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:
Feb. 20, 2001
Filed:
May. 11, 1999
Qingsheng Zhu, Little Canada, MN (US);
Mark Gryzwa, Woodbury, MN (US);
Geng Zhang, Vadnais Heights, MN (US);
Arthur Olive, Stacy, MN (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
An implantable cardiac rhythm management device adapted to receive and digitize electrocardiogram signals from leads placed on or in the heart and capable of automatically adjusting an evoked response detection threshold dependent upon a modulation of the amplitude of the evoked response. Respiration, activity level, and lead maturation, among others, all effect the modulation of the evoked response and the amplitude of a signal associated with evoked response. The present invention automatically adjusts the evoked response detection threshold to account for this modulation. Without limitation, the automatic adjustment of the evoked response detection threshold may be utilized during an automatic capture verification sequence. In the event of non-capture or fusion beats during an automatic adjustment, the evoked response detection threshold is not adjusted.