Stretch resistant vaso-occlusive coils
CA 2180370 C · Owner: Gia, Son M. · Inventors: Ken, Christopher G. M.; Engelson, Erik T.; Gia, Son M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This is an implantable vaso-occlusive device. It is typically a vasoocclusive coil comprised of a primary helically wound coil which may then be wound into a secondary shape. Central to the invention is the use of a stretchresisting member fixedly attached within at least a portion of the primary coil.The stretch-resisting member may be formed into coil tips at the ends of the coil by melting the polymeric fibers or alloys or by attaching the fibers with a glue. This stretch-resisting member is for the primary purpose of preventing stretching of the coil during movement of that coil e.g. by retrieval or repositioning after deployment. The device typically has a self-forming secondary shape …
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 2, 1996 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2018.
- 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.