Electrosurgical apparatus for generating radiofrequency energy and microwave energy for delivery into biological tissue
US10188455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2014 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Jul 31, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/103
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An isolating circuit for an electrosurgical generator arranged to produce radiofrequency (RF) energy and microwave energy for treating biological tissues is provided. The generator has an RF channel and a microwave channel which are combined at a signal combiner to enable the RF energy and microwave energy to be delivered into tissues along a common feed path. The isolating circuit includes a tunable wavelength isolator at a junction between the microwave channel and the signal combiner, and can include a capacitive structure between a ground conductor of the signal combiner and a conductive input section of the waveguide isolator to inhibit coupling of the RF energy and leakage of the microwave energy. The isolating circuit can combine into a single tunable unit all the necessary components to isolate the microwave and RF channels from one another while providing a high withstanding voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.