Patient support apparatus

A wheel assembly connectable to a base of a patient support apparatus having a plurality of casters, said wheel assembly comprising:

• a fixed portion securable to the base;
• a pivoting portion pivotally attached to the fixed portion;
• a wheel operatively connected to the pivoting portion, the wheel being movable between a first deployed position when the pivoting portion is pivoted in a first direction and a second retracted position when the pivoting portion is pivoted in a second opposed direction;
• a spring assembly mounted between the fixed portion and the pivoting portion for urging the pivoting portion in the first direction, urging the wheel in the first deployed position;
• and
• an actuator operatively coupled to the fixed portion and to the pivoting portion, the actuator being actuatable between an actuator retracted position and an actuator extended position, the actuator being actuated to the actuator extended position to urge the pivoting portion in the second direction against an action of the spring assembly to thereby raise the wheel in the second retracted position, wherein the actuator allows the action of the spring assembly to urge the pivoting portion in the first direction.