Patient-controlled drug administration device
CA 2334588 A1 · Owner: I-Flow Corporation · Inventors: Mcphee, Charlie J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A PCA device includes a fluid conduit having an upstream portion and a downstream portion, a first flow-restricting orifice in the upstream portion, a second flow-restricting orifice in the downstream portion a , pressure-responsive check valve in the downstream portion in parallel with the second flow-restricting orifice, and a bolus dose delivery mechanism including a chamber in fluid communication between the upstream portion and the downstream , portion. Continuous flow is provided through the first flow-restricting orifice, the chamber, and the second flow-restrictive orifice the continuous , flow, serving to fill the chamber at a controlled rate through the first flowrestrictive, …
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, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2021.
- 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.