Piston-based ventilator design and operation
CA 2104224 C · Owner: Younes, Magdy · Inventors: Younes, Magdy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improvements in piston-based ventilator design and operation are described. In one aspect individual compensation of, force dissipation within the gas delivery system is effected so that the desired gas pressure is delivered to the patient airway without the necessity for monitoring the actual pressure and using it as feedback. In another aspect a piston (14) is dimensioned, slightly less than the chamber wall (12) of the pump to define a gap (18) through which an acceptable amount of gas may leak but which eliminates the need for a physical seal thereby minimizing the frictional resistance within the pump.
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 February 12, 1992 and granted March 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 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.