Radio frequency energy delivery system for multipolar electrode catheters
US5837001A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1995 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Dec 8, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1273
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A radio-frequency ablation system is disclosed in which the power, voltage, or temperature delivered to multiple electrodes may be dynamically controlled, and in which the electrodes may be simultaneously energized in phase with each other to achieve a desired lesion pattern. The system comprises a multiple electrode ablation catheter, each electrode having a temperature sensor operatively associated therewith. Each electrode is energized by its own RF amplifier, and all of the electrodes are driven in phase with each other by a common sine wave oscillator. A feedback network controls the degree of amplification of the separate RF amplifiers. According to a further aspect of the invention, a modular power supply arrangement is disclosed which is configurable to dynamically control the power, voltage, or temperature delivered to multiple electrodes of a multipolar ablation device. An arbitrary number of electrodes may be simultaneously energized in phase with each other to achieve a desired lesion pattern using the modular power supply by providing a sufficient number of removable modules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.