Movable magnet transmitter for inducing electrical current in an implanted coil
CA 2316967 A1 · Owner: Brown, David J. · Inventors: Huston, Darrin; Wilkerson, Brian D.; Chen, James C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An external power head (20) is energized by a motor (22) causing movement of an element (26) that produces a varying magnetic field thereby inducing power , in an implanted receiver coil (30) within a patient's body. The external power head (20) includes either one or more moving permanent magnets (42) or one or , more moving elements that vary the magnetic flux coupled to the implanted receiver coil (30). As a result of the varying magnetic field experienced by the implanted receiver coil (30), an electric current flows from the implanted receiver coil (30) to energize an implanted medical device (34).
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 February 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2021.
- 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.