Infusion pump system with disposable cartridge having pressure venting and pressure feedback

  • US 8,287,495 B2
  • Filed: 10/10/2011
  • Issued: 10/16/2012
  • Est. Priority Date: 07/30/2009
  • Status: Active Grant
First Claim
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1. A portable infusion pump system, comprising:

  • (a) a pump device configured to accept a disposable fluid cartridge, including;

    (i) a housing,(ii) a drive mechanism with a motor, and(iii) a controller operatively coupled to the drive mechanism; and

    (b) a disposable fluid cartridge which may be operatively coupled to the housing of the pump device, including;

    (i) a collapsible reservoir having an interior volume surrounded by a flexible fluid tight membrane, the interior volume being in fluid communication with a reservoir inlet port,(ii) a substantially rigid shell disposed over the collapsible reservoir, forming a second interior volume between an outside surface of the collapsible reservoir and an inside surface of the substantially rigid shell with a vent inlet port in communication with the second interior volume, and(iii) a delivery mechanism including a bore within a pump body of the delivery mechanism, a spool slidingly disposed in the bore forming a collapsible first volume which is configured to communicate with the reservoir inlet port and dispense port of the bore independent of the reservoir inlet port, and a vent second volume isolated from the collapsible first volume, the vent second volume configured to be moveable between a position that allows the vent inlet port to communicate with a vent outlet port and a position where the vent inlet port and vent outlet port are isolated from each other.

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