Deswelled, hydrogel intraocular lenses
CA 1323958 C · Owner: Barrett, Graham D. · Inventors: Barrett, Graham D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for reducing the size of hydrogel intraocular lenses by means of deswelling in hyperosmotic solutions (e.g. saturated sodium chloride solution) and a corresponding packaging arrangement are described. The deswelled hydrogel, lenses can be inserted through a much smaller surgical incision than fully hydrated lenses, yet retain all of the inherent advantages of hydrogel intraocular lenses (e.g. autoclavability). The lenses are rehydrated by the aqueous humor following implantation.
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
- Granted November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.