Injection Simulator Gear Mechanism Damping Grease Resistance
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Solution Overview
Problem
Current training methods for parenteral medication administration lack the accuracy in simulating the resistance and duration of an actual injection, leading to potential underdosing and wastage of medication, especially in self-administration scenarios.
Innovation Solution
A reusable injection training device featuring a gear mechanism with damping grease and spring elements that replicates the resistance and duration of an actual injection, providing audible alerts for simulation completion and allowing for repeatable practice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a known injection device without medication or without a needle is used for training, then the training device is simple and safe to use, but it does not accurately replicate the resistance and duration of an actual injection
Solution Approach 1:
The patent creates a simplified copy of the actual injection device that replicates the essential functional characteristics (resistance and duration) without including the harmful or unnecessary elements (actual medication and needle). The training device copies the resistance profile and injection duration of a real syringe while using safe alternatives like syringeable gel instead of medication.
Solution Approach 2:
The patent modifies the physical parameters of the training device to match those of an actual injection. Specifically, it adjusts the viscosity and volume of the syringeable gel, the dimensions of the plunger and barrel, and the characteristics of the spring mechanism to replicate the resistance force-time profile and injection duration of a real medication syringe.
2Reliability
If liquid medication is present in the injection device during training, then the resistance and duration are accurately simulated, but the patient receives unnecessary medication exposure and potential waste
Solution Approach 1:
The patent replaces expensive, valuable medication with an inexpensive, disposable substitute (syringeable gel). The gel serves the same training function (providing resistance and filling volume) but has negligible value and can be discarded after use without waste concerns. This allows multiple training sessions without wasting expensive medication.
Solution Approach 2:
The patent extracts the essential functional property (liquid volume providing resistance) from the medication itself, separating the training function from the therapeutic function. By removing the medication and retaining only the volume and viscosity characteristics needed for resistance simulation, the device achieves accurate training without medication exposure or waste.
3Ease of operation
If the injection process is simulated without liquid resistance, then the training device is simple to operate, but the patient injects too quickly and may pull the needle out too early
Solution Approach 1:
The patent changes the physical parameters of the training medium (syringeable gel) to match those of actual medication, specifically the viscosity and density. These parameter changes create the appropriate resistance force that naturally controls the injection speed, requiring the user to apply force over the correct time period to complete the injection, thereby teaching proper injection timing.
Solution Approach 2:
The patent copies the resistance characteristics of actual medication by using syringeable gel with matched viscosity and volume properties. This creates a faithful reproduction of the force-time profile experienced during real injection, allowing patients to learn the correct injection duration and speed through tactile feedback without actual medication.
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 ensures accurate simulation of injection time and resistance, reducing the risk of underdosing and medication wastage by mimicking the actual injection process, thereby enhancing patient compliance and training effectiveness.
Implementation Method 1
The cavity can be substantially filled with a damping grease
Implementation Method 2
a reusable injection training device featuring a gear mechanism with damping grease and spring elements
Data Source
AI summary
Injection training devices comprising elements for repeatable and accurate simulation of parenteral injection for training individuals in the administration of one or more medications are provided.