Resettable Injection Training Device Shield Mechanism
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Solution Overview
Problem
Current injection devices lack advanced digital capabilities, leading to concerns such as incomplete medication administration, needle contamination, and user anxiety due to their size, operation, and the need for single-use disposal, which can be economically wasteful and pose risks for users with little medical knowledge.
Innovation Solution
A resettable injection training device with a body comprising an inner and outer body, a plunger, and a retractable shield, where the shield is extended and retracted using specific threshold forces, optionally without a needle or medicament, to simulate injection and facilitate training while allowing for resetting and reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single-use injection devices are used, then safety and reliability are improved, but economic cost and waste increase
Solution Approach 1:
The patent implements a resettable mechanism that allows the injection device to be reused after a single use. The spring-loaded plunger mechanism can be reset by retracting the plunger and re-engaging the latching mechanism, enabling the device to be prepared for another injection cycle. This recovering approach eliminates the need for single-use disposal while maintaining safety through controlled reset procedures.
2Ease of operation
If auto-injection devices are used, then convenience is improved, but device complexity and user anxiety increase
Solution Approach 1:
The injection device is divided into distinct functional modules: a plunger assembly, a latching mechanism, a trigger assembly, and a reset mechanism. Each module performs a specific function and can be independently understood and operated. The plunger handles injection delivery, the latching mechanism manages engagement, the trigger initiates release, and the reset system prepares for reuse. This segmentation reduces perceived complexity by making the device's operation more predictable and manageable.
3Reliability
If needle re-capping is required, then needle reuse is enabled, but risk of accidental sticking increases
Solution Approach 1:
The patent extracts the needle from the main device body, allowing it to be removed and discarded after a single use while the main injection mechanism remains reusable. The needle is held in a separate needle hub that can be detached from the cartridge assembly. This separation enables the needle to be taken out and disposed of safely after one use, eliminating the risk of accidental sticking during re-capping while allowing the expensive injection mechanism to be reset and reused.
4Measurement precision
If injection training is provided, then user familiarity and accuracy are improved, but device availability and cost increase
Solution Approach 1:
The patent creates a copy or replica injection device specifically designed for training purposes. This training device replicates the appearance, size, and basic operation of the actual injection device but uses inert materials instead of real medication and needles. The training device can be reset and reused indefinitely for practice sessions, providing accurate familiarization with the device's operation without consuming expensive medical supplies or posing safety risks.
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 user anxiety and increases familiarity with injection processes, providing a cost-effective and safe training tool that can be reused, thereby improving the efficiency and accuracy of medication administration.
Implementation Method 1
a biasing member associated with the body, the biasing member comprising a first end and a second end, the first end abutting a proximal end of the body, and the second end abutting the shield, wherein extension of the biasing member extends the shield
Implementation Method 2
a first threshold force on the plunger causes the at least one second protrusion to traverse the at least one first protrusion to extend the shield
Data Source
AI summary
Embodiments of a resettable injection training device are provided herein. The resettable injection training device includes a body and a retractable shield, extendable and retractable relative to the body of the device, in an embodiment. In another embodiment, the resettable injection training device may include an injection simulation member. The retractable shield may be lockable in an extended position, and may be unlocked to retract the shield for a subsequent use of the device in one non-limiting embodiment. In another non-limiting embodiment, a resetting component may be used to retract the shield to reset the device.