End-firing microwave ablation instrument with horn reflection device
US6527768B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2001 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | May 18, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B18/1815
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A microwave ablation instrument including a transmission line having a first conductor and a second conductor suitable for the transmission of microwave energy. A horn antenna device is mounted to the end of the transmission line, and include an outer conductor and an inner conductor. The outer conductor of the horn antenna is electrically coupled to the second conductor of the transmission line, and includes a peripherally extending interior wall flaring outwardly to define a recess therein. The inner conductor of the horn antenna is electrically coupled to the first conductor of the transmission line and terminates in the outer conductor recess. The inner conductor and the outer conductor cooperate to emit an electromagnetic field sufficiently strong to cause tissue ablation in a direction generally away from the flared interior wall of the outer conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.