Improved retaining valve for puncture outfit

A technology of one-way valve and puncture device, which is applied in the direction of puncture needle, valve, application, etc., which can solve the problems of turning over the skin and rolling up the incision, and achieve the effect of good sealing effect, easy manufacture, and exquisite structure

Active Publication Date: 2008-03-12
周泰立 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, has high reliability, and not only has good sealing effect during u

Method used

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  • Improved retaining valve for puncture outfit
  • Improved retaining valve for puncture outfit
  • Improved retaining valve for puncture outfit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Improved one-way valve

[0032] As shown in Figures 1 to 4, the improved one-way valve for the trocar according to the present invention has a V-shaped funnel structure 11 on the upper part, and a slit 12 (preferably a linear incision) for the trocar to pass through is provided on the bottom surface. ), the lower part of the one-way valve is a supporting body 13 with a ∧-shaped structure, and the supporting body 13 is connected to the bottom surface of the ∧-shaped funnel structure 11. The support body 13 is a tubular structure with a circular or elliptical cross section, and the ∧-shaped structure of the support body 13 is formed by its internal supporting surfaces, whereby the ∨-shaped funnel structure 11 and the support body 13 form a closed A one-way valve with an X-shaped cross section. The bottom surface of the support body 13 is provided with symmetrical support ribs 17 (preferably "S" shaped ribs), and the support ribs 17 are distributed on both s...

Embodiment 2

[0034] Embodiment 2: Improved one-way valve

[0035] As shown in Figures 5 to 8, the improved one-way valve for the piercer according to the present invention has a V-shaped funnel structure 11 at the top, and a slit 12 (preferably a linear slit) for the piercer to pass through is provided on the bottom surface. ), the lower part of the one-way valve is a supporting body 13 with a ∧-shaped structure, and the supporting body 13 is connected to the bottom surface of the ∧-shaped funnel structure 11. The ∧-shaped structure of the support body 13 is formed by supporting arms that cooperate with each other, whereby the ∨-shaped funnel structure 11 and the support body 13 constitute an open one-way valve with an X-shaped cross section. The bottom surface of the support body 13 is provided with symmetrical support ribs 17 (preferably "S" shaped ribs), and the support ribs 17 are distributed on both sides of the otch 12. through-hole 16. As shown in FIGS. 5 to 7 , auxiliary ribs 18 ...

Embodiment 3

[0037] Embodiment three: the trocar equipped with the one-way valve of the present invention

[0038]According to the technical solution of the present invention, the one-way valve 1 of the present invention is designed and manufactured by using flexible medical materials such as medical-grade silica gel, medical polyurethane, and medical rubber. Referring to the design scheme of the puncture device in the prior art, select medical plastics to manufacture the sheath tube 2, upper cover 3, puncture rod 4, upper cover sealing ring 5, limit block 6, and vent valve 7 of the puncture device respectively, and assemble according to the design drawings . First install the one-way valve 1 of the present invention on the tail of the sheath tube 2, the height of the one-way valve 1 is slightly larger than the installation size for installing the one-way valve 1 on the tail of the sheath tube 2, and the stopper 6 is snap-fitted and installed; The limit block 6 can also be ultrasonically ...

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PUM

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Abstract

The present invention relates to a single direction valve used in the micro invasive surgical puncture device of the laparoscopy and the thoracoscopy. I 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 in the upper part, a bottom plate provided with a cutting opening for the puncture rod. The lower part of the single direction valve is the supporting body of a reverse V shape. The supporting body is connected with the bottom plate of 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. The via holes for airflow are arranged between each supporting gluten. 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,...

Claims

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Application Information

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IPC IPC(8): A61M39/22A61B17/34A61B17/94
Inventor 周泰立李艳芳周星
Owner 周泰立
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