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:
Aug. 22, 2000
Filed:
Apr. 26, 1999
Michael Eric Benser, Birmingham, AL (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
Method and apparatus for detecting changes in electrocardiogram signals. A first cardiac electrogram signal is sensed, where the first cardiac electrogram signal has a voltage and includes a first cardiac complex. A ventricular activation is detected in the first cardiac complex and a first timer is started, where the first timer times a first specified time. A first voltage value is measured from the first cardiac electrogram signal at the first specified time after the ventricular activation. A second voltage value is also measured from a defined portion of the first cardiac electrogram signal. A comparison value is then calculated from the first and second voltage values measured from the first cardiac electrogram signal. The first voltage value is recorded when the comparison value is greater than or equal to a predetermined value.