Improved automatic internal compression-distraction method and apparatus
CA 2110814 A1 · Owner: Holloway, Jordon M. · Inventors: Wakefield, Thomas L.; Pursley, John A.; Holloway, Jordon M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An orthopaedic system is provided which includes a plurality of support members (60), a plurality of rods (20) interconnecting the support members (60), a plurality of pins (70) attached to the support members (60) for passing through bone of a patient and an automatic drive mechanism to control an adjustment mechanism of the rods (20) to adjust the rod length of rods (20) to alter the relative positions of the support members (60). The drive mechanism includes at least one motor (11) for incrementally adjusting the adjustment mechanism of at least one of the rods (20) and a controller mechanism (30) for providing pulses to the motor (11) and for storing information regarding the number of …
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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 June 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 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.