Combined hemofiltration and hemodialysis system
CA 2060902 C · Owner: Ahmad, Suhail · Inventors: Jensen, William; Cole, James J.; Ahmad, Suhail
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hemodialysis system has, a blood circuit and a hemofiltrate circuit interconnected at a , hemo-filter and an air collection chamber. If an infusion of sterile fluid to the returning blood is needed, during the dialysis treatment filtrate in the filtrate circuit is, pumped back into the blood circuit. This is also done to purge the blood circuit of blood and return, it to the patient at the conclusion of a dialysis treatment. A blood, pump in the blood circuit incorporates a flexible vessel in conjunction, with pinch valves which self expand in a controlled manner, from a compressed condition to fill with blood from the patient, in a suction stroke controlled by the patient's blood …
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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 June 20, 1990 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2012.
- 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.