Blood vessel coagulation/stanching device
US5151102A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 31, 1990 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1467
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood vessel coagulation/stanching device for flowing high-frequency current between a pair of forceps with a blood vessel being held between the ends of the forceps to cauterize, coagulate and stanch the blood vessel, the device being characterized in that the blood vessel holding section of the forceps comprises a blood vessel contact member made of an electrically insulating sintered substance with a low thermal conductivity, and the blood vessel contact member being provided on its surface with exposed electrodes at an areal ratio between 5% and 60% to the entire surface of the blood vessel contact member. With this device, the blood vessel contact section of the forceps is not excessively heated, preventing a blood vessel from burning. This eliminates any stanching failure due to removal of a coagulated blood vessel portion and ensures superior coagulation and stanching. In addition, the exposed electrode disposed at the frontest end of the forceps has cutting, coagulation and stanching functions so that a single unit of the device can be used for coagulation, stanching and cutting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.