Radio frequency based ablation system and method with dielectric transformer
US8934989B2 · kind B2 · utility
27Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2009 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | May 16, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1869
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ablation device which transmits radio frequency (RF) energy for the ablation of biological tissues has elongate inner and outer coaxial conductors extending from a proximal portion to a distal portion. An RF antenna is disposed at the distal portion of the device and transmits RF energy for ablation of a tissue region to be treated. Reflection of energy from the tissue or the ablation point is reduced by providing multiple layers of dielectric media about the antenna, or by providing a gradual transition point from the conductors to the antenna tip, by means of a longitudinally stepped dielectric layer transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.