Safety syringe
CA 2253458 A1 · Owner: Nordway Limited · Inventors: Wadman, Alexis Adrian Filipe; Van Der Meyden, Hendrikus Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety syringe has a barrel (1), a piston with a piston body (2) and a piston head (3), and a protective sheath (4) which carries piston engaging formations. A fluid pathway extends through the head (3) and body (2) and the body (2) is locatable to extend within the sheath (4) and be engaged by the piston engaging formations, with the head (3) outside the sheath (4) and connected to and in fluid communication with the body (2). The barrel (1) is slidable over the head (3) and sheath (4) in a discharge position to release the piston engaging formations and grip the released piston the barrel (1) , being slidable from the discharge position to withdraw the released piston …
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 May 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 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.