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:
Apr. 20, 2010
Filed:
Aug. 29, 2008
Steven P. Buysse, Longmont, CO (US);
Gary Dobbins, Longmont, CO (US);
Brandon Gay, Superior, CO (US);
David N. Heard, Boulder, CO (US);
James W. Mcpherson, Boulder, CO (US);
Steven P. Buysse, Longmont, CO (US);
Gary Dobbins, Longmont, CO (US);
Brandon Gay, Superior, CO (US);
David N. Heard, Boulder, CO (US);
James W. McPherson, Boulder, CO (US);
Covidien AG, Neuhausen am Rheinfall, CH;
Abstract
A system and method for heat ablation of tissue in which energy is sequentially applied to at least two electrodes inserted into tissue. The system is comprised of a radiofrequency (RF) source for supplying RF energy, at least two electrodes configured to apply RF energy to tissue, at least one return electrode for returning the RF energy to the RF source, and a controller configured to sequentially apply the RF energy to each of the at least two electrodes. The sequential delivery of energy is determined by the measured current and voltage, the calculated impedance at each of the electrodes and the timing for each electrode. An internal load may be activated with the previously activated channel and remain on until the next channel is activated to avoid the generator from having an open circuit.