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. 03, 2013
Filed:
Aug. 23, 2010
David S. Keppel, Longmont, CO (US);
David S. Keppel, Longmont, CO (US);
Covidien AG, , CH;
Abstract
A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal spread. The circuit is preferably provided within an electrosurgical generator which is capable of controlling the amount of energy delivered to a patient during electrosurgery on a per arc basis. Also, a method of controlling arc energy via the circuit is disclosed. The method includes the steps of generating a current via a generating unit and dividing the current into two paths via a diode-resistor block, one path including one of a resistor and a potentiometer in series with a pair of electrical components, wherein arc energy variations produced by the generating unit are controlled by the diode-resistor block.