Minimally invasive bone marrow biopsy sampling needle

Abstract

The invention proposes a minimally invasive bone marrow biopsy sampling needle. The sampling needle comprises a needle tube, first and second needle cores, wherein the tail of the needle tube is provided with a main handle, the tails of the first and second needle cores are provided with auxiliary handles, the front end of the first needle core is provided with a triangular pyramid head, the center of the first needle core is provided with a first channel opened to the tail end surface of the first needle core, three pyramidal faces of the triangular pyramid head are provided with connecting channels communicating with the first channel, the center of the second needle core is provided with a second channel opened to the opposite side, the inner cylindrical wall at a terminal end positionof the front end of the second needle core is provided with a separation cone, a cone tip of the separation cone faces the center of the second needle core, and the separation cone is a triangular pyramid. The sampling needle has the advantages that bone marrow smear examination and bone marrow biopsy can be simultaneously carried out in one puncture, the use is reliable, pains of a patient can beeffectively reduced, and a success rate of bone marrow extraction is high.

Description

technical field [0001] The invention relates to the field of medical equipment, belongs to medical technology A61M, and specifically relates to a minimally invasive bone marrow biopsy needle. Background technique [0002] The minimally invasive bone marrow biopsy needle can be used to aspirate bone marrow fluid for bone marrow smear examination, and can also be used to extract bone marrow for bone marrow biopsy. When operating, first disinfect the skin surface and apply anesthetics. First, insert the needle body used for drilling into the needle tube to expose the needle head, and then insert the needle body and the needle tube into the skin until the surface of the bone, and rotate the needle body and the needle tube synchronously. The needle body drills through the bone surface and guides the front end of the needle tube into the bone. After drilling, the needle body is pulled out to extract bone marrow fluid or the needle tube is inserted into the bone marrow needle tube ...

AI Technical Summary

Problems solved by technology

When operating, first disinfect the skin surface and apply anesthetics. First, insert the needle body used for drilling into the needle tube to expose the needle head, and then insert the needle body and the needle tube into the skin until the surface of the bone, and rotate the needle body and the needle tube synchronously. The needle body drills through the bone surface and guides the front end of the needle tube into the bone. After drilling, the needle body is pulled out to extract bone marrow fluid or the needle tube is inserted into the bone marrow needle tube to further rotate the needle tube to extract bone marrow, and then the bone marrow needle tube is pulled out to take out the bone marrow...; However, after drilling During this period, the needle will squeeze the bone powder and discharge it to the bone surface from the back, which will easily cause the bone powder to enter the subcutaneous soft tissue or synovial layer, and may cause bumps after the operation; at the same time, when the bone marrow is removed, the bone marrow that has been cut out by the needle tube will be in a cylindrical shape. directly pull out the bone marrow needle tube, because the cut out bone marrow column and the bone marrow inside the bone are still in a state of adhesion and cannot be taken out, only a second needle insertion can be performed, which reduces the quality of bone marrow extraction

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