System and method for voltage and current sensing
US9921243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2013 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Apr 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/06788
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical system is disclosed. The system includes a radio frequency output stage configured to output at least one radio frequency waveform and a current sensor coupled to the output stage and configured to output a first differentiated signal corresponding to a current of the at least one radio frequency waveform, the current sensor coupled to a first conditioning circuit configured to integrate the first differentiated signal to output a processed current signal indicative of the current. The system further includes a voltage sensor coupled to the output stage and configured to output a second differentiated signal corresponding to a voltage of the at least one radio frequency waveform, the voltage sensor coupled to a second conditioning circuit configured to integrate the second differentiated signal to output a processed voltage signal indicative of the voltage, wherein the first and second conditioning circuits have a substantially similar bandpass and phase response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.