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. 06, 1994
Filed:
Sep. 14, 1992
Donald R Merritt, Brooklyn Center, MN (US);
William G Howard, St. Paul, MN (US);
Paul M Skarstad, Plymouth, MN (US);
Douglas J Weiss, Plymouth, MN (US);
Paul B Wyborny, Coon Rapids, MN (US);
Glenn M Roline, Anoka, MN (US);
Lucy M Nichols, Maple Grove, MN (US);
David L Thompson, Fridley, MN (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
A method and apparatus for determination of battery end-of-service in a medical device in which the medical device comprises a cathode limited electrochemical cell having an active metal anode and a manganese dioxide cathode and means for digital telemetry of cell voltage. The sloped, well defined voltage curve of such a cell during cell discharge combined with precise information available through digital telemetry allows for improved determination of battery end-of-service for the medical device.