INFUSION PUMP SYSTEM WITH DISPOSABLE CARTRIDGE HAVING PRESSURE VENTING AND PRESSURE FEEDBACK

  • US 20110144616A1
  • Filed: 07/29/2010
  • Published: 06/16/2011
  • Est. Priority Date: 07/30/2009
  • Status: Active Grant
First Claim
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1. An infusion pump system, comprising:

  • a pump device including a housing, a drive mechanism with a motor, a controller operatively coupled to the drive mechanism and a slot configured to accept a disposable fluid cartridge;

    a disposable fluid cartridge which may be operatively coupled to the housing, the cartridge including a delivery mechanism, 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, the cartridge also including a substantially rigid shell disposed over the reservoir and forming a second interior volume between an outside surface of the reservoir and an inside surface of the rigid shell with a vent inlet port in communication with the second interior volume;

    a pressure sensor disposed between an interior surface of the rigid case and an exterior surface of the collapsible reservoir shell;

    a bore within a pump body of the delivery mechanism; and

    a spool slidingly disposed in the bore having a collapsible first volume which is configured to communicate with the reservoir inlet port and dispense port of the bore independently of each other, and a vent second volume isolated from the first collapsible volume, the vent second volume configured to be moveable between a position that allows a vent inlet port to communicate with a vent outlet port and a position where the vent inlet and outlet ports are isolated from each other.

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