TRAVERSE CITY, Mich.--(BUSINESS WIRE)--Michael Carroll, M.D. of Traverse City, Michigan, announced today that he has now sold more than 2500 of his “Rotatoreliever” systems. Rotatoreliever is an innovative and easy-to-use system designed to heal shoulder pain. The product was designed by Dr. Carroll, a physician who invented the system in an effort to cure his own rotator cuff issues, which were causing him great discomfort and pain during sleeping hours.