Electrosurgical apparatus
US4271837A · kind A · utility
55Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1979 |
| Grant date | Jun 9, 1981 |
| Priority date | — |
| Expiry date | Jan 16, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/0066
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an electrosurgical cutting device for the cutting and/or coagulation of tissue with RF current. A cutting electrode and a patient plate are connectable to the terminals of a RF generator. A control system, using a condition change arising at the cutting area during cutting as a controlled value, serves to control the RF current produced by the RF generator as a manipulated variable. The invention is characterized in that, for control of the RF-voltage of the RF generator, the control system responds to d-c voltage that arises at the cutting area during cutting with the RF current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.