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Full-automatic negative-pressure suction rotary cutting type biopsy needle

A negative pressure suction and rotary cutting technology, applied in the field of medical devices, can solve the problems of not being able to do cell biopsy, but only tissue biopsy, etc., to achieve the effect of improving the sampling success rate, sufficient sampling volume, and ensuring safety

Active Publication Date: 2018-01-19
陈召娣
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And these two biopsy needles can only be used for tissue biopsy, not cell biopsy

Method used

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  • Full-automatic negative-pressure suction rotary cutting type biopsy needle
  • Full-automatic negative-pressure suction rotary cutting type biopsy needle
  • Full-automatic negative-pressure suction rotary cutting type biopsy needle

Examples

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Embodiment Construction

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0028] Such as Figure 1-6 As shown, the present invention provides a fully automatic negative pressure suction rotary biopsy needle, including a piston 10, a sleeve 1, a needle core 1 and a needle tube 17, the piston 10 is embedded in the sleeve 1, and the The needle core 11 is fixedly connected to the front end of the piston 10, the needle tube 17 is fixedly connected to the front end of the sleeve 1, the needle tube 17 is provided with a cavity, and the needle core 11 passes through the sleeve in turn. The front end of the barrel 1 and the cavity of the needle tube 17 push the piston 10 to the front end of the sleeve 1, the needle core 11 extends out of the needle tube 17, the piston 10 and the sleeve 1 An autom...

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Abstract

The invention relates to a full-automatic negative-pressure suction rotary cutting type biopsy needle. The biopsy needle comprises a piston, a sleeve, a needle core and a needle tube, the piston is embedded in the sleeve, the needle core is fixedly connected with the front end of the piston, the needle tube is detachably connected with the front end of the sleeve, a cavity is formed in the needletube, and the needle core sequentially penetrates through the front end of the sleeve and the cavity of the needle tube; the piston is pushed to the frontmost end of the sleeve, the needle core extends out of the needle tube, and an automatic retraction device is arranged on the piston and the sleeve; the front end of the needle tube is provided with a rotary cutting device used for cutting humanbody tissue, and a retention device used for retention of the human body tissue in the cavity is further arranged in the cavity of the needle tube; an injection pipe communicated with the cavity is arranged on the side wall of the sleeve. The biopsy needle has the advantages that automatic negative-pressure back suction is achieved, the rotary cutting device at a port of the needle tube is used for rotary cutting, and the retention device in the tube is used for obtaining cylindrical specimens; the sampling quantity under the same caliber is more sufficient, the insertion depth can be controlled, and the safety is guaranteed; the tissue specimens and cytology specimens are sampled at the same time, and dual sampling is achieved.

Description

technical field [0001] The invention relates to a medical device, in particular to a fully automatic negative pressure suction rotary cutting biopsy needle. Background technique [0002] Existing biopsy needles are mainly divided into cutting-type biopsy guns with sampling grooves and manual negative-pressure suction biopsy needles. Cutting-type biopsy guns with sampling grooves can only take samples from the needle grooves, but cannot extract samples from the entire cylindrical needle tube. For samples, the needle core is extended first, the needle tube is then cut, and the depth of insertion into the tissue is uncontrollable, which is unsafe. Manual negative pressure suction biopsy needles cannot automatically generate a negative pressure environment and need to be manually extracted. And these two biopsy needles can only be used for tissue biopsy, not cell biopsy. Contents of the invention [0003] The technical problem to be solved by the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B10/02C12M1/26C12M1/36
CPCY02A50/30
Inventor 王珏
Owner 陈召娣
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