Locking screw
CA 2520644 A1 · Owner: Synthes Usa, Llc · Inventors: Buettler, Markus; Senn, Peter; Schlienger, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The locking screw (1) comprises a screw head (2) a screw shank (3) having a , diameter (d) and a central line (4) that is defined as a connecting line of the centers of gravity of the axially successive orthogonal cross-sectional areas of the locking screw (1). The locking screw also comprises an exit point (5) on the screw head (2) and an exit point (6) on the free end of the screw shank (3), however, the central line (4) is not a continuous straight line. The inventive locking screw enables the elimination of play between the crossboring of the intramedullary nail and of the locking screw.
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 March 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2025.
- 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.