Resettable Autoinjector Training Device with Rotating Locking Collar
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Solution Overview
Problem
Self-administration of injectable medications using existing injection devices is hindered by user anxiety, fear of incomplete dosing, needle stick injuries, and lack of medical expertise, leading to potential incomplete medication administration and safety risks.
Innovation Solution
A resettable injection training device with a safety shield and plunger mechanism that simulates needle insertion, allowing for repeated practice and safe resetting, featuring a rotating plunger locking collar and resetting cap to facilitate ease of use and familiarity with the injection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a non-resettable training device is used, then the device can provide initial training, but the device cannot be reused and must be discarded after single use
Solution Approach 1:
The training device incorporates a resettable plunger mechanism that can be returned to its initial position after each use, allowing the device to be recovered and reused multiple times rather than discarded after single use
2Productivity
If a resettable device is implemented, then repeated practice is enabled, but the device complexity increases due to additional resetting mechanisms
Solution Approach 1:
The plunger is designed to automatically reset to its initial position through a self-resetting mechanism that engages when the plunger is in the extended position, eliminating the need for manual resetting operations and reducing overall device complexity
Solution Approach 2:
A reset indicator serves as an intermediary component that visually communicates the plunger's position and reset status to the user, enabling repeated practice without requiring complex control systems
3Object-affected harmful factors
If the safety shield is always extended, then needle protection is maximized, but the device cannot be properly reset and reused
Solution Approach 1:
The safety shield is designed to dynamically change its position between extended and retracted states based on the plunger's position, automatically extending when the plunger is extended and retracting when the plunger is reset, thereby providing needle protection during use while enabling proper resetting for reuse
Data Source
AI summary
A resettable injection training device embodiment including an outer housing having a proximal end and a distal end, the housing defining a chamber there within, a safety shield having a proximal end and a distal end, the safety shield having a retracted, locked position, a first extended unlocked position, a second extended unlocked position, and a second extended locked position is described herein. The device embodiment including a plunger having a proximal a distal end, the plunger having a retracted and an extended position. The device may include a rotating plunger locking collar, an unlocking member coupled to the plunger, wherein rotation of the unlocking member from a first position to a second position unlocks the device and releases the safety shield from the retracted, locked position. The device may further include a resetting cap for resetting the device for a subsequent use.