Method and apparatus for the fixation of bone fractures, limb lengthening and the correction of deformities
CA 2050754 C · Owner: Jamison, Russell D. · Inventors: Treharne, Richard; Wigginton, Robert; Sherman, Michael C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for the fixation of bone fractures limb lengthening, and the correction of deformities comprises an improved composite plastic carbon fibre ring that is formed in a mould, or machined with a stepped end portion that allows half rings to be assembled in a common plane. In the manufacture of the apparatus a mould may be used wherein multiple rings can be formed by stacking the rings with eg. a, polytetrafluoroethylene layer therebetween and Wherein circumferential braid reinforcement of carbon fibre adds strength at the circumferential inner and outer curved surfaces of the rings and half rings.
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 September 5, 1991 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2013.
- 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.