Compact collapsible infusion apparatus
DCFirst Claim
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1. A compact portable apparatus for dispensing a liquid under pressure at a substantially constant flow rate over a period of time comprising:
- an elongated generally cylindrical support member;
elongated elastic sleeve means mounted and sealingly secured at fixed spaced longitudinal positions on said support member for defining a substantially zero non-pressurized volume pressure reservoir for holding a liquid in a pressurized state for dispensing therefrom;
housing means comprising collapsible non-stretchable housing means for containing said support member and said pressure reservoir for enabling said pressure reservoir to expand naturally and for confining said reservoir to fill concentrically about said support member;
inlet means for introducing a liquid into said elastic pressure reservoir; and
outlet means for dispensing liquid from said pressure reservoir to a selected site.
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Abstract
A liquid infuser apparatus includes an elastic sleeve mounted on an elongated member and within a collapsible spherical housing to enable it to expand naturally to maintain a constant pressure over the infusion period. A rigid open ended housing into which an infuser may be removeably placed provides a reusable protective housing. Multiple infusers are packaged with a rigid housing in a kit.
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Citations
28 Claims
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1. A compact portable apparatus for dispensing a liquid under pressure at a substantially constant flow rate over a period of time comprising:
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an elongated generally cylindrical support member; elongated elastic sleeve means mounted and sealingly secured at fixed spaced longitudinal positions on said support member for defining a substantially zero non-pressurized volume pressure reservoir for holding a liquid in a pressurized state for dispensing therefrom; housing means comprising collapsible non-stretchable housing means for containing said support member and said pressure reservoir for enabling said pressure reservoir to expand naturally and for confining said reservoir to fill concentrically about said support member; inlet means for introducing a liquid into said elastic pressure reservoir; and outlet means for dispensing liquid from said pressure reservoir to a selected site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A compact collapsible infusion apparatus for dispensing a liquid under pressure at a predetermined substantially constant flow rate over a period of time comprising:
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an elongated generally cylindrical support member having inlet means including an inlet port in one end of said member, and outlet means including an outlet port in the other end of said member; elongated elastic sleeve means mounted in non-stretched surface contact and sealingly secured at fixed spaced longitudinal positions on said support member for defining a substantially zero non-pressurized volume pressure reservoir for holding a liquid in a pressurized state for dispensing therefrom; first housing means including a collapsible shell enclosing said support member and said pressure reservoir, said housing having a size and shape for enabling said pressure reservoir to expand naturally and for confining said reservoir to fill concentrically about said support member; inlet means in one end of said support member for introducing a liquid into said elastic pressure reservoir; and outlet means in the other end of said support member for dispensing liquid from said pressure reservoir to a selected site. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A medical infusion kit having multiple apparatus for dispensing multiple dosages of a liquid under pressure at a substantially constant flow rate over a period of time comprising:
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a plurality of substantially identical collapsible infusion devices, each having a collapsible housing having a chamber for containing a pressure reservoir, an elongated generally cylindrical support member disposed in and extending through said chamber, an expansible elastic pressure reservoir mounted on said support member in said chamber for holding said liquid under pressure during dispensing thereof, said elastic pressure reservoir comprises an elastic sleeve snugly mounted over said support member in said chamber for defining a pressure reservoir for holding a liquid in a pressurized state for dispensing therefrom, inlet means in one end of said support member for introducing a liquid into said elastic sleeve; a substantially rigid housing having an open end for removeably receiving said infusion devices coaxially therein in a filled condition; and outlet means in the other end of said support member for conveying a liquid from said pressure reservoir to a selected site. - View Dependent Claims (24, 25, 26)
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27. A compact portable dispensing apparatus for dispensing a liquid under pressure at a substantially constant flow rate over a period of time comprising:
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an elongated substantially cylindrical support member; elongated elastic sleeve means mounted on and sealingly secured at fixed spaced longitudinal positions on said support member for defining a pressure reservoir for holding a liquid in a pressurized state for dispensing therefrom; housing means comprising a substantially spherical rigid housing formed of like half-shells hinged together for removeably containing said support member and said pressure reservoir for enabling said pressure reservoir to expand naturally and for confining said reservoir to fill concentrically about said support member; inlet means for introducing a liquid into said elastic pressure reservoir; and outlet means for dispensing liquid from said pressure reservoir to a selected site. - View Dependent Claims (28)
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Specification