper grip head or lower pliers head total edge length 0.08-0.2 times.

Claims

1. a bladder stone forceps comprises the binding clip that is comprised of upper grip head and lower pliers head, and clamp handle; The inner surface of upper grip head arranges upper groove, and the inner surface of lower pliers head arranges low groove; It is characterized in that, described upper groove, low groove the equal composite rubber layer in surface, rubber layer extends to the outer surface of upper grip head, lower pliers head; Described rubber is medical grade rubber.

2. bladder stone forceps according to claim 1, it is characterized in that, the smooth section that the edge of upper grip head, lower pliers head all has a place not wrapped up by rubber layer, smooth section is corresponding with clamp handle, its length is upper grip head or the 0.08-0.2 of lower pliers head total edge length doubly.