Fluid delivery apparatus
First Claim
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1. An apparatus for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
- (a) a base assembly, including a base having a fluid inlet and fluid outlet interconnected by a fluid flow path;
(b) a distendable membrane constructed of an elastic material which is fitted over said base to define a reservoir in communication with said fluid inlet and said fluid outlet, said membrane being distendable by fluid introduced into said reservoir under pressure through said fluid inlet, said membrane having a tendency to return to a substantially nondistended configuration whereby fluid within said reservoir will be expelled through said fluid outlet; and
(c) a fluid container assembly interconnected with said base assembly said container assembly comprising;
(i) a container having a fluid chamber having an inlet and an outlet;
(ii) a plunger telescopically movable within said fluid chamber of said container as a result of fluid pressure being exerted thereon by fluid introduced through said inlet; and
(iii) inlet valve means disposed between said plunger and said inlet for controlling fluid flow into said chamber.
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Accused Products
Abstract
A fluid container assembly which can be aseptically filled in the field with selected fluids and one which is specially designed for sterile coupling and use with fluid dispensing and delivery devices of the character that embody stored energy sources such as compressible cellular masses and distendible elastomeric membranes that form, in conjunction with a cooperating base, fluid chambers for containing the fluid to be dispensed.
86 Citations
17 Claims
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1. An apparatus for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
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(a) a base assembly, including a base having a fluid inlet and fluid outlet interconnected by a fluid flow path; (b) a distendable membrane constructed of an elastic material which is fitted over said base to define a reservoir in communication with said fluid inlet and said fluid outlet, said membrane being distendable by fluid introduced into said reservoir under pressure through said fluid inlet, said membrane having a tendency to return to a substantially nondistended configuration whereby fluid within said reservoir will be expelled through said fluid outlet; and (c) a fluid container assembly interconnected with said base assembly said container assembly comprising; (i) a container having a fluid chamber having an inlet and an outlet; (ii) a plunger telescopically movable within said fluid chamber of said container as a result of fluid pressure being exerted thereon by fluid introduced through said inlet; and (iii) inlet valve means disposed between said plunger and said inlet for controlling fluid flow into said chamber. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
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(a) a base assembly, including a base having a fluid inlet and fluid outlet interconnected by a fluid flow path; (b) a distendable membrane constructed of an elastic material which is fitting over said base to define a reservoir in communication with said fluid inlet and said fluid outlet, said membrane being distendable by fluid introduced into said reservoir under pressure through said fluid inlet, said membrane having a tendency to return to a substantially nondistended configuration whereby fluid within said reservoir will be expelled through said fluid outlet; and (c) a fluid container assembly interconnected with said base assembly said container assembly comprising; (i) a container including a fluid chamber having an inner surface and an inlet and an outlet; (ii) covering means for covering said inner surface; and (iii) a plunger telescopically movable within said fluid chamber of said container as a result of fluid pressure being exerted thereon by fluid introduced through said inlet. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus for use in infusing fluids into an ambulatory patient at a controlled rate comprising:
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(a) a base assembly, including a base having a fluid inlet and fluid outlet interconnected by a fluid flow path; (b) a distendable membrane constructed of an elastic material which is fitted over said base to define a reservoir in communication with said fluid inlet and said fluid outlet, said membrane being distendable by fluid introduced into said reservoir under pressure through said fluid inlet, said membrane having a tendency to return to a substantially nondistended configuration whereby fluid within said reservoir will be expelled through said fluid outlet; and (c) a fluid container assembly interconnected with said base assembly said container assembly comprising; (i) a container including a fluid chamber having an inner surface and an inlet and an outlet; (ii) covering means for covering said inner surface; (iii) a plunger telescopically movable within said fluid chamber of said container as a result of fluid pressure being exerted thereon by fluid introduced through said inlet; and (iv) inlet valve means disposed between said plunger and said inlet for controlling fluid flow into said chamber. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification