Blood pump
CA 2459543 A1 · Owner: Palmer, Arthur · Inventors: Palmer, Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pump assembly especially designed for pumping blood comprises a bladder (12), the interior surface are and volume (24) of which is changeable i.e. it stretches and expands during the filling phase and elastically contracts , to its normal relaxed state during the ejection phase. The bladder had a fluid inlet (16) and a fluid outlet (18). A device such as a vacuum pump, alternately expands and contracts the interior surface area and volume of the bladder. Most of the interior surface area of the bladder expands and contracts in each cycle. One or more check valves (20) or other means for causing substantially one-way fluid flow through the bladder are also provided.
Read the whole patent
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 August 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2024.
- 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.