Electrosurgical devices with balun structure for air exposure of antenna radiating section and method of directing energy to tissue using same
US9603662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Apr 20, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1892
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An energy applicator for directing energy to tissue includes a feedline having an inner conductor, an outer conductor and a dielectric material disposed therebetween, and an antenna assembly having a radiating section operably coupled to the feedline. The energy applicator also includes a first balun structure configured to substantially confine energy to the radiating section when the energy applicator is energized and disposed in tissue, and a second balun structure configured to substantially prevent energy emitted from the radiating section from propagating proximal to the second balun structure along the feedline when the energy applicator is energized but not disposed in tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.