push button casing 78 once spaced teeth 70 have reached above grooves 80 the teeth 70 will lock into spaced locking ridges 76 and will hold inner push rod 62 up compressing the outer cuff spaced locking ridges 76 define grooves 80 this is the closed position of sphincter 12 when outer push rod 52 is pushed again it pushes the rotating locker 66 and rotates it so that the grooves 80 and spaced rotating locker teeth 70 align and the spaced locker teeth 70 slide outward in the grooves 80 under spring pressure and the rotating locker 66 moves down downward movement is aided by inner push rod coil spring 64 and rotating locker coil spring 74 the pressure from inner push rod 62 on the outer cuff 14 is released opening up the sphincter see fig6 the teeth 83 on outer push rod 84 and the teeth on rotating locker intermediate wall 69 engage in such a way that when they are engaged as a result of each push of push button 42 and outer push rod 84 the rotating locker 66 is turned counter clockwise a discrete distance thereby at one turn aligning spaced locker teeth 70 and grooves 80 between ridges 76 and on the next turn placing spaced locker teeth 70 on ridges 76 thereby alternately locking and unlocking the.