Apparatus and method for aligning vertebrae
CA 2325210 A1 · Owner: Roggenbuck, Carl · Inventors: Roggenbuck, Carl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for aligning misaligned vertebrae including a partible screw which can, be threadedly coupled to misaligned vertebrae and decoupled from the vertebrae after, being aligned. The screw, which is rotatable about an axis includes axially , shiftable, screw halves having complementally formed partial screw thread sections which can, be aligned in any one of a plurality of axially spaced apart positions to define a helical, screw thread. Apparatus is provided for detachably holding the screw halves together, in any one of a plurality of axially spaced apart positions with the partial screw threads, on each of the halves in alignment including an alignment collar and a locking …
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 November 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2022.
- 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.