Biological duct liner and installation catheter
CA 2030196 C · Owner: Stiles, Frank B. · Inventors: Stiles, Frank B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for correcting narrowing of a fluid vessel of the body comprising a catheter for, insertion into the blood vessel at a location remote from a region of narrowing, and a fluid vessel liner. The liner is comprised of a radially resiliently compressible tube having an elongated split along one side thereof. The edges of the sides of the liner on each side of the split overlap each other. The liner is contained within the catheter adjacent a tip of the catheter in a compressed condition. The catheter is constructed for expulsion of the liner from the catheter forward of the catheter at the region of narrowing, thereby facilitating expansion of the tube to a natural expanded …
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 November 16, 1990 and granted July 22, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2012.
- 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.