Bone marrow puncture needle

Abstract

The invention provides a bone marrow puncture needle. The bone marrow puncture needle comprises a handle, an outer needle and an inner needle, wherein the handle comprises a depth adjusting mechanism, an inner needle pushing mechanism, an outer needle pushing mechanism and an outer needle pushing-back mechanism, the inner needle pushing mechanism is connected with the inner needle in a clamped mode, the outer needle pushing mechanism is connected with the outer needle in a clamped mode, the outer needle and the inner needle are arranged in an inner containing cavity of the handle in a hidden mode, the inner needle is sleeved with the outer needle, the depth adjusting structure is arranged at an extending end of the needle tip and can adjust an exposed length of the inner needle and an exposed length of the outer needle, the inner needle pushing mechanism can be triggered to enable the inner needle to pop out in an axial direction of the handle, the outer needle pushing mechanism can be triggered to enable the outer needle to pop out in the axial direction of the handle, the outer needle is clamped with the outer needle pushing-back mechanism, and the outer needle pushing-back mechanism can retract the outer needle along the handle. The bone marrow puncture needle can easily adjust a sampling depth, can quickly activate the inner needle and outer needle, shorten a sampling time, and alleviate pain of a patient during sampling.

Description

technical field [0001] The invention relates to the field of valve medical instruments, in particular to a bone marrow puncture needle. Background technique [0002] Bone marrow puncture refers to taking out bone marrow fluid with a bone marrow puncture needle and then smearing it with Rui-Ji staining for backup examination. Bone marrow biopsy refers to obtaining a piece of bone marrow tissue with a bone marrow biopsy needle, and then performing Giemsa staining for backup examination after fixed embedding and sectioning. Both are ways of sampling the bone marrow. [0003] At present, the basic instrument for bone marrow biopsy is the bone marrow biopsy needle. The operation process is basically the same as the puncture process, except that when sampling, the needle core needs to be pulled out and then connected to the post, and then the needle core needs to be inserted. After a certain distance, the needle needs to be rotated for 2 ~6 circles, withdraw the needle at the end...

AI Technical Summary

Problems solved by technology

[0004] Sometimes when the bone marrow biopsy tissue is difficult to sample, the combination of biopsy gun and bone marrow puncture needle is used for sampling. The coordination relationship is complicated, and the quality of the biopsy gun is relatively large. Due to the non-concentric setting of the inner needle and outer needle control excitation structure, the volume is large and the stability is poor.

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