Improved atrial defibrillator, lead systems and method
CA 2298288 C · Owner: Kreyenhagen, Paul E. · Inventors: Alferness, Clifton A.; Kreyenhagen, Paul E.; Adams, John M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An implantable atrial cardioverter is arranged to be powered by a depletable power, source for delivering electrical energy to the atria of a human heart in need of cardiversion. The atrial cardioverter comprises: sensing means for sensing electrical activations of the, heart, the sensing means being continuously operable. Means are provided responsive to the, sensing means, for determining the time intervals between said sensed electrical activations. The cardioverter also comprises atrial arrhythmia detector means for detecting the presence of, an atrial arrhythmia of the heart disable means for maintaining the atrial arrhythmia detector, means normally disabled to avoid excessive …
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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
- Filed April 7, 1992 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2014.
- 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.