Article by: Henry Breimhurst Twin Cities Business March 15, 2013 5:00am 38, President and CEO, OrthoCor Medical Inc. John Dinusson isn’t a doctor, and he doesn’t play one on TV. But the president of Minneapolis-based med-tech companyOrthoCor Medical Inc. is a smart and relentless businessman whose ability to oversee the development and marketing of a knee-pain-relief device has the company off and running. It was Dinusson’s ability to get the OrthoCor Active Knee System into the hands of NBC’s Dr. Oz — who both is a doctor AND plays one on TV — that helped gain the device national attention, which led…