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Infusion pump

  • US 8,353,872 B2
  • Filed: 11/09/2011
  • Issued: 01/15/2013
  • Est. Priority Date: 12/18/2009
  • Status: Expired due to Fees
First Claim
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1. An infusion pump comprising:

  • a first fluid chamber channel;

    an inlet channel and an outlet channel, each formed on opposite sidewalls of the fluid chamber, the inlet channel and the outlet channel each continuously open to fluid flow and each comprising a differently configured channel constriction;

    the fluid chamber having a chamber depth that is shallowest proximate the inlet channel and deepest proximate the outlet channel; and

    a piezoelectric body having a first side attached to an exterior surface of the fluid chamber and a second side attached to an electrode.

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