A self centering vena cava filter
CA 2563228 C · Owner: Hemmingsen, Allan · Inventors: Molgaard-Nielsen, Arne; Hendriksen, Per; Osborne, Thomas A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A removable filter (10) having a collapsed state and an expanded state for capturing thrombi in a blood vessel, the filter comprising: a plurality of primary struts (12), each primary strut in the expanded state extending from a primary strut first end to an anchoring hook (26) each primary strut , extending arcuately along a longitudinal axis and linearly radially the , plurality of primary strut first ends being attached together along the longitudinal axis; and a plurality of secondary struts (30) each secondary , strut in the expanded state extending from a secondary strut first end to a free end, each secondary strut extending arcuately along the longitudinal axis and linearly …
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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 April 18, 2005 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.