Fluid delivery apparatus
First Claim
Patent Images
1. A device for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
- (a) a base having a fluid inlet and fluid outlet interconnected by a fluid flow path;
(b) filling means for introducing fluid into said fluid inlet;
(c) a distendable membrane constructed of an elastic material which is fitted over said base to define a chamber in communication with said fluid inlet and said fluid outlet, said membrane being distendable by fluid introduced into said chamber under pressure through said fluid inlet, said membrane having a tendency to return to a substantially nondistended configuration whereby fluid within said chamber will be expelled through said fluid outlet; and
(d) adding means disposed within said fluid flow path for adding an additive to fluid flowing therethrough.
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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 an elastic distendable membrane, which, in cooperation with a thin planar base, defines a fluid chamber having a fluid outlet. Disposed within the fluid chamber is a thin fluid permeable member which precisely controls the rate of fluid flow through the fluid outlet.
184 Citations
43 Claims
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1. A device for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
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(a) a base having a fluid inlet and fluid outlet interconnected by a fluid flow path; (b) filling means for introducing fluid into said fluid inlet; (c) a distendable membrane constructed of an elastic material which is fitted over said base to define a chamber in communication with said fluid inlet and said fluid outlet, said membrane being distendable by fluid introduced into said chamber under pressure through said fluid inlet, said membrane having a tendency to return to a substantially nondistended configuration whereby fluid within said chamber will be expelled through said fluid outlet; and (d) adding means disposed within said fluid flow path for adding an additive to fluid flowing therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
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(a) a base having a fluid inlet, a fluid outlet and a fluid passageway interconnecting said fluid inlet and said fluid outlet; (b) filling means for introducing fluid into said fluid inlet; (c) a distendable membrane constructed of an elastic material which is fitted over said base to define a chamber in communication with said fluid passageway, and with said membrane being distendable by fluid introduced into said chamber under pressure through said fluid inlet and having a tendency to return to a substantially nondistended configuration whereby fluid within said chamber will be expelled through said fluid outlet; (d) adding means disposed within said fluid passageway for adding an additive to fluid flowing therethrough, said adding means comprising a support and an additive removably connected to said support; and (e) infusion means communicating with said fluid passageway for infusing fluid into the patient. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A device for use in infusing beneficial agents into a patient at a controlled rate comprising:
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(a) a base having a fluid inlet, a fluid outlet and a fluid passageway interconnecting said fluid inlet and said fluid outlet; (b) filling means for introducing fluid into said fluid inlet; (c) a distendable membrane constructed of an elastic material which is fitted over said base to define a chamber in communication with said fluid passageway, said membrane being distendable by fluid introduce into said chamber under pressure through said fluid passageway and having a tendency to return to a substantially nondistended configuration whereby fluid within said chamber will be expelled through said fluid outlet; (d) adding means mounted within said base for adding an additive to fluid introduced by said filling means, said adding means comprising; (i) additive presentation means disposed within said fluid passageway for presenting an additive to the fluid flowing therethrough; and (ii) an additive removably interconnected to said additive presentation means, said additive comprising a beneficial agent. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. A device for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
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(a) a base having a fluid inlet and fluid outlet interconnected by a fluid flow path; (b) filling means for introducing fluid into said fluid inlet; (c) a distendable membrane constructed of an elastic material which is fitted over said base to define a chamber in communication with said fluid inlet and said fluid outlet, said membrane being distendable by fluid introduced into said chamber under pressure through said fluid inlet, said membrane having a tendency to return to a substantially nondistended configuration whereby fluid within said chamber will be expelled through said fluid outlet; and (d) adding means disposed within said fluid flow path for adding an additive to fluid flowing therethrough, said adding means comprising an additive and an additive presentation means for presenting said additive to the fluid, said additive presentation means being disposed within said fluid flow path so that at least a part of said additive will be added to said fluid introduced into said fluid inlet. - View Dependent Claims (41, 42, 43)
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Specification