Retractable syringe with a closed barrel
CA 2178937 A1 · Owner: Mazur, Matthew S. · Inventors: Mazur, Matthew S.; Manjarrez, Carlos H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retractable syringe that pulls the needle and holder (202) from a fluid sealed releasable connection in the open forward end of the syringe barrel to a position enclosed within the barrel. A clip (204) may lock the holder to the barrel to prevent release. The piston shaft may then be broken off at the piston (38) and the free end of the shaft inserted through the now open forward end of the syringe barrel enclosing and sealing the needle holder and the remaining fluid in the barrel with the shaft holding the needle from longitudinal movement within the barrel. The syringe can then be disposed of without allowing access to the needle or having fluid leakage.
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 December 13, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2016.
- 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.