BRAKE RELEASE MECHANISM FOR SURGICAL TABLE

摘要

A surgical patient support includes a foundation frame, a support top, and a brake system. The foundation frame includes a first column and a second column The support top is coupled to the first column and the second column for rotation about a top axis extending along the length of the support top.

主权项

1. A patient support apparatus comprising
a caster including a stem, a wheel coupled to the stem to rotate about an wheel axis relative to the stem, and a braking element movable from a disengaged position allowing rotation of the wheel relative to the stem to an engaged position blocking the wheel from rotation relative to the stem, a brake drive including a mount and a linear actuator coupled to the mount, the linear actuator configured to move from a retracted position to an extended position relative to the mount, and a linkage including a shaft coupled to the braking element to move the braking element between the disengaged and the engaged positions and coupled to the linear actuator to be moved by the linear actuator relative to the mount, a release assembly coupled between the shaft and the linear actuator to selectively couple the shaft to the linear actuator, a disengaging-bias spring coupled to the shaft to move the shaft so that the braking element is moved from the engaged position to the disengaged position when the shaft is decoupled from the linear actuator, and a locator spring coupled to the shaft to resist the disengaging-bias spring so that the shaft moves to a preselected position when decoupled from the linear actuator.