Electrosurgical instrument
US6491690B1 · kind B1 · utility
1,932Cited by
8References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Mar 23, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical instrument is provided for the treatment of tissue in the presence of an electrically-conductive fluid medium. The instrument comprises an instrument shaft (10), and a tissue treatment electrode (12) at the distal end of the shaft for electrosurgically excising tissue pieces at an operation site. The tissue treatment electrode (12) is cyclically movable relative to the distal end of the shaft (10). Threshold control means are provided for controlling the power threshold for vaporization of the electrically-conductive fluid medium at the tissue treatment electrode (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.