Portable VOG Device for Noninvasive TBI Screening
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Solution Overview
Problem
Current diagnostic tools for mild traumatic brain injury (mTBI) are inadequate for forward-deployed military settings or remote locations, as they require large stationary systems and lack a noninvasive, objective method for detecting vestibular and neurological abnormalities.
Innovation Solution
A portable VOG device using head-mounted goggles with eye tracking technology and virtual reality-based visual stimuli to administer neurologic tests, allowing for objective physiologic response analysis and diagnosis of TBI, including mTBI, through a combination of oculomotor, vestibular, and reaction time analytic variables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional diagnostic tools are used for TBI screening, then measurement precision can be achieved, but device complexity and portability issues arise
Solution Approach 1:
The patent replaces complex mechanical diagnostic equipment with a portable video oculography (VOG) system that uses electronic sensors, cameras, and computer processing to achieve the same diagnostic precision. The VOG system captures eye movement data through video imaging rather than requiring complex mechanical apparatus, enabling portable TBI screening while maintaining measurement accuracy.
Solution Approach 2:
The patent creates a portable replication of diagnostic functionality through the VOG system. Instead of requiring large stationary diagnostic equipment, the system copies the essential measurement capabilities in a compact form factor that can be deployed in forward-deployed military settings and remote locations, maintaining diagnostic accuracy while improving portability.
2Measurement precision
If comprehensive TBI screening is performed, then diagnostic accuracy improves, but testing time increases
Solution Approach 1:
The patent extracts and prioritizes the most critical diagnostic variables from comprehensive TBI screening protocols. By identifying and measuring only the essential oculomotor, vestibular, and reaction time parameters that provide maximum diagnostic information, the system reduces testing time while maintaining accuracy in detecting mTBI and distinguishing it from psychological co-morbidities.
Solution Approach 2:
The patent applies partial action by selecting a representative subset of diagnostic tests that adequately assess TBI without requiring the full comprehensive battery. The VOG system measures key variables such as eye movement latency, accuracy, and patterns that are sufficient for diagnosis, avoiding the time-consuming nature of complete screening protocols while maintaining diagnostic validity.
3Reliability
If objective measurement methods are used, then diagnostic reliability improves, but device complexity increases
Solution Approach 1:
The patent replaces subjective clinical assessment with objective automated measurement through the VOG system. Electronic sensors and computer algorithms automatically analyze eye movement data, vestibular responses, and reaction times, eliminating observer bias and subjectivity while maintaining reliability. The automated processing reduces the complexity burden compared to requiring multiple manual assessment procedures.
Data Source
AI summary
A portable VOG device is disclosed that will facilitate the effective and efficient screening for TBI in military personnel in forward deployed military settings or remote locations using minimally trained staff. This includes the establishment of a protocol that will provide cost effective pre-screening of military personnel prior to deployment to establish a baseline of brain function prior to possible future injury. The efficiency of the device will promote subsequent follow-up screening to assess the effectiveness of prescribed TBI treatment. Further protocols for diagnosis and rehabilitation applications using the same virtual reality portable device will allow more advanced usage for clinicians providing ongoing evaluation and treatment.