Adjustable intervertebral implant
CA 2299323 C · Owner: Knothe, Inga · Inventors: Knothe, Inga; Aebi, Max; Benoit, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intervertebral implant in the form of a support unit with a central yoke and four, legs extending in a direction is described. The legs are configured in two substantially, mutually parallel planes spaced apart by the yoke and are abuttable as support surfaces, against adjacent vertebrae. A guide cylinder extending from the yoke in the same direction, as the legs has at least on threaded surface. A dilator member is adapted to be fixed to the, guide cylinder and to deformably spread the legs of the intervertebral implant a, predetermined amount. The gaps between the legs which the dilator member spreads may, have grooves to arrest the dilator member in a predetermined location.
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 August 6, 1997 and granted December 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2019.
- 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.