Articulated bone screw
CA 2560898 C · Owner: Niederberger, Alfred · Inventors: Van Der Werken, Christian; Niederberger, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The claimed bone screw (1) has a head (2) a shaft (3) and a longitudinal axis , (9). The shaft (3) comprises a proximal section (5) adjacent to the head (2) and a distal section (7) secured to the proximal section (5) by a cardan or cardan-like joint (6), the distal section being suitable for introduction into the bone and being provided with an outer thread (4). The bone screw (1) can be bent in all directions relative to its longitudinal axis while retaining , its axial rigidity and fully transmitting a couple without the need for additional means.
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 March 26, 2004 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2026.
- 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.