Piston-Style Pen Cap Detection for Bolus Stacking Prevention
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Solution Overview
Problem
People with diabetes face challenges in determining appropriate insulin doses, leading to potential hyperglycemia or hypoglycemia due to insufficient or excessive insulin administration, and there is a need for reliable data collection tools to improve therapy decisions.
Innovation Solution
A piston-style detector mechanism in a pen cap for medication delivery pens that tracks capping and uncapping events, coupled with an analyte sensor system and mobile computing device, to provide therapy recommendations based on real-time glucose data and insulin injection history.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a piston-style detector mechanism is implemented to track capping events, then data collection reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical detection systems with a piston-style detector mechanism that uses a simple piston moving within a cylinder to trigger optical or electronic sensors. This mechanical substitution approach simplifies the overall system while maintaining reliable detection of capping events through the piston's linear motion that reliably actuates sensors at specific positions.
Solution Approach 2:
The piston-style detector mechanism is designed to be self-actuating through the natural motion of the pen cap during capping and uncapping. The piston automatically moves and triggers detection without requiring external power sources, complex electronics, or user intervention, thereby simplifying the device while maintaining reliable data collection.
2Measurement precision
If real-time glucose data collection and therapy recommendation systems are integrated, then therapy decision accuracy is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a unified pen cap system that simultaneously tracks capping events, collects glucose data, stores therapy information, and provides recommendations. This multi-functional approach consolidates what would otherwise require separate devices into a single integrated system, improving therapy decision accuracy while managing complexity through functional consolidation.
Solution Approach 2:
The system implements feedback loops where real-time glucose data and capping event information are continuously monitored, analyzed, and used to generate therapy recommendations. This feedback mechanism improves therapy decision accuracy by dynamically adjusting recommendations based on actual user behavior and physiological data, while the feedback structure is designed to be computationally efficient to manage system complexity.
Data Source
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AI summary
A pen cap for a medication delivery pen includes a piston-style detector mechanism. The piston-style detector mechanism includes at least an inner shell having first open end through which the medication delivery pen can be inserted, a second end opposite the first end, a sidewall defined by an outer surface and an opposing inner surface, and a passageway extending from the outer surface to the inner surface. The sidewall extends between the first end and the second end thereby defining a pen-receiving cavity there between. The piston-style detector mechanism further includes at least one switch and a translatable shaft at least partially disposed in the passage. The translatable shaft includes a body that extends at least from a pen-interfacing portion in the pen-receiving cavity to a switch-interfacing portion thereof. The translatable shaft is oriented to travel from a first location to at least a second location during capping of a medical delivery pen into the inner shell to toggle the at least one switch.