Air-core microwave ablation antennas
US7244254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2005 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Sep 28, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and device delivers microwave power to an antenna through a coaxial cable utilizing air or other gases as its dielectric core. The cable includes supports made of low-loss materials to keep the inner conductor centered in the cable, and defining spaces therebetween for the air or gas. Channels in the supports allow the air or gas to circulate in the cable. The gas may be chilled or cooled to provide an addition level of heat dissipation. The device enables delivery of large amounts of power to tissue without undue heating of the feed cable or peripheral tissues, and without increasing the diameter of the feeding cable or antenna, keeping the antenna safe for percutaneous use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.