Retractable syringe
CA 2107631 C · Owner: Retrax, Inc. · Inventors: Zdeb, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retractable syringe includes a barrel one end of, which comprises a mounting collar. A needle carrier is releasably mounted within the collar, and releasably supports a needle cartridge. A hypodermic needle is mounted within the cartridge. A sheath attaches at one end to the cartridge and at the other, end to the collar. A plunger is telescoped into the barrel and, includes a relatively hard piston sealingly engaging the barrel. The piston includes a latch for engaging the carrier and releasing it from the collar. A pocket in the carrier has a support member in its center, and a pair of helical ribs for threadingly engaging a pair of tabs on the cartridge. The cartridge sealingly receives …
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 October 4, 1991 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2013.
- 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.