Ultra-sharp tungsten needle for electrosurgical knife
US4927420A · kind A · utility
51Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B18/14
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for performing electrosurgery with an ultra-sharp electrode composed of a refractory alloy, said electrode having a blunt end and a tip end, and a method for forming the ultra-sharp electrode by rotating about its axis a vertically held cylindrical rod composed of a refractory alloy and repeatedly withdrawing and replacing the rod into a pool of molten oxidizing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.