Stent delivery device
CA 2201128 C · Owner: Helgerson, Jeffrey A. · Inventors: Helgerson, Jeffrey A.; Johnson, Wade M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stent delivery device (20) is disclosed that includes an inner tube (30) having a distal portion (32) which carries the stent (10) on the delivery device (20). At least part of the inner tube (30) is formed from a spirally wound wire. A movable outer tube (50) is used to constrain the stent (10) in a radially contracted state on the distal portion (32) of the inner tube (30). A substantially straight elongate wire (34) is configured inside the spirally wound wire and bonded at the distal and proximal portions of the wound wire. The outer tube (50) may have at least one side port (54) adjacent to the distal portion in communication with the annular space between the outer tube …
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 August 24, 1995 and granted October 24, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2017.
- 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.