Patent ID: 9101350
Filing Date: 2015-08-11
Classification: A61B

Abstract:
1. A biopsy needle for use in sampling soft tissue, comprising: an inner tubular member having a lumen and being within an outer tubular member so that said members are slideable with respect to each other along the longitudinal axis of the inner tubular member, said inner tubular member having an external wall and a semi-cylindrical distal portion that subtends an arc of between about 160 to 200 degrees about the longitudinal axis so that said lumen is a semi-cylindrical channel in said distal portion, said distal portion having a planar end surface that is U-shaped and a sharpened edge along the intersection of said planar end surface and said external wall having a sharpened forwardmost portion adapted to puncture tissue; said outer tubular member having a central passage through which said inner tubular member extends, and a distal portion having a planar end surface and a sharpened edge at the intersection of said planar end surface of said outer tubular member and a wall surrounding said central passage, said wall surrounding said central passage that is proximal of the planar end surface of said outer tubular member and opposite said semi-cylindrical distal portion of said inner tubular member having no opening therethrough communicating with said central passage; said biopsy needle further comprising a first textured section in said channel of said inner tubular member, said first textured section having an inward facing surface with one or more raised protrusions extending from the inward facing surface toward the lumen, said first textured section facing a second textured section in said central passage of said outer tubular member, said second textured section having a continuous unbroken external surface.