Digital Tuning Fork for Diabetic Neuropathy Sensation Testing
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Solution Overview
Problem
Current vibratory devices for testing sensation, such as the traditional tuning fork, suffer from subjectivity in administering the test due to variable initial vibration force and duration, making it difficult to accurately assess diabetic peripheral neuropathy, which is a precursor to foot ulcers in diabetic patients.
Innovation Solution
A digital tuning fork device with an electronic vibratory mechanism, timer, and controller that provides a uniform initial vibration and controlled degradation, allowing for objective and quantifiable assessment by measuring the duration of sensation perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional tuning fork is used for sensation testing, then the device is simple and inexpensive, but the initial vibration force and duration vary due to subjectivity in administration
Solution Approach 1:
The patent replaces the mechanical tuning fork with an electronic vibratory mechanism that uses a motor or piezoelectric element to generate vibrations. This substitution eliminates the subjectivity inherent in manual striking and application of a traditional tuning fork, while maintaining simplicity through electronic control circuits and a small motor or piezoelectric crystal.
Solution Approach 2:
The patent incorporates a timer that provides feedback on the duration of vibration perception. The timer starts when the vibratory mechanism is activated and stops when the patient reports loss of sensation, providing objective, quantifiable data on vibration duration that eliminates subjective estimation and improves measurement precision.
2Device complexity
If manual administration of the tuning fork test is used, then the device complexity is low, but the time measurement is imprecise due to reliance on human reaction time
Solution Approach 1:
The patent uses an integrated timer that automatically starts when the vibratory mechanism is activated and stops when the patient indicates loss of sensation. This electronic timing mechanism eliminates human reaction time errors and provides precise, objective measurement of vibration duration, while the overall device remains simple enough for easy clinical administration.
3Reliability
If the vibratory mechanism provides strong initial vibration, then the sensitivity of the test is improved, but the duration of vibration is reduced
Solution Approach 1:
The patent employs a vibratory mechanism with controllable vibration characteristics, allowing the initial vibration strength and duration to be adjusted or optimized. The electronic control system can modulate the vibration parameters to ensure sufficient initial intensity for sensitive detection while maintaining an extended duration for accurate timing, overcoming the trade-off present in traditional tuning forks.
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 consistent and reproducible results, reducing subjectivity and providing clinicians with accurate, quantifiable data to assess the risk of foot ulcers, thereby improving the diagnostic accuracy for diabetic peripheral neuropathy.
Implementation Method 1
an electronic vibratory mechanism... suitably adapted to transmit vibrations generated by the vibratory mechanism along its length to its terminal external end
Data Source
AI summary
An improved digital tuning fork device for administering a vibratory sensation test to a human subject comprising an integrated vibratory mechanism and timer, with the vibratory mechanism generating vibrations having a known frequency and amplitude, with the amplitude of the vibrations degrading over time to replicate in a controlled manner the natural degradation of vibrations generated by a mechanical tuning fork, and a method of use thereof.