Patent ID: 7533429
Filing Date: 2009-05-19
Classification: A61B,A61G,G01G,Y10T

Abstract:
1. A patient support apparatus comprising a frame including a first frame supported by a floor, a second frame situated above the first frame, a first pair of lift arms, and a second pair of lift arms, the first and second pairs of lift arms supporting the second frame relative to the first frame and movable to raise and lower the second frame relative to the first frame, and at least one actuator operable to move the lift arms between a first position in which the first and second pairs of lift arms extend upwardly relative to the first frame and are inclined relative to the first and second frames to support the second frame in a raised position relative to the first frame, and the frame being configured so that during lowering of the second frame relative to the first frame, the first and second pairs of lift arms move into an orientation substantially parallel with the first and second frames, each of the first and second pair of lift arms has a first end and a second end, the first ends pivot about respective first pivot axes that remain at substantially fixed positions relative to the second frame as the second frame raises and lowers relative to the first frame, and at least one of the second ends of the first and second pairs of lift arms translates along the first frame as the second frame raises and lowers.