Title:
APPARATUS FOR ABLATION OF A SELECTED MASS
Document Type and Number:
WIPO Patent Application WO1997006857
Kind Code:
A3
Abstract:
An ablation treatment apparatus has a multiple probe device. The multiple probe device includes a primary electrode/probe/antenna with at least one lumen, a longitudinal axis and an ablative surface area of length L1. The multiple probe device also includes a secondary electrode/probe/antenna that is positioned in a lumen of the primary probe as this last is introduced through tissue. A secondary electrode/probe/antenna distal end is slidingly deployed at a selected tissue site from the primary electrode/probe/antenna lumen in a lateral direction relative to the longitudinal axis. A sensor is at least partially positioned at an exterior of the secondary electrode/probe/antenna along the secondary electrode/probe/antenna distal end. L2 is at least equal to 1/3 L1. An energy source is coupled to the primary electrode/probe/antenna.
Inventors:
GOUGH EDWARD J (US)
STEIN ALAN A (US)
STEIN ALAN A (US)
Application Number:
PCT/US1996/013411
Publication Date:
October 15, 1998
Filing Date:
August 15, 1996
Export Citation:
Assignee:
RITA MEDICAL SYSTEMS INC (US)
GOUGH EDWARD J (US)
STEIN ALAN A (US)
GOUGH EDWARD J (US)
STEIN ALAN A (US)
International Classes:
A61B17/34; A61B18/00; A61B17/22; A61B18/04; A61B18/12; A61B18/14; A61B18/16; A61B18/18; A61N1/06; A61N1/40; A61N5/04; A61B17/00; A61M3/02; A61M25/00; (IPC1-7): A61N5/06; A61N1/40; A61N5/04
Domestic Patent References:
| WO1994026178A1 | 1994-11-24 |
Foreign References:
| DE3838840A1 | 1990-05-23 | |||
| EP0139607A1 | 1985-05-02 |
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