Needle handle sleeve for bone puncture needle

Abstract

The invention relates to a needle handle sleeve for a bone puncture needle, wherein the needle handle sleeve is formed to be a hollow-interior structure with an open front end, a needle handle can be sleeved in a hollow cavity in the needle handle sleeve, and the length of the cavity is greater than the length of the needle handle; the shapes of parts used for placing an adjusting screw and a fixing screw at a front end in the cavity are the same as the shapes of the adjusting screw and the fixing screw of the needle handle; the shape of a part used for placing a needle body cap in the cavity is a cylinder with an elliptic section, and the long diameter and the short diameter of the elliptic section are equal to the long diameter and the short diameter of the elliptic shape of the needle body cap; the shape of a part used for placing a core needle cap in the cavity is a cylinder with a circular section, and the diameter of the circular section is equal to the diameter of the circular shape of the core needle cap; the lengths of two parts used for placing the needle body cap and the core needle cap in the cavity are greater than the lengths of the needle body cap and the core needle cap; and a groove is arranged at the opening of the front end of the needle handle sleeve, and the width and length of the groove are equal to the short diameter and the long diameter of an elliptic front force piece at the front end of the needle handle. The needle handle sleeve disclosed by the invention is simple in structure, suitable for fixing various bone puncture needles, and capable of increasing the handheld area of the needle handle.

Description

technical field [0001] The invention belongs to the technical field of medical and health equipment, and in particular relates to a needle handle cover for a bone puncture needle. Background technique [0002] Bone puncture needle, also known as bone marrow puncture needle, is a puncture needle clinically used to extract bone marrow test samples. At present, the structure of the all-metal bone puncture needle commonly used in clinical practice can be divided into two parts: the needle handle and the needle body. The body cap and core needle cap consist of five parts. The front end of the needle body is a needle point, and the rear end of the needle body passes through the center hole of the front force sheet, the adjusting screw and the fixing screw, and is fixedly connected to the center hole of the needle body cap. The front force sheet is an elliptical sheet structure with a long diameter of 14mm, a short diameter of 11mm, and a sheet thickness of 1mm. The front force s...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the above-mentioned problems of inconvenient hand holding and exerting force and easy fall-off of the core needle existing in the existing bone piercing needles, and provides a bone piercing needle with simple structure, suitable for fixing a variety of different bone piercing needles, and increasing the gripping area of ​​the needle handle. Needle handle cover

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