The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1999
Filed:
Jun. 13, 1997
Applicant:
Inventors:
Bertram Schilling, Mauenheim, DE;
Udo Trockweiler, Immendingen, DE;
Assignee:
Gebrueder Berchtold GmbH & Co., Tuttlingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
606 34 ; 606 35 ; 606 41 ;
Abstract
An electrosurgical high frequency generator has a high frequency oscillator and, connected thereto, a regulatable power stage to which a patient current circuit with active and neutral electrodes can be connected via an output transformer. Three parameter sensors for the high frequency current, the high frequency voltage and the arc formation are provided at the output circuit and are connected via an interface to a microcomputer which in turn controls the power stage. In accordance with the invention, a tissue impedance sensor is additionally provided which is likewise connected to the microcomputer via the interface.