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. 05, 2017
Filed:
Nov. 06, 2015
Medtronic Ablation Frontiers Llc, Minneapolis, MN (US);
Catherine R. Condie, Shoreview, MN (US);
Marshall L. Sherman, Cardiff by the Sea, CA (US);
Mark T. Stewart, Lino Lakes, MN (US);
Medtronic Ablation Frontiers LLC, Minneapolis, MN (US);
Abstract
Systems and methods for assessing tissue contact, including positioning a plurality of electrodes adjacent a tissue region; delivering radiofrequency energy to the plurality of electrodes, wherein the delivered radiofrequency energy is sufficient to ablate at least a portion of the tissue region; obtaining a plurality of impedance measurements from the plurality of electrodes during the delivery of the radiofrequency energy; calculating a change in the impedance measurements for each of the plurality of electrodes over a pre-determined time period; comparing the calculated change for at least one of the plurality of electrodes to the calculated change in at least one other of the plurality of electrode to determine if there is significant variation in the calculated changes; and terminating the delivery of radiofrequency energy to at least one of the plurality if there is significant variation in the calculated changes.