Patent Number: 6,569,159

Title: Cell necrosis apparatus

Abstract: A cell necrosis apparatus comprises an elongated delivery device includinga lumen and an energy delivery device. The energy delivery device includesat least a first and a second RF electrode each with a tissue piercingdistal portion. The first and second RF electrodes are positionable in theelongated delivery device in a compacted state and deployable from theelongated delivery device with curvature in a deployed state. The firstand second RF electrodes exhibit a changing direction of travel whenadvanced from the elongated delivery device to a selected tissue site. Atleast one infusion port is coupled to one of the elongated deliverydevice, the energy delivery device, the first RF electrode or the secondRF electrode.

Inventors: Edwards; Stuart D. (Los Altos, CA), Baker; James (Palo Alto, CA), Sharkey; Hugh (Redwood Shores, CA), Lax; Ronald G. (Grass Valley, CA)


International Classification: A61B 18/18 (20060101); A61B 18/14 (20060101); A61N 1/40 (20060101); A61B 18/00 (20060101); A61B 18/12 (20060101); A61B 18/20 (20060101); A61B 18/22 (20060101); A61M 25/00 (20060101); A61B 17/00 (20060101); A61M 3/00 (20060101); A61M 3/02 (20060101); A61N 5/02 (20060101); A61N 5/04 (20060101); A61B 018/18 ()

Expiration Date: 05/22015