Locking mechanism for linking anchoring elements in spinal osteosynthesis
CA 2068675 C · Owner: Lapresle, Philippe · Inventors: Lapresle, Philippe; Missenard, Gilles; Vignaud, Jean-Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a locking mechanism for linking two anchoring elements (3) in spinal osteosynthesis the said anchoring elements (3) consisting of a bone fixation part (4) made up of a screw a curved blade or similar and a fixation body for an attachment pin made up of a tuning-fork head (5) receiving the said pin and a blocking screw (6) characterized by the fact that it is made up of two ring elements (9) each capable of being threaded onto the outside of one of the tuning-fork heads (5) each ring element (9) having an external blocking rod (10) able to slide into a clamp (11) the two clamps (11) of the device being tightened by a common screw (12) crossing the said clamps. - …
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 May 14, 1992 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2014.
- 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.