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Fluid delivery device with electrically activated energy source

  • US 6,537,250 B1
  • Filed: 08/24/2000
  • Issued: 03/25/2003
  • Est. Priority Date: 08/27/1997
  • Status: Expired due to Fees
First Claim
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1. A device for infusing medicinal fluid into a patient at a controlled rate comprising:

  • (a) a housing having an outlet;

    (b) a fluid reservoir containing a fluid disposed within said housing, said fluid reservoir having an inlet and an outlet in communication with said outlet of said housing;

    (c) an expandable mass disposed within said housing proximate said reservoir, said expandable mass comprising a semi-solid, which will respond to a change in electric field in a manner to act upon said fluid within said reservoir to cause said fluid to flow outwardly of said outlet of said reservoir; and

    (d) control means operably associated with said expandable mass for changing the electric field acting upon said expandable mass.

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  • 6 Assignments
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