Spiral stent
CA 2127458 C · Owner: Timmermans, Hans A. · Inventors: Maeda, Munehiro; Timmermans, Hans A.; Rosch, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A self-expanding endovascular stent formed of stainless steel wire which is bent into an elongated zigzag pattern (5) and helically wound about a central axis (31) to define a tubular shape (30). Adjacent bends (8) in the helix are interconnected with a filament (32). The stent (30) is capable of being radially compressed such that the straight wire sections (11 13 and 15), and the, bends (8) are tightly packed around a central axis (31). The stent (30) resiliently self-expands to assume a tubular shape when released from the compressed state.
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 January 14, 1993 and granted December 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2015.
- 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.