Ejection type bone puncture biopsy surgical instrument assembly

Abstract

The invention discloses an ejection type bone puncture biopsy surgical instrument assembly. The ejection type bone puncture biopsy surgical instrument assembly is characterized in that the assembly comprises a reamer and a puncture biopsy needle; the reamer comprises a reaming needle and a sleeve which is arranged on the reaming needle in a sleeving mode in the axial direction, and a needle handle of the reaming needle and a handle on the tail portion of the sleeve are embedded; the puncture biopsy needle comprises an operating handle with an ejection mechanism, a biopsy needle core which penetrates through the operating handle in the axial direction, and a cutting sleeve tube which is arranged outside the biopsy needle core in a sleeving mode in the axial direction and is movably connected with the ejection mechanism; the internal diameter of the sleeve tube is larger than the external diameter of the cutting sleeve tube. When the ejection type bone puncture biopsy surgical instrument assembly is used for conducting bone puncture biopsy surgery, the reamer is used for reaming a hard bone bed first, and thus the biopsy needle core and the cutting sleeve tube can be effectively prevented from being damaged by the hard bone bed.

Description

technical field [0001] The invention relates to a medical device, in particular to an ejection type bone puncture biopsy operation device assembly. Background technique [0002] The diagnosis of many diseases requires pathological biopsy. In order to obtain pathological tissue, especially the pathological tissue hidden inside the body, puncture sampling is required. In the prior art, there is a tissue cutting biopsy needle, which includes coaxially arranged and matched The needle core and trocar, the end of the needle core is an oblique incision, the needle core is provided with a cutting groove near the end of the needle core, and the end of the needle core is an inward shrinking edge. When biopsy sampling, the needle core and The trocar is pushed into the living tissue at the same time, and it is confirmed by B-ultrasound and other imaging methods that the needle core has reached the pathological position, and the pathological tissue will be embedded in the cutting groove....

AI Technical Summary

Problems solved by technology

[0004] However, for bone biopsy, which is difficult to operate, the biopsy needle needs to penetrate the hard bone layer and take out a small piece of cylindrical bone marrow tissue about 1 cm in length from the bone marrow cavity for pathological examination.

The above-mentioned tissue cutting biopsy needle generally has the problem that the needle is thin and easy to break, thus affecting the smooth implementation of bone biopsy

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