A bone tissue punch biopsy device and method

The multi-point extrusion strip design, which combines the cutting section with the sampling tube, solves the problem of the elastic sheet being unable to reposition itself, achieving the integrity and accuracy of bone tissue sampling, and the device is reusable.

CN122440239APending Publication Date: 2026-07-24HUNAN YUEDA BIOMEDICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN YUEDA BIOMEDICAL CO LTD
Filing Date
2026-06-10
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing bone tissue puncture sampling devices, the elastic sheet is difficult to fully reset after contraction, which causes the bone tissue to block the inlet and outlet when it is pushed out, resulting in scratches or breakage and affecting the integrity of the sample.

Method used

A bone tissue puncture and sampling device was designed, which uses multiple elastic extrusion strips with the same thickness as the cutting part and the sampling tube. The bone tissue is cut by extrusion at multiple points, and the sampling tube is rotated by a limiting block and threaded connection to avoid the elastic sheet blocking the bone tissue and ensure the integrity of the bone tissue.

Benefits of technology

It effectively avoids bone tissue obstruction caused by the inability of the elastic sheet to reposition, ensures sampling integrity, improves sampling accuracy and the practicality of the device, and is reusable.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122440239A_ABST
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Abstract

The application provides a bone tissue puncture sampler and a sampling method, and belongs to the technical field of medical devices. The sampler comprises a holding part and an outer needle mechanism arranged at the bottom of the holding part. The outer needle mechanism comprises an outer puncture needle which is detachably arranged at the bottom of the holding part. An inner puncture mechanism is arranged in the inner part of the outer puncture needle and used for sealing the hollow part in the inner part of the outer puncture needle. A sampling mechanism is arranged in the inner part of the outer puncture needle and used for rotary cutting sampling. When the sampling tube slides, the elastic extrusion strip is extruded, so that the elastic extrusion strip is bent at the recessed part. Through the synergistic effect of the multi-point extrusion and the protrusions at the two ends and the middle of the recessed part, the bone tissue can be efficiently cut. Compared with the prior art in which an elastic sheet is arranged at the inlet of the sampling tube, the present application can avoid the problem that the elastic sheet cannot be completely reset, prevent the end face from being scraped and damaged due to the blocking of the elastic sheet when the bone tissue is pushed out, and ensure the integrity of the bone tissue. Meanwhile, the device can be recycled and reused after disinfection, and the practicability is further improved.
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