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Ophthalmic Injection Device Using Piezoelectric Array

  • US 20070270748A1
  • Filed: 05/22/2007
  • Published: 11/22/2007
  • Est. Priority Date: 05/17/2006
  • Status: Active Grant
First Claim
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1. An injection system comprising:

  • a tip segment attachable to and removable from a limited reuse assembly;

    the tip segment comprising;

    a dispensing chamber housing having an inner surface and an outer surface, the inner surface defining a dispensing chamber for receiving a quantity of a substance;

    a storage chamber located near the dispensing chamber housing;

    a piezoelectric array located between the storage chamber and the dispensing chamber housing;

    a needle fluidly coupled to the dispensing chamber; and

    a first housing at least partially enclosing the dispensing chamber housing, the storage chamber, and the piezoelectric array;

    the limited reuse assembly comprising;

    a power source for providing power to the piezoelectric array;

    a controller for controlling the power source; and

    a second housing at least partially enclosing the power source and the controller;

    wherein the piezoelectric array is activated to pump the substance from the storage chamber to the dispensing chamber.

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