Article by: Justin Horwath Minneapolis / St. Paul Business Journal March 9, 2012 – 5:00 AM CST For his medical-device startup, John Dinusson applies the basic principle of evolution: adaptability. His Minneapolis-based company, OrthoCor Medical Inc., has found creative ways to launch its signature product and raise funds amid a tough environment for med-tech startups. In 2006, OrthoCor paid the University of Minnesota to help develop a device that targets knee pain, Active Knee System. Patients wrap the system around an aching knee, typically wearing it during two-hour therapy sessions. Pods attached to the device activate electromagnetic waves and heat…