Resettable Autoinjector Training Device with Audible Feedback
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Solution Overview
Problem
Patients face anxiety and inefficiency when using self-injection devices due to fear of needles, pain, and lack of experience, leading to incomplete doses and safety concerns, particularly in at-home or outpatient settings where training is limited.
Innovation Solution
A resettable injection training device with a safety shield, plunger, and audible signal outputs to simulate medication delivery, allowing repeated practice and easy reset for enhanced familiarity and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If self-injection devices are used for at-home administration, then convenience of drug delivery is improved, but patient anxiety and safety risks increase
Solution Approach 1:
The patent creates a training device that is a copy of the actual autoinjection device, allowing patients to practice the injection procedure repeatedly without risk. The training device replicates the external housing, actuation mechanism, and audible signals of the real device, enabling safe familiarization that reduces anxiety and improves safety when using the actual medicament-delivering device.
2Object-affected harmful factors
If training devices are provided for practice, then patient anxiety is reduced, but device complexity increases
Solution Approach 1:
The training device extracts only the essential training functions from the complete autoinjection device - the external housing, actuation mechanism, and audible signaling - while deliberately excluding the medicament delivery system. This extraction allows the device to maintain training functionality while reducing complexity by removing the complex needle and medicament reservoir components.
3Measurement precision
If the device allows repeated practice, then injection accuracy is improved, but reset mechanism complexity increases
Solution Approach 1:
The reset mechanism is designed to be self-service, where the actuation member itself doubles as the reset mechanism. After training use, the actuation member can be manually returned to its initial position, automatically resetting the device for repeated practice without requiring separate reset components or complex mechanical systems.
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
The device reduces patient anxiety and improves injection accuracy by providing a safe and efficient training experience, simulating the injection process while ensuring safe reuse and familiarity with the device.
Implementation Method 1
a plunger having a proximal end and a distal end, the plunger moveable proximally and distally within the inner housing to simulate delivery of medicament
Implementation Method 2
a first signal output audibly signaling actuation of the plunger; a second signal output audibly signaling completion of an injection simulation
Data Source
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Figure 3
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AI summary
In embodiments herein, a resettable auto injection training device is provided, wherein actuation of the device requires both safety shield actuation and actuation member actuation. The training device includes audible feedback signaling actuation and completion of injection simulation. The training device audible feedback may be provided by movement of mechanical components relative to one another in embodiments herein. Further embodiments include safety features provided by compression of the safety shield post training to lock a plunger and injection simulation device within the training device until reset.