Impedance controlled tissue ablation apparatus and method
US7344533B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2002 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Sep 28, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for carrying our thermal ablation of target tissue is disclosed. The apparatus includes an RF ablation device having a multi-electrode electrode assembly designed to be deployed in target tissue, defining a selected-volume tissue region to be ablated, and having infusion channels for infusing a liquid into the target tissue during the ablation process. A control unit in the apparatus is operably connected to an RF energy source, for controlling the RF power level supplied to the electrodes, and to an infusion device, for controlling the rate of infusion of a liquid through the device into the tissue. During both electrode deployment and tissue ablation, impedance and or temperature measurements made within the tissue are used to control the RF source and infusion device, for optimizing the time and extent of tissue ablation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.