Method and system for radiofrequency ablation of cardiac tissue
US5573533A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1992 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Apr 10, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/0814
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for delivering radiofrequency energy to ablate cardiac tissue comprises a radiofrequency generator and an intravascular catheter. The catheter includes both a radiofrequency ablation electrode and a temperature sensor within its distal end. Delivery of power to the ablation electrode may then be controlled based on electrode temperature using a cascade control system wherein analog temperature controller adjusts the set point to a secondary power controller. Alternatively, power delivered to the patient can be controlled directly based on a power set point. Reuse of the catheter is prevented by a fuse within the catheter which is sensed prier to power delivery and broken prior to disconnection of the catheter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.