Dwell Timer in Injection Devices for Personalized Reflux Prevention
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Solution Overview
Problem
Conventional injection devices provide generic dwell times that do not account for individual user factors, leading to potential medicament reflux and non-compliance due to needle aversion or pain sensitivity.
Innovation Solution
An injection device with sensors and processors dynamically determines dwell time based on injection speed, dosage amount, user weight, body fat percentage, and needle aversion, providing personalized feedback through display or mobile devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If generic dwell times are used in conventional injection devices, then the device structure remains simple, but medicament reflux occurs and user compliance decreases
Solution Approach 1:
The patent implements a dynamic dwell timer that adjusts the dwell time based on real-time detection of injection parameters (injection speed, dosage amount, user characteristics) rather than using a fixed generic dwell time. This dynamic adjustment resolves the contradiction by adapting the dwell time to specific injection conditions, preventing medicament reflux while maintaining reasonable device complexity through automated sensing and processing.
Solution Approach 2:
The system incorporates feedback mechanisms where sensors detect injection parameters and the processor uses this information to determine the appropriate dwell time, which is then displayed to the user. This feedback loop ensures reliable injection effectiveness by preventing reflux while managing device complexity through intelligent control algorithms.
2Ease of operation
If personalized dwell time determination is implemented, then user compliance improves, but device complexity increases
Solution Approach 1:
The injection device performs self-service by automatically detecting user characteristics (weight, body fat percentage) and injection parameters, then autonomously determining the personalized dwell time. This reduces the burden on users while improving compliance, and manages electronics complexity through integrated sensing and processing capabilities that operate without external intervention.
Solution Approach 2:
The system changes operational parameters (dwell time) based on detected user parameters (weight, body fat percentage, injection speed, dosage amount). This parameter adaptation improves user compliance by providing personalized instructions while managing device complexity through systematic processing of multiple input parameters to determine the optimal dwell time.
3Reliability
If dwell time is extended to prevent reflux, then injection effectiveness improves, but time consumption increases
Solution Approach 1:
The dynamic dwell timer adjusts the dwell time dynamically based on detected injection parameters rather than using a fixed extended dwell time for all cases. This resolves the contradiction by providing sufficient dwell time only when necessary (when injection parameters indicate reflux risk), thereby preventing medicament reflux while minimizing unnecessary time consumption for users with lower risk profiles.
Data Source
AI summary
Electronics assemblies for an injection device. At least one of the electronics assemblies include: one or more sensors configured to capture injection information of the injection device; one or more processors configured to be communicatively coupled to the one or more sensors; and a memory communicatively coupled to the one or more processors, the memory storing instructions which, when executed by the one or more processors, cause the one or more processors to perform operations. The operations include: receiving the injection information from the one or more sensors; determining, based on the injection information, a dwell time for a user of the injection device; and causing one or more display devices to provide feedback information to the user, the feedback information indicating the determined dwell time.