Infusion Pump Accelerometer Activity Adjustment
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Solution Overview
Problem
Conventional insulin infusion pumps require user input to adjust insulin delivery rates based on activity levels, which can lead to inefficiencies and potential fluctuations in blood glucose levels, especially during exercise.
Innovation Solution
A portable insulin infusion pump system equipped with an accelerometer or motion sensor that automatically adjusts insulin dispensation rates based on detected activity levels, allowing for real-time adjustments without user input, and featuring a reusable controller device that can be detached from disposable pump units for cost-effective reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the infusion pump system incorporates an accelerometer and automatic adjustment mechanism, then the responsiveness to activity level changes is improved, but the device complexity increases
Solution Approach 1:
The system automatically detects activity level changes through the accelerometer and self-adjusts the insulin dispensation rate without requiring user intervention. The controller processes accelerometer signals and autonomously modifies pump operation parameters, enabling the device to serve itself in monitoring and adjustment functions.
Solution Approach 2:
The patent replaces manual user input and mechanical adjustment mechanisms with an electronic accelerometer-based detection system and automated control circuitry. The accelerometer electronically senses motion patterns, and the control system electronically adjusts dispensation rates, substituting mechanical user interaction with electronic sensing and control.
2Loss of substance
If the controller device is made reusable and detachable from disposable pump units, then the cost-effectiveness is improved, but the device complexity increases
Solution Approach 1:
The system is divided into distinct segments: a reusable controller device and disposable pump units. The controller contains the expensive electronic components (accelerometer, control circuitry, memory) that can be reused, while the pump units with consumable components are disposable. This segmentation allows cost-effective reuse of valuable components while simplifying the disposable portion.
Solution Approach 2:
The reusable controller device is designed to work with multiple disposable pump units, providing universal functionality. The controller can be detached and reused across different pump units, making it a multi-functional component that serves multiple purposes and reduces overall system cost over time.
3Reliability
If automatic adjustment of dispensation rate is implemented, then the glucose level management is improved, but the loss of user control increases
Solution Approach 1:
The system implements a feedback loop where the accelerometer continuously monitors activity level and provides signals to the control circuitry, which then adjusts the dispensation rate accordingly. This closed-loop feedback mechanism ensures that automatic adjustments are based on real-time physiological indicators, improving glucose management reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and timely adjustments to insulin delivery, improving glucose level management by automatically responding to changes in activity levels, while also promoting cost-effectiveness through the reuse of the controller device and reducing the need for frequent pump replacements.
Implementation Method 1
The controller device can include an user interface. The system can also include an accelerometer arranged in the reusable controller and electrically connected to the control circuitry. The accelerometer can provide signals indicative of activity levels of the user.
Data Source
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AI summary
Some embodiments of an infusion pump system can incorporate an accelerometer or other motion sensor to detect the user's activity level. If the user's activity level indicates that he or she is exercising or otherwise at an elevated level, the infusion pump device can be configured to automatically adjust the dispensation rate of a medicine such as insulin. Accordingly, an insulin delivery rate can be corrected to account for a user's activity level (e.g., an elevated activity level during exercise or the like).