Collapsible and expandable interbody fusion device
CA 2375689 A1 · Owner: Expanding Concepts, L.L.C. · Inventors: Brett, Darrell C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collapsible, and expandable inter-body fusion cage (10) primarily for use between adjacent vertebrae is designed to be collapsed so as to require the smallest opening necessary for insertion. An upper body (12) is connected to a lower body (14) by articulated supports (16 18). In the collapsed position, the articulated supports (16 18) are folded inward between the upper body (12), and the lower body (14). Once inserted the fusion cage (10) can be , expanded to its fully open position to maintain spacing between adjacent vertebrae. The fusion cage (10) is maintained in its fully open position by an over-center latch (25, 26). Bone material can be inserted in the space formed by the …
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 July 7, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 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.