Disposable safety syringe
CA 2280716 A1 · Owner: Restelli, Sergio · Inventors: Righi, Nardino; Restelli, Sergio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The syringe is provided with a needle-covering sleeve (14) which is slidably , fitted on the syringe barrel (1) and is held in its retracted rest position by means of retaining tongues (10), which hook its rear rim (13). At the end of the injection stroke of the plunger (2) a rear head (8) of the stem (3) of , the plunger (2) radially opens the retaining tongues (10) apart which release , thereby the needle-covering sleeve (14). Then the latter is axially advanced , by a spring (16) until it entirely covers the needle (5). The needle-carrier (4, 104) has at least one lateral locking projection (28) slidably engaging , in a longitudinal slot (18) which is formed in the needle-covering …
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 February 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 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.