DIALYSIS SYSTEM WITH EFFICIENT BATTERY BACK-UP
First Claim
Patent Images
1. A medical fluid machine comprising:
- an enclosure; and
electronics located within the enclosure and operable to control delivery of the medical fluid, the electronics configured to be powered by an external electrical power source or a back-up battery, the electronics including a transistor in electrical communication with the battery, and a voltage regulator configured to vary a gate voltage at the transistor due to varying battery voltage and/or load current so as to maintain an at least substantially steady supply voltage to the load.
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Abstract
A medical fluid machine includes: an enclosure; at least one medical fluid delivery component located inside the enclosure, the component capable of being powered by an external power source or a back-up battery; a transistor in electrical communication with the battery; and a regulator configured to: (i) receive as feedback a supply voltage; and (ii) vary a gate voltage at the transistor to maintain the supply voltage at least substantially at a desired level.
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Citations
20 Claims
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1. A medical fluid machine comprising:
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an enclosure; and electronics located within the enclosure and operable to control delivery of the medical fluid, the electronics configured to be powered by an external electrical power source or a back-up battery, the electronics including a transistor in electrical communication with the battery, and a voltage regulator configured to vary a gate voltage at the transistor due to varying battery voltage and/or load current so as to maintain an at least substantially steady supply voltage to the load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A medical fluid machine comprising:
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an enclosure; at least one medical fluid delivery component located inside the enclosure, the component capable of being powered by an external power source or a back-up battery; a transistor in electrical communication with the battery; and a regulator configured to;
(i) receive as feedback a supply voltage, and (ii) vary a gate voltage at the transistor to maintain the supply voltage at least substantially at a desired level. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A medical fluid machine comprising:
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an enclosure; at least one medical fluid delivery component located inside the enclosure, the component capable of being powered by an external power source or a back-up battery; a transistor in electrical communication with the battery; and a regulator configured to vary a gate voltage at the transistor to maintain the supply voltage at least substantially at a desired level; and a voltage comparator configured to switch when the gate voltage reaches a threshold value, causing the gate voltage of the transistor to drop at least substantially to zero. - View Dependent Claims (18, 19, 20)
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Specification