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. 20, 2011
Filed:
Dec. 20, 2008
Kristofer J. James, Eagan, MN (US);
Hal M. Propp, Oakdale, MN (US);
Kristofer J. James, Eagan, MN (US);
Hal M. Propp, Oakdale, MN (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
An implantable medical device (IMD), such as a defibrillator, performs a capacitor reform or other temporary high current mode, such as to maintain efficacy of a battery or a high voltage defibrillation energy storage capacitor in spite of non-use. Before performing the capacitor reform or other high current mode, a voltage delay test can be performed. A voltage delay can be declared when an initial battery voltage measurement is less than a later battery voltage measurement during a loaded condition such as the charging of the capacitor. If a voltage delay is present, the capacitor reform or other temporary high current mode is enabled, otherwise, the capacitor reform or other temporary high current mode is inhibited. This saves energy, increasing the life of the IMD before explant.