Collapsible aspiration catheter
CA 2272334 C · Owner: Palestrant, Aubrey M. · Inventors: Palestrant, Aubrey M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A partially collapsible catheter (10) is formed as a substantially-flattened tube (12) of flexible, collapsible plastic; a spacing member (32) disposed within such tube allows the tube to substantially flatten and collapse in the absence of infusion fluid, but maintains at least one channel open within the tube for allowing fluid to be aspirated therethrough. During infusion infusion, fluid expands the catheter to a generally rounded configuration. The spacing member can be incorporated within a single lumen catheter alternatively, the, spacing member can divide the tube into first and second lumens (88 90) for, providing a dual lumen catheter (60).
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 26, 1997 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2019.
- 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.