Fluid delivery apparatus with flow indicator and vial fill
First Claim
1. A device for use in infusing medicinal fluid into a patient at a controlled rate comprising:
- (a) a base having a receiving chamber formed therein;
(b) a hollow cannula mounted within said receiving chamber of said base;
(c) stored energy means for forming, in conjunction with said base a fluid reservoir having an inlet in communication with said hollow cannula and an outlet, said stored energy means comprising at least one distendable member superimposed over said base, said member being distendable as a result of pressure imparted by the fluids to be infused, to establish internal stresses, said stresses tending to move said member toward a less distended configuration;
(d) fill means receivable within said receiving chamber of said base for filling said fluid reservoir;
(e) an outlet port in communication with said outlet of said fluid reservoir for dispensing fluids from the device; and
(f) fluid actuated indicator means disposed intermediate said fluid outlet of said reservoir and said outlet port for visually indicating fluid flow from said fluid reservoir.
5 Assignments
0 Petitions
Accused Products
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, 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. The apparatus also includes a highly novel fluid flow indicator that provides a readily discernible visible indication of fluid flow through the apparatus. Additionally, the apparatus includes a fill assembly comprising a prefilled vial that can be used to fill the fluid reservoir of the device with a selected medicinal fluid.
77 Citations
21 Claims
-
1. A device for use in infusing medicinal fluid into a patient at a controlled rate comprising:
-
(a) a base having a receiving chamber formed therein; (b) a hollow cannula mounted within said receiving chamber of said base; (c) stored energy means for forming, in conjunction with said base a fluid reservoir having an inlet in communication with said hollow cannula and an outlet, said stored energy means comprising at least one distendable member superimposed over said base, said member being distendable as a result of pressure imparted by the fluids to be infused, to establish internal stresses, said stresses tending to move said member toward a less distended configuration; (d) fill means receivable within said receiving chamber of said base for filling said fluid reservoir; (e) an outlet port in communication with said outlet of said fluid reservoir for dispensing fluids from the device; and (f) fluid actuated indicator means disposed intermediate said fluid outlet of said reservoir and said outlet port for visually indicating fluid flow from said fluid reservoir. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A device for use in infusing medical fluids comprising:
-
(a) a base assembly including; (i) an ullage substrate having a receiving chamber formed therein; and (ii) a hollow cannula mounted within said receiving chamber; (b) stored energy means for forming in conjunction with said base assembly a fluid reservoir having an inlet in communication with said hollow cannula and an outlet, said stored energy means comprising at least one distendable member superimposed over said base, said member being distendable as a result of pressure imparted by the fluids to be infused, to establish internal stresses, said stresses tending to move said member toward a less distended configuration; (c) fill means receivable within said receiving chamber of said base for filling said fluid reservoir, said fill means comprising a fill assembly including a container subassembly and an adapter subassembly, said container subassembly comprising; (i) a container having a fluid chamber with first and second open ends; (ii) pierceable means for sealably closing said first open end of said container, said pierceable means being pierceable by said hollow cannula; and (iii) a plunger telescopically movable within said container from a first location proximate said second open end to a second, spaced-apart location; (d) an outlet port in communication with said outlet of said reservoir for dispensing fluids from the device; (e) fluid actuated indicator means disposed intermediate said fluid outlet of said reservoir and said outlet port for visually indicating fluid flow from said fluid reservoir; and (f) flow control means disposed intermediate said indicator means and said outlet of said fluid reservoir for controlling the rate of flow of fluid from the device. - View Dependent Claims (8, 9, 10)
-
-
11. A device for use in infusing medicinal fluid into a patient at a controlled rate comprising:
-
(a) a base having a receiving chamber formed therein; (b) a hollow cannula mounted within said receiving chamber at said base; (c) stored energy means for forming, in conjunction with said base a fluid reservoir having an inlet in communication with said hollow cannula and an outlet, said stored energy means comprising a laminate assemblage including at least one initially generally planar distendable member superimposed over said base and at least one coating layer affixed to said distendable member, said laminate assembly being distendable as a result of pressure imparted by the fluids to be infused, to establish internal stresses, said stresses tending to move said laminate assemblage toward a less distended configuration; (d) fill means receivable within said receiving chamber of said base for filling said fluid reservoir; (e) an outlet port in communication with said outlet of said fluid reservoir for dispensing fluids from the device; (f) fluid actuated indicator means disposed intermediate said fluid outlet of said reservoir and said outlet port for visually indicating fluid flow from said fluid reservoir; and (g) flow control means disposed intermediate said indicator means and said outlet of said fluid reservoir, said flow control means comprising rate control means for controlling the rate of flow of fluid from the device and filter means for filtering particulates from fluid flowing toward said rate control means. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
Specification