Self-retracting syringe needle
CA 2293457 A1 · Owner: Blue Star Corporation · Inventors: Bonnet, Jean Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a self-retracting syringe needle comprising a body (1) supporting an injection needle a plunger (4), a sheath (5) enclosing the body (1) a spring (6) arranged between the sheath (5) and the body (1) flexible pins (7) co-operating as limit stop with the body (1) to define a first position blocking the body (1) relative to the sheath (5) in a first direction. The syringe comprises a circlip (9) mounted around the body (1) in a position compressed between the sheath (5) and the body (1) in the first blocking position and in a released position in the second blocking position the circlip (9) having at least one part (9a) with external contour of greater dimension than the …
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 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 2020.
- 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.