Resettable Autoinjector Training Device With Haptic Feedback
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Solution Overview
Problem
There is a need for training devices that accurately mimic the operation of newer autoinjector devices, which have varying sizes and functionalities, to reduce user error during high-stress situations.
Innovation Solution
An injector training device comprising a housing, trigger assembly, and drum assembly with features that replicate the sounds and haptic feedback of real autoinjectors, allowing users to practice the correct sequence of actions, including rotating the cap, activating the trigger, and using the lockout mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a training device is designed to accurately mimic newer autoinjector devices with varying sizes and functionalities, then the accuracy and realism of the training device is improved, but the device complexity increases
Solution Approach 1:
The training device is divided into distinct functional modules: a housing component, a trigger assembly with drum, and a cap assembly with spline. Each module can be independently manufactured and assembled, allowing the complex realistic simulation functions to be achieved through coordinated simple components rather than a single complex structure.
Solution Approach 2:
The training device creates a simplified copy of the autoinjector mechanism that replicates key functional elements (drum rotation, trigger actuation, cap removal) and sensory feedback (clicking sounds, haptic feedback) without requiring the full complexity of the actual autoinjector device. This allows accurate training while maintaining manufacturing simplicity.
2Reliability
If the training device includes multiple interlocking components and mechanical features to simulate real autoinjector operation, then the realism and feedback provided to users is improved, but the ease of manufacture decreases
Solution Approach 1:
The device is segmented into three main assemblies that can be manufactured separately using standard injection molding techniques and then assembled together. The housing, trigger assembly, and cap assembly are each designed as discrete components with standardized interfaces, making them easier to manufacture individually and reducing overall manufacturing complexity despite the realistic functionality achieved through their interaction.
3Ease of operation
If the drum assembly includes anti-rotation snaps and reset snaps to provide haptic feedback, then the user feedback and training effectiveness are improved, but the device complexity increases
Solution Approach 1:
The drum assembly features self-actuating mechanical elements where the rotation of the drum automatically engages and disengages the anti-rotation snaps and reset snaps, generating haptic feedback without requiring additional actuators or control systems. The mechanical interaction between the drum protrusions and the snap elements creates the feedback naturally through the operating motion itself.
Solution Approach 2:
The drum assembly incorporates mechanical feedback elements (anti-rotation snaps and reset snaps) that provide tactile and auditory feedback to the user during operation. The clicking sounds and haptic sensations are generated directly by the mechanical interaction between the drum and these snap elements, providing immediate feedback about the device state without electronic sensors or systems.
Data Source
AI summary
An injector training device configured to mimic a real portable autoinjector mixing and delivery device including mimicking pressure required to twist the cap, various clicking noises, bump trigger, and the extension of the bump trigger that mimics a lockout needle shield. The injector training device is also configured to be resettable for multiple training sessions.