Intravascular pressure posture detector
CA 2074826 A1 · Owner: Riff, Kenneth M. · Inventors: Riff, Kenneth M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method for detecting changes in the posture of a patient. Two pressure sensors (32, 36) are chronically implanted at different places (12, 14) in the cardiovascular system. One may be positioned in the right heart (12), for example and the other, placed in the inferior vena cava (14). The positioning is selected for ease of chronic implantation. However the positions, chosen must be such that the differences in pressure with changes in posture are differentially measurable. The differences in pressure changes (90, 92, 94) sensed at the two positions enable electronic circuitry (106) to determine changes in posture of the patient. These changes in posture may be used to …
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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 January 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2013.
- 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.