Multi-coating biopsy puncture needle capable of sampling by multiple times

Abstract

A multi-coating biopsy puncture needle capable of sampling by multiple times comprises a biopsy puncture needle core and a needle barrel. A sampling groove is arranged on the biopsy puncture needle core, a tissue pushing block is disposed in an end of the needle barrel, a transverse line which is perpendicular to a long axis of the needle barrel is arranged on the pushing block and faces to the surface of one side of the sampling groove, two sides of the pushing block are inclined surfaces, and an included angle between the inclined surfaces is identical to an included angle between conical inclined surfaces of the biopsy puncture needle core; the length of the sampling groove of the biopsy puncture needle core is increased to be twice larger than the standard length, and a polytetrafluoroethylene coating is covered in the surface of the sampling groove; and the total length of the biopsy puncture needle is larger than or equal to 90mm, the inner diameter of the needle barrel is larger than or equal to 0.64mm, the outer diameter of the needle barrel is larger than or equal to 0.91mm, the length of a cone of a needle tip is 5mm, the included angle of the conical inclined surfaces ranges from 15 degrees to 20 degrees, an included angle of cutting surfaces ranges from 20 degrees to 25 degrees, and polytetrafluoroethylene coatings are covered on the surface of the needle barrel and the surface of the tip end of the biopsy puncture needle core. The multi-coating biopsy puncture needle has the advantages that the multi-coating biopsy puncture needle is simple in structure and convenient in use and can continuously cut viable tissues, cut biopsy tissue strips are complete, operation time is greatly shortened, and sufferings of patients are reduced to the greatest extent.

Description

technical field [0001] The invention belongs to the technical field of medical appliances, in particular to a multi-coated biopsy puncture needle capable of multiple sampling. Background technique [0002] Biopsy is an important measure and method for clinical diagnosis of diseases. The biopsy obtained by biopsy is processed for pathological examination, which plays an important role in guiding clinical medical staff to scientifically formulate treatment plans. With the rapid application and popularization of biopsy technology, the biopsy needles used in clinical practice have been continuously improved, and their safety and efficiency are becoming more and more perfect. However, existing biopsy needles still have some deficiencies in clinical application. Through the research on the currently commonly used biopsy needles, the author found that the commonly used biopsy needles in clinical practice have to pull out the core of the biopsy needle to remove the living tissue af...

AI Technical Summary

Problems solved by technology

However, existing biopsy needles still have some deficiencies in clinical application

Through the research on the currently commonly used biopsy needles, the author found that the commonly used biopsy needles in clinical practice have to pull out the core of the biopsy needle to remove the living tissue after each cutting of living tissue, which cannot achieve the goal of continuously cutting living tissue, and after puncture It is easy to cause serious complications such as tissue and needle tract bleeding and needle tract tumor implantation

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