Combined photocoagulation and photodynamic therapy
CA 2499469 C · Owner: Novadaq Technologies Inc. · Inventors: Flower, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described is a method for treating lesions. A composition comprising a radiation , absorbing dye and a photodynamic agent is used to effect photocoagulation of a blood , vessel carrying blood to a lesion in an animal in response to an application of energy, thus reducing a rate of blood flow through said blood vessel and reducing a , rate at which , said composition exits said lesion followed by photodynamic therapy of said lesion by , applying energy to excite said photodynamic agent. Also disclosed is a method for , identifying lesions, by injecting said composition into a blood vessel applying energy to , cause a fluorescing dye to fluoresce and obtaining an angiographic image.
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 July 16, 2003 and granted June 4, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2025.
- 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.