Fluid delivery apparatus with adjustable flow rate control
First Claim
1. A dispensing apparatus for dispensing fluids to a patient comprising:
- (a) a housing having a fluid reservoir for containing fluid to be dispensed to the patient, said housing being provided with an inlet for permitting fluid flow into said fluid reservoir and an outlet for permitting fluid flow from said fluid reservoir;
(b) fluid displacement means disposed within said housing for movement between a first position and a second position to cause said fluid contained within said fluid reservoir to flow toward said outlet;
(c) stored energy means disposed within said outer housing for acting upon said fluid displacement means to cause said fluid displacement means to move toward said second position, said stored energy means comprising a constant force spring;
(d) fill means carried by said housing for filling said reservoir with the fluid to be dispensed;
(e) flow control means carried by said housing for controlling fluid flow from said reservoir to the patient, said flow control means comprising a selector member rotatably mounted within said housing, said selector member having a plurality of fluid passageways formed therein; and
(f) dispensing means connected to said housing and in communication with said plurality of fluid passageways formed in said control member for dispensing fluid to the patient.
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Accused Products
Abstract
A compact fluid dispenser for use in controllably dispensing fluid medicaments, such as, antibiotics, analgesics, and like medicinal agents from the device reservoir. The fluid dispenser includes a unique stored energy mechanism which takes the form of a constant force spring member of novel design that provides the force necessary to continuously and substantially uniformly expel fluid from the device reservoir. The device also includes novel adjustable flow rate control assembly that is disposed intermediate the fluid reservoir outlet and the outlet port of the device for precisely controlling the rate of fluid flow from the outlet port toward the patient.
113 Citations
36 Claims
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1. A dispensing apparatus for dispensing fluids to a patient comprising:
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(a) a housing having a fluid reservoir for containing fluid to be dispensed to the patient, said housing being provided with an inlet for permitting fluid flow into said fluid reservoir and an outlet for permitting fluid flow from said fluid reservoir;
(b) fluid displacement means disposed within said housing for movement between a first position and a second position to cause said fluid contained within said fluid reservoir to flow toward said outlet;
(c) stored energy means disposed within said outer housing for acting upon said fluid displacement means to cause said fluid displacement means to move toward said second position, said stored energy means comprising a constant force spring;
(d) fill means carried by said housing for filling said reservoir with the fluid to be dispensed;
(e) flow control means carried by said housing for controlling fluid flow from said reservoir to the patient, said flow control means comprising a selector member rotatably mounted within said housing, said selector member having a plurality of fluid passageways formed therein; and
(f) dispensing means connected to said housing and in communication with said plurality of fluid passageways formed in said control member for dispensing fluid to the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A dispensing apparatus for dispensing fluids to a patient comprising:
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(a) a housing having a fluid reservoir for containing fluid to be dispensed to the patient, said housing being provided with an inlet for permitting fluid flow into said fluid reservoir and an outlet for permitting fluid flow from said fluid reservoir;
(b) fluid displacement means disposed within said housing for movement between a first position and a second position to cause said fluid contained within said fluid reservoir to flow toward said outlet;
(c) stored energy means disposed within said outer housing for acting upon said fluid displacement means to cause said fluid displacement means to move toward said second position, said stored energy means comprising a constant force spring;
(d) fill means carried by said housing for filling said reservoir with the fluid to be dispensed;
(e) flow control means carried by said housing for controlling fluid flow from said reservoir to the patient, said flow control means comprising;
(i) a selector member rotatably mounted within said housing, said flow control member having a plurality of fluid passageways formed therein; and
(ii) a flow rate control member mounted within said housing, said flow control member having a plurality of elongated fluidic flow control channels in communication with said plurality of fluid passageways formed in said selector member; and
(f) dispensing means connected to said housing and in communication with said plurality of fluid. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A dispensing apparatus for dispensing fluids to a patient comprising:
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(a) a housing having a fluid reservoir for containing fluid to be dispensed to the patient, said housing being provided with an inlet for permitting fluid flow into said fluid reservoir and an outlet for permitting fluid flow from said fluid reservoir and including a vial receiving chamber for receiving a first fill vial;
(b) fluid displacement means disposed within said housing for movement between a first position and a second position to cause said fluid contained within said fluid reservoir to flow toward said outlet;
(c) stored energy means disposed within said outer housing for acting upon said fluid displacement means to cause said fluid displacement means to move toward said second position, said stored energy means comprising a constant force spring;
(d) fill means carried by said housing for filling said reservoir with the fluid to be dispensed, said fill means comprising said fill vial receivable within said vial receiving chamber;
(e) flow control means carried by said housing for controlling fluid flow from said reservoir to the patient, said flow control means comprising;
(i) a selector member rotatably mounted within said housing, said flow control member having a plurality of fluid passageways formed therein; and
(ii) a flow rate control member mounted within said housing, said flow control member having a plurality of elongated fluidic flow control channels in communication with said plurality of fluid passageways formed in said selector member; and
(f) dispensing means connected to said housing and in communication with said plurality of fluid. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A dispensing apparatus for dispensing fluids to a patient comprising:
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(a) a housing having a fluid reservoir for containing fluid to be dispensed to the patient, said housing being provided with an inlet for permitting fluid flow into said fluid reservoir and an outlet for permitting fluid flow from said fluid reservoir, said housing including;
(i) a first vial receiving chamber; and
(ii) a removable cover for covering said first vial receiving chamber;
(b) fluid displacement means disposed within said housing for movement between a first position and a second position to cause said fluid contained within said fluid reservoir to flow toward said outlet;
(c) stored energy means disposed within said outer housing for acting upon said fluid displacement means to cause said fluid displacement means to move toward said second position, said stored energy means comprising a constant force spring;
(d) fill means carried by said housing for filling said reservoir with the fluid to be dispensed, said fill means comprising said first fill vial;
(e) flow control means carried by said housing for controlling fluid flow from said reservoir to the patient, said flow control means comprising a flow rate control member mounted within said housing, said flow control member having a plurality of elongated fluidic flow control channels; and
(f) dispensing means connected to said housing and in communication with said plurality of elongated fluidic flow control channels. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification