Method and apparatus for pressure control for maintaining viability of organs
CA 2528036 C · Owner: Brassil, John · Inventors: Foley, John; Schein, Douglas; Millis, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for controlling a pump for delivery of liquid to an organ over a series of fixed-length time intervals ~ each interval ~ comprising a time t 1 1 and a time t 2wherein t 1 + t 2 equals the length of interval ~. The method comprises allowing output pressure of the pump to decrease over time t 1 91 increasing output pressure of the pump over time t 2 comparing achieved pump , output pressure to a predetermined pressure at about the end of interval ~ and at least one of (i) adjusting t 1and t 2 if necessary so the predetermined pressure is approximated by the output pressure at the end of the next interval ~, and (ii) adjusting a rate of change of the output pressure during at …
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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 May 27, 2004 and granted August 6, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2026.
- 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
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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.