Constant output electrosurgical unit
US4092986A · kind A · utility
407Cited by
7References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1976 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Jun 14, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B18/1206
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical unit which provides a voltage output to a load. An oscator in the unit produces the output of a given frequency. A switching circuit coupled to the oscillator provides an unmodulated RF carrier from the oscillator for use in cutting procedures and a pulse modulated RF voltage from the oscillator for use in coagulation procedures. A feedback circuit is coupled from the output to the input of the oscillator to maintain the output voltage level from the unit at a substantially constant value independent of the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.