Fluid delivery apparatus having a stored energy source
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 having first, second and third adjacent portions and a fourth marginal portion circumscribing said first, second and third portions, said base having a fluid port;
(b) a distendable elastomeric membrane overlying said first, second and third portions of said base;
(c) cover means receivable over said base for encapsulating said membrane, said cover member having a first chamber defining wall superimposed over said first portion of said base, a second chamber defining wall superimposed over said second portion of said base, a third chamber defining wall superimposed over said third portion of said base, and marginal means for urging said membrane into sealing engagement with fourth portion of said base; and
(d) a fluid passageway interconnecting said first, second and third chambers;
said fluid passageway being in communication with said fluid port of said base;
said membrane being movable from a first position proximate said base to a second distended position proximate said first, second and third chamber defining walls of said cover means upon introduction of fluid under pressure into said fluid port of said base, said membrane in its distended position having a tendency to return to a less distended position.
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Abstract
An apparatus for accurately infusing medicinal agents into an ambulatory patient at specific rates over extended periods of time. The apparatus is of a compact, low profile, laminate construction and includes either an elastic distendable membrane, or a thin barrier member which, in cooperation with a thin planar base defines a fluid chamber having a fluid outlet. The apparatus includes an internal stored energy source which functions to controllably expel the medicinal agents from the apparatus. The stored energy source may comprise either a distendable elastomeric membrane or an expandable sponge like cellular mass.
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Citations
14 Claims
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1. A fluid delivery device for delivering fluids to a patient at a controlled rate comprising:
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(a) a base having first, second and third adjacent portions and a fourth marginal portion circumscribing said first, second and third portions, said base having a fluid port; (b) a distendable elastomeric membrane overlying said first, second and third portions of said base; (c) cover means receivable over said base for encapsulating said membrane, said cover member having a first chamber defining wall superimposed over said first portion of said base, a second chamber defining wall superimposed over said second portion of said base, a third chamber defining wall superimposed over said third portion of said base, and marginal means for urging said membrane into sealing engagement with fourth portion of said base; and (d) a fluid passageway interconnecting said first, second and third chambers;
said fluid passageway being in communication with said fluid port of said base;
said membrane being movable from a first position proximate said base to a second distended position proximate said first, second and third chamber defining walls of said cover means upon introduction of fluid under pressure into said fluid port of said base, said membrane in its distended position having a tendency to return to a less distended position. - View Dependent Claims (2)
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3. A fluid delivery device for delivering fluids to a patient at a controlled rate comprising:
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(a) a base having first and second adjacent portions and a marginal portion circumscribing said first and second portions, said base having a fluid port in communication with a fluid passageway; (b) a distendable elastomeric membrane overlying said first and second portions of said base; (c) cover means receivable over said base for encapsulating said membrane, said cover member having a first chamber defining wall superimposed over said first portion of said base, a second chamber defining wall superimposed over said second portion of said base, and marginal means for urging said membrane into sealing engagement with said marginal portion of said base; and (d) first fluid introducing means attached to said base for introducing fluid between said distendable membrane and said first and second portions of said base, said fluid introducing means comprising; (i) connector means for interconnection of container means for containing a liquid component; and (ii) container means for containing a liquid component, said container means being connectable with said connector means. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A fluid delivery device for delivering fluids to a patient at a controlled rate comprising:
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(a) a base having first, second and third portions and a marginal portion circumscribing said first, second and third portions, said base having a fluid port in communication with a fluid passageway; (b) a distendable elastomeric membrane overlying said first, second and third portions of said base; (c) cover means receivable over said base for encapsulating said membrane, said cover member having a first chamber defining wall superimposed over said first portion of said base, a second chamber defining wall superimposed over said second portion of said base, a third chamber defining wall superimposed over said third portion of said base; and (d) first fluid introducing means attach to said base for introducing fluid between said distendable membrane and said first, second and third portions of said base, said fluid introducing means comprising; (i) connector means for interconnection of container means for containing a fluid; and (ii) container means for containing a fluid, said container means being connectable with said connector means. - View Dependent Claims (11, 12, 13, 14)
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Specification