Patent ID: 7384417
Filing Date: 2008-06-10
Classification: A61B,A61M

Abstract:
1. An air-powered tissue-aspiration instrument system, comprising: an air-powered instrument having a hand-supportable housing supporting a curved dual cannula assembly including wherein said flexible non-conductive inner cannula has a first base portion and an electrically conductive wire molded within the walls thereof which terminates in said second electro-cauterizing electrode extending about the inner aspiration aperture of said flexible hollow inner cannula, for conducting RF power signals from said first base portion to said second electrocauterizing electrode during tissue aspiration operations; wherein said curved hollow outer cannula has a second base portion releasably mounted within said hand-supportable housing, and said first electro-cauterizing electrode extending about the outer aspiration aperture of said curved hollow outer cannula for conducting RF power signals from said second base portion to said first electrocauterizing electrode during tissue aspiration operations, and wherein said flexible hollow inner cannula is slidably supported within said curved hollow outer cannula and driven by a drive mechanism mounted within said hand-supportable housing so as to cause so that the location of said tissue aspiration through said outer and inner suction aspiration is periodically displaced during tissue aspiration operations.