Patent ID: 6488636
Filing Date: 2002-12-03
Classification: A61B

Abstract:
A surgical biopsy apparatus, comprising:a base portion having a proximal and a distal end; a first elongated tubular member having a proximal and a distal end and defining a fluid passageway therein, the proximal end of the first elongated member being slidably supported at the proximal end of the base portion and extending longitudinally therefrom, the first elongated tubular member further including: a tip portion disposed at the distal end of the first elongated tubular member and adapted to penetrate tissue; a plurality of openings formed adjacent the distal end of the first elongated tubular member and in fluid communication with the fluid passageway; and a cutting element having a sharpened edge aligned generally longitudinally to facilitate cutting of tissue in a longitudinal direction; a second elongated tubular member having a proximal and a distal end and reciprocatingly disposed coaxially about the first elongated tubular member and being movable from a retracted position to an extended position wherein the distal end of the second elongated member is disposed laterally adjacent the plurality of openings of the first elongated member, the proximal end of the second elongated member being slidably supported at the proximal end of the base portion, the second elongated tubular member defining a tissue receiving portion disposed adjacent the distal end, the tissue receiving portion defining a plurality of openings which are configured and dimensioned to be in fluid communication with the plurality of openings of the first elongated member when the second elongated tubular member is in the extended position; a third elongated tubular member having a proximal and an open distal end and slidably mounted to the base portion and rotatably and reciprocatingly disposed coaxially about the first and second members, the third elongated tubular member including: a cutting edge formed at the open distal end; and a lateral tissue discharge port, the third elongated tubular member being movable from an extended position wherein the cutting edge is disposed adjacent the tip portion of the first elongated tubular member and a retracted position wherein the cutting edge is disposed proximal of the tissue receiving portion of the second elongated tubular member.