Patent ID: 6277083
Filing Date: 2001-08-21
Classification: A61B

Abstract:
Apparatus for retrieving a tissue volume of predetermined peripheral extent, comprising,a delivery cannula having an outer surface surmounting an interior channel and extending from a proximal end portion along a longitudinal axis to a forward region, having a distal end positionable in confronting adjacency with said tissue volume;a capture component positioned within said delivery cannula interior channel, having an expansible forward portion extending to a forwardly disposed electrically conducting electrosurgical cutting leading edge portion and being extendible and expandable toward an outer peripheral dimension selected for the circumscriptive engagement of said tissue volume peripheral extent when moved along said longitudinal axis to egress from said delivery cannula; anda deployment assembly extending within said interior channel, drivably coupled with said capture component and actuable to effect said movement of said capture component along said longitudinal axis, and for effecting a subsequent contraction of said leading edge portion to provide closure of said capture component leading edge portion, and including a terminal assembly for simultaneously effecting the conduction of electrical energy to said leading edge portion.