Electrosurgical apparatus
US4580562A · kind A · utility
Inventors
Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/0066
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical apparatus comprises a high frequency power generator, a high frequency transformer, a handpiece for mounting an electrode, and a connecting cable between the generator and the handpiece. In order to provide an automatic adaptation or adjustment so that the power delivered by the cutting electrode is continuously changed according to the cutting depth, the effective length of the connecting cable has been adapted to the output frequency of the generator so that the transfer characteristic of the cable provides a true ohmic transfer or reflection of the load at the electrode-end of the cable to the generator-end of the cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.