Fingerswitch circuitry to reduce RF leakage current
US10524851B2 · kind B2 · utility
0Cited by
148References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Dec 18, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1286
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical unit having detection circuitry for reducing radiofrequency leakage current in an electrosurgical unit. The electrosurgical unit includes a radiofrequency generator configured to generate electrosurgical energy, the radiofrequency generator including a detection circuit having a resistor ladder and an isolation transformer in electrical communication with the resistor ladder. The detection circuit is configured to detect a change in impedance across the isolation transformer and correlate the change in impedance to one of a plurality of predetermined energy thresholds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.