Method and device for subretinal drug delivery
CA 2451663 C · Owner: Varner, Signe Erickson · Inventors: Shelley, Terry Harrison; Dejuan, Eugene Jr.; Varner, Signe Erickson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Devices and devices for the treatment of the eye are disclosed. Preferred devices of the invention include a piercing member (12) that is inserted into the eye to create a pathway for a cannula(44). The cannula (44) is slidably mounted to the piercing member (12) and is adapted to reach a treatment site within the eye at which material is injected into and/or withdrawn from the eye. The outer diameter of the piercing member (12) is small enough to allow for self-sealing of the insertion site of the device upon the device's withdrawal therefrom. Also disclosed are methods for the utilizing the devices to treat the eye.
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 June 21, 2002 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2024.
- 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.