Design of a Portable Venomanometer System for Episcleral Venous Pressure Measurement

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ASME 2020 Design of Medical Devices Conference: Frontiers in Biomedical Devices


Traumatic brain injury (TBI) has been considered a precarious health issue especially within the military population. Research has shown that early treatment of TBI could reduce possible neurocognitive injury. However, the nature of military triage has created challenges for early TBI detection. Intracranial pressure (ICP), which is used as a biomarker of outcomes in TBI, is not only expensive to measure but is also invasive and requires specialized surgical and procedural skills. Episcleral venous pressure (EVP) was proven to be a good alternative biomarker to ICP. However, the current technology in measuring EVP is not portable, and requires a skilled operator with a slit-lamp for testing. Moreover, the measurement is highly subjective and depends on the operator’s skill and technique. Therefore, there is a critical need for alternative technology for non-clinical TBI diagnosis. In this paper, we present an improved venomanometer design for measuring EVP in the field.


Permission to add to the institutional repository of the University of Nebraska at Omaha granted by the American (ASME). ASME is the original publisher and copyright holder. This paper is accessible in the ASME Digitla Library at https://doi.org/10.1115/DMD2020-9021