Thorax drainage apparatus
CA 1270169 C · Owner: Malette, William Grallam · Inventors: Malette, William Grallam
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collection chamber for fluids and a wide diameter pathway for the removal of air due to leaks from the lung after operation or injury to the contents of the thorax is described. The collection chamber is provided with ports for the attachment of tubing extending from the chest cavity and for connection to a vacuum pump. A water level control vacuum regulator is integral with the chamber which allows a parallel pathway for the removal of large volumes of air from the pleural space without the necessity of a high vacuum. A one-way valve is provided which is open during the drainage mode but which closes during the respiratory inhilation mode to prevent the back flow of air or fluid into the …
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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
- Granted June 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 2007.
- 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.