Patent ID: 8621689
Filing Date: 2014-01-07
Classification: A61B

Abstract:
1. An apparatus for driving and supporting cradle, the apparatus comprising: a table base; a cradle movable on the table base, said cradle comprising an intermediate cradle moveable relative to the table base and an upper cradle moveable relative to the intermediate cradle; wherein the table base is coupled to the intermediate cradle using a first rack and gear structure comprising a first rack fixed on said upper cradle and a first gear fixed on said intermediate cradle, wherein the first rack is engaged with the first gear on the intermediate cradle, the first gear configured to rotate and drive the upper cradle to move using the first rack when the intermediate cradle moves, and wherein the intermediate cradle is coupled to the upper cradle using a second rack and gear structure comprising a second gear fixed on said intermediate cradle and a second rack fixed on the table base, wherein the second rack is engaged with the second gear on the intermediate cradle, a movement of the intermediate cradle drives the second gear to rotate and move relative to the table base; and wherein the first and second gears on said intermediate cradle are located at respective first and second sides of the intermediate cradle, wherein the first and second gears each comprise a coaxial pulley, the two pulleys linked using a belt, links the two pulleys, the pulleys configured to drive the first and second gears, and wherein the first and gears and the first and second racks configured to drive the upper cradle and the intermediate cradle to move in a same direction.