Cardiac pacemaker adaptive to pysiological requirements
CA 1289626 C · Owner: Chirife, Raul · Inventors: Chirife, Raul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cardiac pacemaker has a pacing pulse generator whose rate is adjusted as a function of the cardiac output requirements of the body that are commensurate with the activity of the individual. The length of the ventricular preejection period (PEP) is governed by body hormones as well as direct nerve action upon the heart in relation to stress. The PEP is determined by marking occurrence of the onset of a natural ECG signal or artificial pacing pulse whichever is first to occur in a heart cycle and, detecting left or right ventricular ejection by a pressure or flow pulse in the arterial system or a volume change in the right ventricle. The length of time between the onset of a natural or …
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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
- Granted September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.