Surgery – Instruments – Electrical application
Patent
1995-07-10
1997-12-02
Bahr, Jennifer
Surgery
Instruments
Electrical application
606 45, 606 49, 604 35, A61B 1736
Patent
active
056930445
ABSTRACT:
An electro-surgical unit (ESU) pencil apparatus includes an improved handpiece which enables the surgeon to vary the length of working electrode without having to use cutting electrodes of varying lengths. This is achieved by installing the electrode in an assembly that may, as desired by the surgeon, be extended from, or retracted into, the body of the ESU pencil apparatus. An uninterrupted RF signal is supplied to the electrode tip and uninterrupted smoke evacuation for the ESU pencil apparatus as the electrode assembly is expanded or retracted. Additionally, a device is provided for locking the electrode assembly at the desired length, so that it does not move during the operation. The ESU pencil apparatus is also adapted for use with an ESU-argon beam coagulator pencil.
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Bahr Jennifer
Yarnell Bryan K.
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