Puncture trocar

A puncture needle and trocar technology, applied in the directions of puncture needles, trocars, needles, etc., can solve the problems of inaccurate orientation of the puncture needle and increase the success rate of puncture, so as to reduce the damage, reduce the number of punctures, and increase the success rate. rate effect

Inactive Publication Date: 2011-11-23
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a puncture trocar that can reduce the number of punctures, reduce the damage of channel tissue, and can turn 360 degrees to achieve larger and more target operations. It overcomes the traditional The defects of inaccurate puncture needle orientation and the inability to use one puncture path to reach multiple targets in different directions not only increase the success rate of puncture, but also minimize the damage of the tissue path in front of the target

Method used

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Examples

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] like figure 1 The puncture trocar includes an outer sleeve 1 with a needle point and a series of needle cores 2 with different radians, each needle core 2 can be hidden in the inner cavity of the outer sleeve 1, and the series of needles with different radians Core 2 is used for adapting to different turning angles and is 5~30G, and the arc of this arc-shaped needle core 2 is arranged on the front end of needle core 2 (such as image 3 As shown), the arc-shaped needle core 2 is made of high-elastic material, and the high-elastic material is carbon fiber, which has high specific strength, high specific modulus, high temperature resistance, corrosion resistance, heat transfer and small coefficient of thermal expansion, etc. series of excellent performance, there is a side hole 3 matching with the needle core 2 on the side of the outer sl...

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Abstract

The invention discloses a puncture trocar. The puncture trocar comprises an outer thimble with a needlepoint and needle cores hidden in the outer thimble. The puncture trocar is characterized in that the needle cores are made of elastic materials; the upper segments of the needle cores are arc-shaped; a side hole matched with the arc-shaped needle cores is arranged at the side, which is close to the needlepoint, of the outer thimble; and the side hole is communicated with the inner cavity of the outer thimble so that the puncture frequency is reduced, the puncture success rate is increased, the damage to channel tissues is reduced to the greatest extent, and operation of more bigger targets can be realized.

Description

technical field [0001] The invention relates to a puncture trocar. Background technique [0002] The currently used puncture needles can only be oriented to one target at a time when puncturing a deep target, and it is difficult to grasp the accuracy of the puncture. In this way, if the target is often not punctured, it must be pulled out and re-punctured, which increases the path damage of the tissue in front of the target. And even re-piercing is still difficult to have a successful grasp, as the patent No. 96228930.2 is the multi-functional sleeve puncture needle, which includes an outer sleeve and a needle core. Corresponding holes, the needle core and the outer sleeve are slidingly matched; the edge of the groove is a thin blade, and the outer sleeve is a thin-walled tube; the top of the needle core is a needle point, the lower end is a knob, and the lower part of the outer sleeve is a needle seat. After the puncture is in place, biopsy sampling and needle aspiration c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61B10/02A61M5/32
Inventor 王崇宇刘苗生刘泰华
Owner ZHEJIANG OCEAN UNIV
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