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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 fl

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.

대표청구항 ▼

A fluid delivery device for delivering fluids to a patient extracorporeal at a controlled rate comprising: (a) a base having a fluid inlet and a fluid outlet interconnected by a fluid flow path; (b) filling means for introducing fluid into said fluid inlet; (c) a deformable membrane which is fitted

A fluid delivery device for delivering fluids to a patient extracorporeal at a controlled rate comprising: (a) a base having a fluid inlet and a fluid outlet interconnected by a fluid flow path; (b) filling means for introducing fluid into said fluid inlet; (c) a deformable membrane which is fitted over said base to define a chamber in communication with said fluid inlet and said fluid outlet, said membrane being movable from a first position to a second position whereby fluid within said chamber will be expelled through said fluid outlet; (d) an expandable member disposed outside said chamber and in contact with said membrane for moving said membrane from said first position to said second position; and (e) a cover superimposed over said base and said expandable member to form an enclosure, said cover including venting means for venting to atmosphere gases contained within said enclosure.