Tank-type general purpose type radial seal ring for puncture outfit and puncture outfit

Abstract

The invention relates to a common groove radical gasket for a puncture outfit and the puncture outfit. Because the radial gasket is provided with a lithe groove, supporting zones with guide function and a through hole, the supporting zones are connected by the lithe groove, the thickness of the lithe groove is far less than the average thickness of the supporting zones, when a surgical instrument is inserted along tapered guide grooves of the supporting zones, the lithe groove is firstly distorted for holding the surgical instrument so as to achieve the sealing effect because the wall is very thin. When the surgical instrument is shaken, the supporting zones divided by the lithe groove are shaken together, and a sealing ring formed by the lithe groove always holds the surgical instrument to keep the sealing state always, thereby the best dynamic sealing effect is achieved. Especially, the lithe groove is thin, the dynamic sealing effect is good, and the kinetic resistance of the surgical instrument is little. The puncture outfit realizes the free replacement among surgical instruments with 12 mm, 10 mm, and 5 mm in diameter and is convenient for operation.

Description

technical field [0001] The invention relates to a medical device, in particular to a puncture device used in laparoscopic minimally invasive surgery and a sealing ring used in the puncture device. Background technique [0002] In modern medicine, laparoscopic minimally invasive surgery has been more and more widely used. In order to avoid iatrogenic infection, the amount of disposable trocar (Trocar) used in laparoscopic surgery is also increasing. On the basis of performance, simplification of structure and reduction of cost have become the direction of trocar improvement. [0003] The sealing structure of the trocar in the prior art consists of a radial sealing ring and a one-way valve. Among them, there are two kinds of one-way valves, one of which is a spring pressure plate structure, which pushes the baffle plate through the spring plate to press the silicone sealing ring to form a seal. It consists of a spring leaf, a baffle, and a silicone sealing ring. The spring l...

AI Technical Summary

Problems solved by technology

The radial sealing ring adopts a circular structure with a central hole, and adopts a structure that is gradually thinned from the outer edge to the central hole. Easy to leak, poor dynamic sealing effect

Therefore, when using the radial sealing ring of the prior art to use a 5mm surgical instrument on a 10mm trocar, it is necessary to use a conversion sheath, which brings inconvenience to the doctor's operation.

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