Bone marrow puncture needle
A technology for bone marrow puncture and needle core, applied in the field of puncture needles, can solve the problems of increasing the complexity and operation time of puncture operation, increasing physical trauma and economic burden, and increasing the pain of patients, so as to shorten the time of puncture sampling, installation and disassembly, etc. Simple and effective to ensure installation strength
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[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0041] refer to Figure 1-3 , a bone marrow puncture needle, comprising: a needle sheath 1, a needle core 2 and a limiting sleeve 3; The first connecting part 22 and the second connecting part 11; the needle core 2 and the needle cover 1 are connected to each other along the length direction of the needle core 2 through the first connecting part 22 and the second connecting part 21, so that the needle cover 1 is sheathed on the outside of the needle core 2 and exposes the puncture part 21 .
[0042] The ends of the needle sheath 1 and the needle core 2 are respectively connected to a grip part 12, 23; The protruding block 221 is provided with first limiting blocks 222 on both sides of the outer periphery of the protruding block 221 .
[0043] The second connecting part 11 includes an accommodating chamber 111 disposed on the side of the grip...
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