Osmotic delivery device having a two-way valve and dynamically self-adjusting flow channel
CA 2466816 A1 · Owner: Intarcia Therapeutics, Inc. · Inventors: Gilbert, Scott Jay
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An implantable, osmotically-driven delivery system having a dynamic two-way , valve (10) and self-adjusting variable geometry fluid (1) flow channel. As pressure within the agent delivery system goes up the fluid channel narrows, thereby restricting flow. At exceptionally high pressures the valve can be , designed to close altogether at the orifice or delivery end or it can provide , a minimal leak path so that a maximum fluid flow is never exceeded. At zero or very low pressures, the valve will close completely at the beneficial agent reservoir end, isolating the beneficial agent formulation from external fluid infiltration and thereby eliminating diffusion of external fluid into the …
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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 November 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2024.
- 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.