Electrosurgical instrument
US6780180B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2000 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Jul 5, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/6027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical instrument, which is used for the treatment of tissue in the presence of an electrically-conductive fluid medium, comprises an instrument shaft (10), and an electrode assembly (12) at one end of the shaft. The electrode assembly (12) comprises a tissue treatment electrode (14) and a return electrode (18) which is electrically insulated from the tissue treatment electrode by means of an insulation member (16). The tissue treatment electrode (14) is exposed at the distal end portion of the instrument (10), and the return electrode (18) has a fluid contact surface spaced proximally from the exposed end of the tissue treatment electrode by the insulation member (16). The exposed end of the tissue treatment electrode (14) is constituted by a plurality of tissue treatment filamentary members made of an electrically-conductive material, the filamentary members being electrically connected to a common electrical supply conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.