**2. Enclose technique**

Proximal anastomosis auxiliary device was introduced to resolve the disadvantage of side wall clamping [13]. These devices were designed to avoid clamping the lateral wall of the aorta and to reduce complications of the ascending aorta and the nervous system. For patients undergoing CABG, OPCABG is recommended to reduce the risk of cerebral complications caused by side wall clamping. Selective use of Enclose proximal anastomotic device in patients with severe ascending aorta atherosclerosis will be discussed in this section.
