Patent ID: 7014629
Filing Date: 2006-03-21
Classification: A61B,A61F

Abstract:
1. A surgical instrument, comprising a needle having an aspiration inlet port and an internal flow passage arranged so that as an aspiration suction force is applied to the internal flow passage, aspirated tissue is drawn into the aspiration inlet port to pass through the internal flow passage; an infusion sleeve that is configured and arranged to surround at least a portion of the needle and having proximal and distal ends, the infusion sleeve having an infusion portal that includes an external margin that defines at least a portion of an orifice that is arranged closer to the distal end than to the proximal end of the infusion sleeve, the infusion sleeve and the needle being elongated and being spaced from each other to define a gap between for infusion fluid to flow to reach the orifice and emerge through the infusion portal, at least a portion of the external margin and an adjacent portion of an exterior of the sleeve being configured and arranged to be other than perpendicular to each other and other than substantially perpendicular to each other, the external margin being configured and arranged to traverse a thickness of the infusion sleeve and to converge toward an interior of the infusion sleeve while traversing the thickness.