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:
Dec. 30, 2014
Filed:
Sep. 19, 2013
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Amy Jean Brisben, Saint Paul, MN (US);
Shibaji Shome, Arden Hills, MN (US);
Kenneth N. Hayes, Blaine, MN (US);
Yanting Dong, Lexington, KY (US);
Aaron R. McCabe, Edina, MN (US);
Scott A. Meyer, Lakeville, MN (US);
Kevin John Stalsberg, White Bear Lake, MN (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
An apparatus comprises a cardiac signal sensing circuit, a pacing therapy circuit, and a controller circuit. The controller circuit includes a safety margin calculation circuit. The controller circuit initiates delivery of pacing stimulation energy to the heart using a first energy level, changes the energy level by at least one of: a) increasing the energy from the first energy level until detecting that the pacing stimulation energy induces stable capture, or b) reducing the energy from the first energy level until detecting that the stimulation energy fails to induce capture, and continues changing the stimulation energy level until confirming stable capture or the failure of capture. The safety margin calculation circuit calculates a safety margin of pacing stimulation energy using at least one of a determined stability of a parameter associated with evoked response and a determined range of energy levels corresponding to stable capture or intermittent failure of capture.