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:
Sep. 17, 2019
Filed:
Aug. 28, 2015
Erbe Elektromedizin Gmbh, Tuebingen, DE;
Sandra Keller, Hechingen, DE;
Marc Kegreiss, Tuebingen, DE;
ERBE ELEKTROMEDIZIN GMBH, Tuebingen, DE;
Abstract
An arrangement having a device for providing high-frequency voltage Ufor contact coagulation of the biological tissue. The device is equipped to operate with a high voltage that is normally not suitable for contact coagulation, but otherwise used for spark coagulation, for example, more than 400V at the beginning of the contact coagulation. During the operation of the generator the tissue impedanceis monitored. This can occur by means of continuously measuring the voltage Uof the flowing current Iand the phasing φ between the voltage and the flowing current. Using both, the measuring unit continuously determines the tissue impedance. A minimum detector is provided to determine if an impedance minimumhas passed through and if such is found, to induce the generator control to reduce the voltage Udelivered by the device to a value that avoids spark generation as well as desiccation of the tissue.