Compression drill guide
CA 2043967 C · Owner: Synthes Usa, Llc · Inventors: Gisin, Paul; Perren, Stephan M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drill guide for drilling screw holes in bone fragments that are to be stabilized by means of a device composed of a compression plate and round-headed screws the drill guide having, a hollow outer cylinder and hollow inner cylinder positioned so, that the hollow inner cylinder can be slid axially within the outer cylinder by means of a spring mechanism the plate-side end, of the outer cylinder and the plateside of the inner cylinder having the shape of the spherical underside of the head and the shank of the screws to be used, respectively.
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 June 5, 1991 and granted March 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 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.