Metering device for implantable delivery system
CA 2113835 C · Owner: Programmable Pump Technologies, Inc. · Inventors: Makower, Joshua; Idriss, Samir F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid metering element (1) useful in an implantable delivery system (1') is coupled between a pressurized fluid source (100') and an outlet conduit (106) to provide discrete flow pulses at a predetermined rate. The metering element (1) consists of a first movable member (3) constrained within a housing (2) and a second movable member (4) retained in a recess (12) by the first. Alternate positioning of the first member simultaneously fills and empties a cavity (16) in which the second resides discharging, fluid through the conduit. The first movable member can be a planar slider (3) an axially translatable cylinder (131) or a rotatable cylinder (144). The second movable member may be a …
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 August 10, 1992 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2014.
- 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.