| 摘要 |
A tissue sampling system includes an elongate flexible needle sheath with a lumen disposed longitudinally therethrough. A needle may be slidably disposed through the needle sheath and include an elongate flexible shaft body configured to pass through a working channel of an endoscope, with an outer cannula disposed at a distal end of the shaft body and housing a longitudinal needle lumen though its length. A sampling member including an elongate flexible stylet body and a barbed portion extending distally from the stylet body may be disposed slidably through the needle lumen. It may include a body with a distal end and barbs forming a barbed region where the barbs are angled away from the distal end. The barbed region may be configured to be slidably extended out the distal end of the needle lumen, then retracted, and may include an echogenic surface along with the barbs and barb-adjacent surfaces.
|
