1 results about "Needle biopsy" patented technology

The present application relates to the technical field of needle sampling device, and particularly relates 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 is formed in the outer wall of the distal end of the needle tube and communicates with the sliding cavity, and the sampling cavity is used for allowing the tissue to be sampled to enter after puncture positioning; a sampling assembly comprises a cutting head, a piston plate, an inner sliding rod and an outer sliding sleeve, the cutting head is sealingly and slidably arranged in the sliding cavity and can move along 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 the ultrasound guidance, the tissue to be sampled can first enter the sampling cavity, then the cutting head moves forward and rotates to cut in the sliding cavity, and the cut tissue sample can be sucked into the cutting head through the negative pressure formed by the backward movement of the piston plate, so that the number of repeated puncture sampling is reduced.