MINNEAPOLIS--(BUSINESS WIRE)--Medtronic, Inc. (NYSE: MDT) today reported results of an retrospective study available online and in an upcoming print edition of the Journal of Spinal Disorders and Techniques that demonstrates the effectiveness of the Aquamantys® System in limiting blood loss and reducing transfusions during spinal corrective surgery. Blood loss can present significant problems during or after spine surgery by increasing the need for transfusions, which have been shown to increase surgical complications and adverse events for patients.