Intervertebral disc prothesis
CA 2564987 C · Owner: Ldr Medical · Inventors: Zeegers, Willem
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an intervertebral disc prosthesis preferably comprising at least three pieces including an upper plate (1) a lower plate , (2) and a mobile core (3) at least in relation to the lower plate (2) co-, operation means (23, 33) allowing to limit or eliminate the movements of the core (3) in relation to the lower plate (2) in translation and in rotation, respectively about an axis substantially parallel to the lower plate (2) and about an axis substantially perpendicular to the lower plate (2) at least one , part of the surface of at least one plate being curved and complementary with a curved surface (30) of the core (3), with which it is in contact wherein , …
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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 28, 2005 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 28, 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.