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. 30, 1988
Filed:
Dec. 18, 1985
Applicant:
Inventor:
Frank J Callaghan, Miami, FL (US);
Assignee:
Telectronics N.V., , AN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61N / ;
U.S. Cl.
CPC ...
1284 / ;
Abstract
A rate responsive cardiac pacing system is provided. In the illustrative embodiment, electrical stimulus pulses are applied to the heart ventricle and the evoked potential of the applied electrical stimulus pulses is detected. The detected potential is integrated over time to obtain a depolarization gradient duration. The depolarization gradient duration is compared with a corresponding depolarization gradient duration of at least one previous cardiac cycle. The rate of the electrical stimulus pulses is controlled in response to this comparison.