Combined electrosurgical-cryosurgical instrument
US6379348B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Mar 15, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Mar 15, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00994
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed towards a combined electrosurgical-cryosurgical instrument for tissue ablation. The instrument comprises a shaft having a proximal end and a distal end, the distal end being electrically and thermally conductive; a radiofrequency insulation sheath surrounding the outer surface of the shaft; a cryo-insulation sheath surrounding a surface of the shaft; a radiofrequency power supply source; a cryogen supply tube within the shaft; and a cryogen supply source connected to the cryogen supply tube. The power source provides electrical energy to the distal end of the shaft, and the cryogen supply tube provides a cryogen to the distal end of the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.