Pressure control device for endotracheal tube cuff
CA 2090223 A1 · Owner: Miller, Donald Munro · Inventors: Miller, Donald Munro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure regulating device to be connected between a patient, ventilator and a cuffed endotracheal tube having a body with an, inlet (44) and outlet (46) for the passage of respiratory gases to be sent to the patient, and an additional side outlet (48) to be connected by means of an appropriate tubing to the cuff in, order to adapt the pressure in the cuff to the respiratory pressure. It consists of a body (42A) containing a spring loaded valve (86), having two oscillating discs (86 98) moving at the opposite, sides of a perforated plate (70) perpendicular to the gas flow.
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 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 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.