Instromedix, Inc. was a medical technology company based in Hillsboro, Oregon, located at 7431 NE Evergreen Parkway. Historically, the company was recognized for developing medical monitoring equipment, including ambulatory blood pressure monitors/watches such as the Pulse Time BP-10 and BP-50, as well as electrocardiogram (ECG) monitoring devices.
Heart Watch: While specific, detailed information on "Model 5215" is not directly detailed in the search snippets, Instromedix developed and marketed early wearable cardiac diagnostic tools, including patient-activated ECG monitors and "heart watch" style devices in the 1970s.
It appears you may be looking for information on an earlier wearable cardiac monitor developed by Dr. Semler and Instromedix. If this refers to a modern, currently available device, the search results point to modern equivalents like the CardiacSense medical watch for continuous 24/7 heart monitoring. UNIQUE ONLY ONE LEFT IN BRAND NEW WORKING CONDITION.THANK YOU FOR LOOKING.GOOD LUCK.