Radio frequency ablation system and method linking energy delivery with fluid flow
US6666862B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Information indicative of the flow rate of fluid through a biological organ is provided to a processor. Using this information the processor assesses whether the fluid-flow rate is high or low and controls a generator such that the generator provides energy to an electrode positioned within the organ to effect tissue ablation. Energy of a first level is provided during periods of high fluid-flow and energy of a second level, less than the first level, during periods of low fluid-flow. The flow rate information may be provided by an electrocardiograph (ECG) device or a flow sensor. A temperature sensor provides temperature signals to the processor indicative of the electrode temperature. The processor further controls the generator based on the electrode temperature to maintain the temperature at or near a target temperature and below a maximum threshold temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.