Abstract: A device used to introduce a cardioplegic solution into a coronary artery has an elongated tube and a pliable annular member mounted on the outlet end of the tube. The annular member is a cup-shaped pliable plastic member having an open end that is larger than the inlet arterial opening to the coronary artery. The open end of the cup-shaped member fits over inlet opening to direct the cardioplegic solution into the coronary artery.