Design of layered bone marrow puncture needle

Abstract

The invention discloses a design of a layered bone marrow puncture needle. The layered bone marrow puncture needle comprises a needle core, the left end of the needle core is provided with a sphericalhandle, the side face of the needle core is slidably sleeved with an inner-layer sleeve, a locating rod is arranged at the left end of the inner-layer sleeve, the outer side face of the inner-layer sleeve is sleeved with an outer-layer sleeve, a handle is arranged at the left end of the outer-layer sleeve, a tine is arranged at the right end of the side face of the outer-layer sleeve, and a fixing bolt is arranged at the left end of the side face of the outer-layer sleeve. By the adoption of the design of the layered bone marrow puncture needle, while the whole puncture needle enters a marrowcavity, the outer-layer sleeve is fixed to cortex of bone; marrow fluid can be extracted through the inner-layer sleeve, sclerotin can be extracted continuously after the inner-layer sleeve is pulledout, and thus sclerotin detection is facilitated, the defects of repetition and complexity due to the need of twice needle inserting and puncture in a traditional mode are overcome, the work efficiency is improved, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of bone marrow puncture needles, in particular to the design of a layered bone marrow puncture needle. Background technique [0002] Bone marrow aspiration is a common diagnostic technique for collecting bone marrow fluid. Clinically, bone marrow aspiration fluid is often used for blood cell morphology examination, and can also be used for hematopoietic stem cell culture, cytogenetic analysis, and pathogenic biology inspection to assist clinical diagnosis and observe curative effect Traditionally, bone marrow cytological examination and pathological examination need to be performed separately. The first bone marrow biopsy is performed to complete the cytological examination, and then the bone marrow biopsy needle is changed for another puncture to continue drilling for bone marrow pathological examination; the operation is too repetitive cumbersome. Contents of the invention [0003] The technical problem...

AI Technical Summary

Problems solved by technology

[0002] Bone marrow aspiration is a common diagnostic technique for collecting bone marrow fluid. Clinically, bone marrow aspiration fluid is often used for blood cell morphology examination, and can also be used for hematopoietic stem cell culture, cytogenetic analysis, and pathogenic biology inspection to assist clinical diagnosis and observe curative effect Traditionally, bone marrow cytological examination and pathological examination need to be performed separately. The first bone marrow biopsy is performed to complete the cytological examination, and then the bone marrow biopsy needle is changed for another puncture to continue drilling for bone marrow pathological examination; the operation is too repetitive cumbersome

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