Patent ID: 6551311
Filing Date: 2003-04-22
Classification: A61B,A61M,A61N

Abstract:
A cell necrosis apparatus for use with an energy source, comprising:an introducer with a proximal end and a distal end; an energy delivery device including a plurality of electrodes, each electrode having a tissue piercing distal end and being positionable in the introducer as the introducer is advanced through tissue, at least one of said electrodes being deployable with curvature from the introducer; and an advancement and retraction member operatively coupled to the plurality of electrodes to advance and retract the electrodes, said member being adapted for operative coupling to said energy source, and having relatively movable electrode-coupling elements for making and breaking electrical contact when the advancement and retraction member is advanced or retracted, respectively, in an axial direction, thereby to make and break electrical contact between said electrodes and said energy source, respectively.