Handle for electro-surgical blade
US4922903A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Oct 6, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/014
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electro-surgical implement with an improved handle having a cutting mode of operation and a coagulating mode of operation. The implement includes a blade member having an electrically conductive pad area, and a predetermined pattern of electrical conductors. Electrical switch apparatus is contained in the handle member for altering the mode of operation between the cutting mode and coagulating mode when the handle member is in a locked disposition. Apparatus is also contained within the handle member for vibrating the blade member at a predetermined frequency and amplitude sufficient to create cavitation to prevent buildup of tissue and debris, and apparatus for energizing the blade for cutting and coagulating including apparatus for forcing the electrically conductive pad area against the vibration apparatus when the handle member is in a locked disposition. Mechanical switch apparatus is included to allow safe removal of the blade. An electrical cable member having a plurality of conductors therein provides electrical signals to activate the blade member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.