High-frequency treatment tool
US6736813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2001 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/146
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides a bipolar high-frequency treatment tool for coagulating and incising the vital tissue, comprising a pair of jaws provided at a distal end portion of an elongated member such that they can be closed and opened between a closed position and an open position, an operation unit having a handle provided at a proximal end portion of the elongated member, the operation unit closing and opening the jaws when the handle is operated, a first electrode portion provided at one of the jaws, and a second electrode portion provided at the other of the jaws. When vital tissue is gripped between the jaws, the effective electrode surface of the second electrode portion, which is to be brought into contact with the vital tissue, is smaller than that of the second electrode portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.