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Pressure vented fluid reservoir for a fluid infusion device

  • US 8,900,206 B2
  • Filed: 02/17/2012
  • Issued: 12/02/2014
  • Est. Priority Date: 02/22/2011
  • Status: Active Grant
First Claim
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1. A fluid infusion device that delivers a medication fluid to a body, the fluid infusion device comprising:

  • a base plate;

    a hollow fluid delivery needle coupled to the base plate to provide a fluid flow path for the medication fluid;

    a sealing element coupled to the base plate and overlying at least a portion of the hollow fluid delivery needle, the sealing element comprising;

    a base section;

    a tip section extending from the base section; and

    a retractable body section between the base section and the tip section; and

    a fluid reservoir comprising;

    a main body section that defines a fluid chamber for the medication fluid;

    a fluid delivery port coupled to and extending from the main body section, the fluid delivery port comprising a fluid conduit and a pressure vent defined therein;

    a funnel element associated with the fluid delivery port, wherein the pressure vent is formed in the funnel element; and

    a septum located in the fluid delivery port and having a nominal non-pierced state forming a fluid seal within the fluid conduit;

    wherein the pressure vent provides a venting conduit from inside the fluid chamber to outside the fluid chamber; and

    wherein the pressure vent terminates at an exterior surface of the fluid delivery port, the exterior surface contoured to mate with a resilient sealing element of the fluid infusion device to seal the pressure vent.

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