Closed-loop drug delivery system
CA 2420746 C · Owner: Konieczynski, David D. · Inventors: Rohr, William L.; Konieczynski, David D.; Dextradeur, Alan J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A delivery system for a drug or bioactive agent includes an implantable pump and a delivery conduit that may be implanted in an organ or other tissue (e.g. the central ox the peripheral nervous system) of a subject. A sensor is also implanted and a controller unit receives the sensor output and directs drug delivery from within the patient pump accordingly. The sensor directly measures a primary biochemical material or state in the tissue or organ system and the monitoring unit effects closed loop feedback control of the pump to achieve a desired end. The end may be the regulation of metabolism or maintenance of a stable metabolic or other state or may be treatment regimen, e.g. by delivery …
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 March 4, 2003 and granted August 2, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 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.