Insulin Pump Preset Bolus Selection Interface
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Solution Overview
Problem
Patients with diabetes face challenges in administering accurate bolus insulin doses due to complexity in carbohydrate counting and multistep programming in conventional insulin pumps, leading to decreased compliance and increased errors in dosage.
Innovation Solution
A medical device that allows easy selection of preset bolus insulin doses based on total daily bolus insulin dose, using a simplified control interface without a graphical user interface, where doses are selected via a button and confirmed through vibration, sound, or a second button, reducing the need for carbohydrate counting and complex calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional insulin pumps require multistep programming for bolus dosage, then dosage accuracy can be maintained, but ease of operation deteriorates and compliance decreases
Solution Approach 1:
The system pre-calculates and stores multiple preset bolus insulin doses based on carbohydrate counts before the user needs to administer insulin. This eliminates the need for real-time complex calculations and multistep programming, allowing users to simply select from pre-computed options while maintaining dosage accuracy.
Solution Approach 2:
The insulin pump automatically performs the complex tasks of carbohydrate counting, insulin-to-carb ratio calculations, and bolus dose determination without requiring manual user input for these calculations. The system serves itself by autonomously computing and presenting appropriate bolus doses based on user-selected carbohydrate amounts.
2Adaptability or versatility
If manual programming of bolus dosage is required, then flexibility in dosage selection is maintained, but error rate increases due to inadvertent dosing errors
Solution Approach 1:
The system provides feedback to the user by displaying the calculated bolus dose and allowing verification before administration. The pump presents preset options based on selected carbohydrate amounts, enabling users to verify the suggested dose and correct any errors before insulin delivery, thereby reducing inadvertent dosing errors while maintaining flexibility.
Solution Approach 2:
The system introduces an intermediary layer of preset bolus options that mediates between the user's carbohydrate selection and the final insulin dose. This intermediate step of selecting from pre-calculated presets reduces direct manual programming errors while still allowing flexible adaptation to different meal sizes and compositions.
3Measurement precision
If complex carbohydrate counting and calculations are required for bolus dose, then dosage precision is maintained, but time consumption increases and compliance decreases
Solution Approach 1:
The system performs complex carbohydrate counting and insulin dose calculations in advance, storing multiple preset bolus options before the user needs to administer insulin. This preliminary computation eliminates real-time calculation time, allowing users to quickly select from pre-computed doses while maintaining precision through accurate pre-calculated values.
Solution Approach 2:
The system creates copies of pre-calculated bolus doses based on standard carbohydrate counts and user-specific insulin-to-carb ratios. These copied preset options provide immediate, precise dosage recommendations without requiring the user to perform time-consuming calculations, as the complex math has already been performed and stored.
Data Source
AI summary
A medical device and method for determining a basal dose of insulin and a bolus dose of insulin to be administered for glycemic control is provided. The medical device includes an insulin pump, a control interface including a button configured to select one of a plurality of present bolus insulin doses based on input from a user (e.g., a patient), and a controller configured for executing instructions to determine a basal insulin delivery rate based, at least in part, on a total daily basal insulin dose and to determine the plurality of preset bolus insulin doses based, at least in part, on a total daily bolus insulin dose.