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Fluid delivery apparatus having a stored energy source

  • US 5,468,226 A
  • Filed: 02/03/1994
  • Issued: 11/21/1995
  • Est. Priority Date: 06/16/1989
  • Status: Expired due to Fees
First Claim
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1. A fluid delivery device for delivering fluids to a patient at a controlled rate comprising:

  • (a) a base substantially plate like having a width and first and second portions, said first portion having a fluid inlet;

    (b) a distendable member overlying and connected to said base;

    (c) cover means receivable over said base for sealably enclosing said distendable member, said cover member having a first interior wall portion defining in cooperation with said base a first chamber superimposed over said first portion of said base, and a second interior wall portion defining a second chamber superimposed over said second portion of said base;

    said cover means further having a fluid inlet passageway in communication with said second portion of said base;

    (d) fluid flow means for interconnecting said first and second portions of said base; and

    (e) said distendable member being movable from a first position proximate said base to a second distended position wherein said member is located proximate said interior wall portions of said cover means upon introduction of fluid under pressure into said fluid inlet of said base, said distendable member in its distended position having a tendency to return toward a less distended position and forming in cooperation with said base a chamber having a height substantially less than said width of said base.

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