A surgical screw system and related methods
CA 2423973 A1 · Owner: Blackstone Medical, Inc. · Inventors: Lombardo, Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surgical screw system (50) for use with implantation rods (8) includes a screw member (1), a receiver member (3) a pressure cap (7) and a locking , device (11). The screw member has a shaft (15) and a head (14) with a spherical undersurface (24) and a conical tapered recess (10). The receiver member has an upper (3a) and lower (3b) portion a u-shaped rod receiving , channel (12) and an axial bore (16). The u-shaped channel has two lateral legs (12a, 12b) at the upper portion and forms an opening leading to the axial bore. The axial bore near the lower portion includes an inwardly conical tapered surface (5) which has a diameter larger than the shaft of the screw member but smaller …
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 September 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 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.