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. 11, 1986
Filed:
Dec. 05, 1984
Van E Mumford, Miami, FL (US);
Louis Sasmor, Miami, FL (US);
Cordis Corporation, Miami, FL (US);
Abstract
A system is provided for detecting pacer mediated tachycardia. Atrial electrical signals (P waves) are sensed and ventricular electrical signals (R waves) are sensed. When a P wave is sensed, after a predetermined AV delay, a stimulating pulse is provided to the ventricle if no R wave is sensed during the AV delay. A threshold rate is selected for the sensed PP interval. If the ventrical has been stimulated and the threshold rate is exceeded for a selected number of PP intervals, the AV delay is increased by a predetermined time (delta). A determination is made whether the next sensed PP interval has increased by delta. If the next sensed PP interval has increased by delta, then pacer mediated tachycardia has occurred. In another embodiment, if the threshold rate is exceeded for a selected number of PP intervals, and the ventricle has been stimulated, then the sensed PP interval is measured and the AV delay is increased to a desired minimum PP interval minus the actual measured PP interval. If the rate continues to be greater than the threshold on the next heartbeat, then pacer mediated tachycardia is not present, and the initial AV delay is reestablished.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile