Micro Diaphragm Pump
First Claim
Patent Images
1. A micro diaphragm pump for delivering infusion liquid comprising:
- a pump chamber;
a diaphragm, that is connected to and partially defines the border of said pump chamber;
an inlet channel with inlet channel proximal end and inlet channel distal end, connected at said inlet channel distal end to said pump chamber;
an outlet channel with outlet channel proximal end and outlet channel distal end, connected at said outlet channel proximal end to said pump chamber;
an inlet check valve with inlet spring and inlet disk, located between said inlet channel distal end and said pump chamber;
an outlet check valve with outlet spring and outlet disk, located between said pump chamber and said outlet channel proximal end; and
,an actuator, which is in intermittent contact with said diaphragm.
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Abstract
The invention relates to micropumps for infusing fluids. More specifically, the present disclosure describes and illustrates a micropump design that may be useful for infusing insulin into a diabetic patient. The disclosed design employs a pump chamber that has a diaphragm and a plurality of check valves that are configured to avoid leakage from the reservoir through the pump engine and into an infusion device and, also, to ensure the complete, accurate evacuation of the pump chamber.
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Citations
64 Claims
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1. A micro diaphragm pump for delivering infusion liquid comprising:
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a pump chamber; a diaphragm, that is connected to and partially defines the border of said pump chamber; an inlet channel with inlet channel proximal end and inlet channel distal end, connected at said inlet channel distal end to said pump chamber; an outlet channel with outlet channel proximal end and outlet channel distal end, connected at said outlet channel proximal end to said pump chamber; an inlet check valve with inlet spring and inlet disk, located between said inlet channel distal end and said pump chamber; an outlet check valve with outlet spring and outlet disk, located between said pump chamber and said outlet channel proximal end; and
,an actuator, which is in intermittent contact with said diaphragm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of delivering infusion liquid comprising the steps of:
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drawing infusion liquid into a pump chamber by moving an actuator and diaphragm into a first position; and
,expelling infusion liquid from said pump chamber by moving said actuator and said diaphragm into a second position; wherein said infusion liquid flows through an inlet channel and an inlet check valve with inlet spring and inlet disk while being drawn into said pump chamber, and said infusion liquid flows through an outlet channel and an outlet check valve with outlet spring and outlet disk while being expelled from said pump chamber. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification