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Puncture device

A puncture device and component technology, which is applied in the direction of puncture needles, puncture needles, trocars, etc., can solve the problems of low sealing performance, obvious air leakage, and chronic air leakage of sealing components, so as to achieve improved sealing performance and obvious air leakage Effect

Active Publication Date: 2015-05-13
CHANGZHOU XIN NENG YUAN MEDICAL STAPLER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of the above-mentioned prior art are: the sealing performance of the above-mentioned sealing assembly is low, when the intra-abdominal air pressure is greater than 4KPa, the air leakage is obvious; at the same time, when the intra-abdominal air pressure is less than 4KPa, there is also a chronic air leakage situation

Method used

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Embodiment Construction

[0043] See Fig. 1, the piercer of the present embodiment includes: a sleeve assembly 1, and the housing 2 at the top of the sleeve assembly includes: a conversion cap 2-1 and a sleeve seat 2-2 that are sealed up and down; The seat 2-2 includes: a bowl 2-20, a cylindrical body 2-21 longitudinally connected to the center of the bottom of the bowl 2-20 and integrated with the bowl 2-20, sealed and fixed on the bowl 2 The annular cover plate 2-22 of -20 top, and the stopcock 4 that is located on this bowl-shaped body 2-20 sidewall. The stopcock 4 is used to allow and prevent perfusion fluid from entering or exiting the body cavity through the barrel 2-21;

[0044] The central axis of the conversion cap 2-1 and the sleeve seat 2-2 is provided with a working channel 10 for passing through surgical instruments or puncture rods; a sealing assembly 3 is arranged on the working channel in the conversion cap 2-1, and the sealing assembly 3 top is provided with protector 6.

[0045] The...

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Abstract

The invention relates to a puncture device with better sealing performance, which includes a sealing assembly, which includes a plurality of elastic seals arranged between a pair of rings; each elastic seal includes: a conical thin-walled portion and a The annular part connected to the bottom of the conical thin-walled part; the conical thin-walled part is provided with a fan-shaped notch, and the top of the fan-shaped notch is the top of the conical thin-walled part, and the annular parts of the elastic seals are connected together Stacked in layers, so that the conical thin-walled parts of each elastic seal form a conical seal, and then the surgical instrument passing through the sealing assembly is sealed and movably matched with the sealing assembly; the conical thin-walled part of each elastic sealing The bottom has a circumference of 300-340°; after the surgical instrument passes through the sealing assembly, the side wall of the surgical instrument wraps more tightly with the radial edges of the fan-shaped gaps of each elastic seal, thereby improving the sealing performance, even if the intra-abdominal pressure reaches 8KPa, There are no air leaks either.

Description

technical field [0001] The invention relates to a minimally invasive surgical instrument, in particular to a sealing device for a trocar used in laparoscopic surgery. Background technique [0002] A trocar is a surgical instrument that pierces the abdominal wall and provides a passage for other surgical instruments to enter the body cavity, and belongs to a minimally invasive surgical instrument. [0003] A trocar usually includes a sleeve assembly serving as an access channel for other surgical instruments and a puncture rod penetrating through the sleeve assembly. To penetrate the skin, the epidermis of the skin is first cut with a scalpel, and then the puncture rod penetrates the skin and enters the body cavity. By applying pressure to the proximal end of the piercing rod, pushing the tip of the piercing rod through the skin until the piercer enters the body cavity, and withdrawing the piercing rod, the sleeve assembly can be used as a device for performing endoscopic su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/34
CPCA61B17/3462A61B17/3498A61B2017/3441A61B2017/3464
Inventor 杜强台进杰黄赛冬周利明李盼万建峰黄建设孙东明马博平曹奇
Owner CHANGZHOU XIN NENG YUAN MEDICAL STAPLER
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