The Ambulatory Raynaud’s Monitor, approximately 9/16 of an inch in length, is shown here in its carrying case. When in the case the monitor will keep time but not record data; it will automatically resume data recording when removed from the case.

The monitor was developed by APL researchers, in collaboration with physicians from the Johns Hopkins Scleroderma Center, to objectively characterize a patient’s condition and severity, measure symptoms in real time, and help gauge treatment effectiveness. The team recently completed initial trials of the miniature device at the Johns Hopkins Medical Institutions in Baltimore.

Credit: Johns Hopkins University Applied Physics Laboratory

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