Cannula for use with a medical syringe
CA 2411347 A1 · Owner: Sheehan, Neil · Inventors: Sheehan, Neil; Sharp, Fraser R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blunt needle plastic cannula for a syringe has a central axial passage terminating in a tip opening axially through one end thereof. Different axial sections along the cannula have respective differential resistances to movement relative to a membrane upon insertion of the cannula into the membrane. The opposite end of the cannula may have a Luer fit or Luer lock or may have integrally formed therewith an adapter for releasably connecting the adapter and cannula to the distal end of the barrel of the syringe.A syringe plunger and the adapter have connective structure whereby the adapter and cannual can be withdrawn into the interior of the barrel. The opposite ends of the barrel …
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 8, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2023.
- 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.