Electrode for coagulation and resection
US5749870A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Aug 23, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1213
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical instrument electrode having a tissue cutting edge disposed along a front portion and a gap having a depth extending along an axis passing through the front portion and a rear portion wherein the depth terminates in a region between the front portion and the rear portion. With such an arrangement, relatively deep gaps may be formed in the electrode without requiring a corresponding increase in the bluntness of the tissue cutting edge. In addition, the electrode has a cross-sectional shape substantially continuously changing along a portion of the electrode from a substantially circular cross-section at a distal end to a substantially rectangular cross-section along the tissue cutting edge. Due to the continuous nature of the change, undesirable electrical arcing due to the shape change is substantially reduced, and is in effect removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.