Infusion Pump Battery Low Power Mode Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rechargeable batteries in portable infusion pump systems face over-discharge issues due to idle current drain, which can reduce their lifespan and require external charging, complicating manufacturing and storage.
Innovation Solution
The infusion pump system employs a monitor circuit and resistor configuration to place the rechargeable battery in a low power mode, reducing current drain even when fully charged, without needing an external voltage source, thus preserving energy and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the infusion pump system uses a rechargeable battery to facilitate portability, then the portability and cost-effectiveness are improved, but the battery is subject to over-discharge due to idle current drain, which damages the battery and reduces its lifespan
Solution Approach 1:
The patent applies preliminary action by providing a low-resistance connection between the third terminal and return terminal before the battery is fully discharged. This preemptive measure triggers the monitor circuit to detect the reduced voltage and switch the battery to low power mode, preventing the harmful over-discharge condition before it occurs. The system takes advance action to protect the battery during storage and idle periods.
2Ease of operation
If the infusion pump system remains in normal power mode during idle periods, then the system is ready for immediate use, but the idle current drain reduces the battery energy supply and may cause over-discharge
Solution Approach 1:
The patent implements dynamics by enabling the battery to dynamically switch between normal power mode and low power mode based on operational conditions. The monitor circuit continuously monitors battery voltage and automatically transitions to low power mode when the low-resistance connection is provided, reducing current drain during idle periods. The system can later be awakened to normal mode when needed, balancing readiness with energy conservation.
3Reliability
If the battery is placed in low power mode to reduce current drain, then the battery lifespan is extended, but the system requires additional circuitry and control mechanisms
Solution Approach 1:
The patent applies self-service by designing a system where the monitor circuit automatically detects the low-resistance connection condition and autonomously switches the battery to low power mode without requiring external control or complex processing. The existing monitor circuit, originally designed for voltage sensing, is utilized to also detect the shutdown condition, allowing the battery to self-regulate its power state based on system conditions.
Data Source
AI summary
Some embodiments of an infusion pump system can include a controller in electrical communication with a pump device so as to provide selected dosages of a medicine to a user over a period of time. The infusion pump system can employ a number of power management techniques to reduce the likelihood current drain of a rechargeable battery of the infusion pump system.