Syringe with needle-hangaring mechanism
CA 2104758 A1 · Owner: Ueyama, Ukio · Inventors: Ueyama, Ukio; Koni, Shinichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A syringe comprises besides a barrel, a plunger and a, needle 3 a needle holding stopper, a needle hole stopper a, spring connecting the needle holding stopper and needle hole stopper and a lock mechanism provided between the barrel and the needle holding stopper. The lock mechanism functions such that it fixes the needle holding stopper until completion of injection so that the needle is not pushed up into the hinder part of the barrel, and that it is released when the plunger is further pressed, i.e. by a single finger motion, after completion of the injection so that the, needle holding stopper is pushed up by force of the spring thereby hangaring the needle in the barrel and at 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 August 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2015.
- 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.