Surgical cassette
CA 2087788 C · Owner: Berkman, John W. · Inventors: Etherington, Roger; Walbrink, Harold J.; Beuchat, Charles E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cassette (500) for use in combination with a surgical handpiece (10) and a control console (501) for controlling irrigation and/or aspiration fluid flows in the handpiece (10) having a housing (502) with an external surface and an interface (504) adapted to be held in operative association with the control console (501) an inlet coupling, (506), a pump tube (518) having an inlet (512) and a discharge line (522) in fluid communication with a waste container (118) and a fluid flow passage (514) in fluid communication with the inlet coupling (506) and the pump inlet (512) consisting of an open channel formed in the external surface and a gasket (136) adhered to the external surface to seal …
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 January 21, 1993 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2015.
- 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.