Ultrasonic-guided puncture needle sampling device

By designing an ultrasound-guided puncture needle sampling device, a rotary cutting sampling method was achieved after a single puncture and positioning, solving the problems of low efficiency in multiple punctures and cutting tough tissues, and improving the sampling success rate and sample integrity.

CN122440280AInactive Publication Date: 2026-07-24SHANGHAI EAST HOSPITAL EAST HOSPITAL TONGJI UNIV SCHOOL OF MEDICINE
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Patent Information

Application Number
CN202610852237.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-12
Publication Date
2026-07-24
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing puncture needle sampling devices require multiple punctures to obtain sufficient samples, which makes it difficult to effectively cut tough tissues, and the operation is complicated and carries the risk of sample contamination and loss.

Method used

An ultrasound-guided puncture needle sampling device was designed, comprising a needle tube, a sampling component, and a driving component. After a single puncture and positioning, the sample is drawn in by rotating the cutting head and creating negative pressure through the piston plate. The limiting component ensures operational stability and continuity.

Benefits of technology

It reduces the number of punctures, improves the efficiency of cutting tough tissues and sample integrity, reduces patient discomfort and increases the success rate of sampling.

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Abstract

The invention relates to the technical field of puncture needle sampling devices, in particular to an ultrasound-guided puncture needle sampling device which comprises a needle tube, a sliding cavity is formed in the needle tube, a sampling cavity communicated with the sliding cavity is formed in the outer wall of the far end of the needle tube, and the sampling cavity is used for allowing to-be-sampled tissue to enter after puncture positioning; the sampling assembly comprises a cutting head, a piston plate, an inner sliding rod and an outer sliding sleeve, and the cutting head is arranged in the sliding cavity in a sealed and sliding mode and can move in the axial direction of the needle tube and rotate around the axis of the needle tube. Through cooperation of the needle tube, the sampling cavity, the cutting head, the piston plate, the inner sliding rod, the outer sliding sleeve and the driving assembly, after one-time puncture positioning is completed under ultrasonic guidance, a to-be-sampled tissue can firstly enter the sampling cavity, then the cutting head moves forwards in the sliding cavity and is rotationally cut, and a cut tissue sample can be sucked into the cutting head through negative pressure formed by backward movement of the piston plate; and the times of repeated puncture sampling are reduced.
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