Improved one-way valve for puncture outfit

Abstract

The present invention relates to a single direction valve used in the micro invasive surgical puncture device of the laparoscopy and the thoracoscopy. In the present invention, the improved single direction valve used in the puncture is arranged in the cavity of the sheath tube tail of the puncture. The single direction valve comprises a V-typed funnel structure. a bottom plate provided with a cutting opening for the puncture rod and a supporting body, which provides sealing pressure to the cutting opening. The supporting structure is connected with the outer part of the bell mouth in the V-typed funnel structure. Symmetric supporting gluten is arranged between the inner part of the supporting body and the inclined plate of the V-typed funnel structure. The supporting gluten distributes in both sides of the cutting opening. Auxiliary gluten with a certain thickness and vertical to the cutting opening is arranged in the prominent part of the outer wall in the supporting body. The single direction valve of the present invention has deliberate structure and convenient manufacture as well as high reliability. The sealing effect during application is excellent. The problem that the cutting opening can be winded towards the pulling direction (teeming laps) when the puncture rod is pulled out from the cutting opening of the single valve is resolved.

Description

technical field [0001] The invention relates to a medical device, in particular to a one-way valve used in minimally invasive surgical trocars (Trocar) such as laparoscopes and thoracoscopes. Background technique [0002] In modern medicine, minimally invasive surgical operations such as laparoscopy and thoracoscopic surgery have been more and more widely used. On the basis of ensuring the performance, simplifying the structure and reducing the cost have become the improvement direction of trocar. [0003] There are mainly two types of one-way valves used in trocars in the prior art. One is a spring-pressing plate structure, which pushes the baffle plate through the spring plate and presses the silicone sealing ring to form a seal. The one-way valve, the spring leaf and the baffle are usually made of stainless steel. This type of one-way valve is often used in the multiple-use metal puncture device. This puncture device is more expensive and heavier. In the past two years,...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an improved one-way valve for puncture device, which has exquisite structure, is easy to manufacture, and has high reliability. When in use, it not only has a good sealing effect, but also solves the problem of the puncture rod from the otch of the one-way valve. When the incision is pulled out, it is easy to roll up the incision in the direction of pulling out (commonly known as "turning the skin")

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