ATS Medical, Inc. (ATS) is engaged in the development, manufacturing and marketing of products and services used for cardiac surgeries. The company offers medical devices for the treatment of structural heart disease focusing on heart valve therapy and devices for the surgical treatment of cardiac arrhythmia. Heart valve therapy devices are sub categorized into mechanical and tissue heart valves and heart valve repair products. Additionally, the surgical arrhythmia therapy products consist of cryotherapy products for the ablation of cardiac arrhythmias. ATS operates in the US, Germany, Austria, France and China. ATSis headquartered in Minnesota, the US.