Medical infusion pump with power source voltage logging and method for logging a power source voltage in a medical infusion pump
AssigneeRoche Diagnostics International AG
InventorsReto Aeschlimann, Thomas Rufer
Life of this patent
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Abstract
A medical infusion pump and a method for logging a power source voltage of a medical infusion pump are disclosed. The medical pump may include a power source, a processor, and a voltage supervisor which responds if a voltage (VDD) drops to a response voltage level which is above a reset voltage level of the processor. When the voltage supervisor responds, the processor start logging the voltage (Vbat) of the power source in a memory, thus generating a voltage log. The memory maintains the logged data when the power supply by the power source is interrupted, thus enabling retrospective analysis of the voltage log.
Claims22
A medical infusion pump comprising:
- a processor;
- a power source having a power source voltage (Vbat) and powering the processor;
- and
- a voltage supervisor which monitors a processor supply voltage (VDD) and responds if the processor supply voltage (VDD) drops to a predetermined response voltage level which is above a reset voltage level of the processor,
- wherein when the voltage supervisor responds, the processor starts logging the power source voltage (Vbat) in a memory to generate a voltage log, and
- wherein the memory is designed to maintain the logged data when the power supply by the power source is interrupted to enable retrospective analysis of the voltage log.
A method for logging a power source voltage (Vbat) of a power source in a medical infusion pump, the medical infusion pump comprising a processor, the power source powering the processor with the power source voltage (Vbat), said method comprising:
- detecting if the processor supply voltage drops to a predetermined response voltage level which is higher than a reset voltage level of the processor;
- starting to log the voltage (Vbat) of the power source when the processor supply voltage (VDD) has dropped to the predetermined voltage level to generate a voltage log;
- and
- maintaining the logged data when the power supply by the power source is interrupted to enable a retrospective analysis of the voltage log.
Dependencies are inferred from the claim text.