Chest compression apparatus
CA 2009573 C · Owner: Hansen, Leland G. · Inventors: Warwick, Warren J.; Hansen, Leland G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Oscillatory chest compression apparatus to aid in loosening and eliminating mucus from the lungs of a cystic fibrosis patient. The apparatus includes a mechanism far applying pressurized air to a bladder covering the chest of a person and a mechanism for venting pressurized air from the bladder. In addition the apparatus includes a mechanism for supplying the air to the bladder in a pattern of pulses having high rise times like square waves. The application of the pressurized pulses and the pulse rate is controllable by the patient.
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 8, 1990 and granted May 30, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 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.