Radio-frequency ablation system and method using multiple electrodes

US8486065B2 · kind B2 · utility

Assignee

• Wisconsin Alumni Research Foundation · US

Inventors

• Fred T. Lee, Jr. · Madison, US
• Dieter Haemmerich · Charleston, US
• John G. Webster · Madison, US
• Andrew S. Wright · Vancouver, CA
• Chris D. Johnson · Houston, US
• David Mahvi · Middleton, US

Key dates

• Filing date: Jun 10, 2002
• Grant date: Jul 16, 2013
• Expiry date: Apr 10, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2018/1467
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Efficient ablation with multiple electrodes is obtained by rapidly switching electric power to the electrodes. In this way, shielding effects caused by the field around each electrode which would otherwise create cool spots, are avoided. Complex inter-electrode current flows are also avoided.