IIIH
US006652516B1
(12) United States Patent ao) Patent No.: us 6,652,516 Bi
Gough (45) Date of Patent: *Nov. 25,2003
(54) CELL NECROSIS APPARATUS
(75) Inventor: Edward J. Gough, Menlo Park, CA (US)
(73) Assignee: Rita Medical Systems, Inc., Mountain View, CA (US)
( * ) Notice: Subject to any disclaimer, the term ol this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
This patent is subject to a terminal disclaimer.
(21) Appl. No.: 09/443,946
(22) Filed: Nov. 19, 1999
Related U.S. Application Data
(63) Continuation of application No. 09/028,436, filed on Feb. 24,1998, now Pat. No. 6,080,150, and a continuation-in-part of application No. 09/020,182, filed on Feb. 6, 1998, now abandoned, which is a continuation-in-part of application No. 08/963,239, filed on Nov. 3, 1997, which is a continuation-in-part of application No. 08/605,323, filed on Feb. 14, 1996, now Pat. No. 5,728,143, which is a continuation-inpart of application No. 08/515,379, filed on Aug. 15, 1995, now Pat. No. 5,683,384.
(51) Int. CI.7 A61B 18/18
(52) U.S. CI 606/41; 607/101
