Methods Occlusion of the openings of main artery and side artery was performed through double-channeled air pocket tube,with normothermia,normal flowing rate and heart beating.

• 方法采用经肺动脉双腔气囊导管封堵主动脉侧动脉导管开口，常温、常规流量，心脏不停跳缝闭动脉导管开口。