Method and apparatus for controlling pacemaker during automatic capture detection
CA 2191981 C · Owner: Stroebel, John C. · Inventors: Stroebel, John C.; Markowitz, H. Toby
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cardiac pacemaker improves battery longevity by automatically providing optimized threshold amplitude and pulse width values. During capture verification and threshold searching, the pacemaker delivers a pacing pulse and a rapid, maximum amplitude backup pulse in case the pacing pulse fails to capture a patient's heart. Unlike the prior art the backup pulse is delivered , before a predefined Vulnerable Period (during which time pacing might lead to re-entrant tachycardia or fibrillation.) This results in threshold searching which is quick, accurate and with smaller rate drops during loss of capture. In another aspect of the present invention a diagnostic strength-duration , curve …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 19, 1995 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.