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:
Apr. 06, 1999
Filed:
Dec. 26, 1996
Frank R Walmsley, North Oaks, MN (US);
Jan-Pieter Heemels, Minneapolis, MN (US);
Cardiac Pacemakers, St. Paul, MN (US);
Abstract
Pacemakers have been known to be provided with a lower rate hysteresis mode in which a range of cardiac activity is supported in a hysteresis loop by a pacemaker. The present invention describes a programmable single or dual chamber pacemaker comprising a sensor device which provides signals indicating a level of cardiac activity. The pacemaker has a standard lower rate hysteresis mode available, but is also provided with a sensor rate hysteresis which may be programmable. The signals from the sensor can cause the pacemaker to operate within a hysteresis loop in which at least one of the A-sense Rate and the V-sense Rate in the sensor rate hysteresis is higher than the similar rate in the lower rate hysteresis.