US 7,055,195 B2 · Patient bed with CPR system

Abstract

An electrically activated emergency system for a patient bed comprises: an electrically powered linear actuator for driving a back rest of the patient bed from a lowered back rest position to a raised back rest position and operable to permit the back rest to lower from the raised back rest position to the lowered back rest position without being driven by the linear actuator; and, an independent emergency back rest lowering feature comprising an electrical activation means for activating the linear actuator to permit the back rest to lower from the raised back rest position to the lowered back rest position without being driven by the linear actuator, the electrical activation means not requiring continued operator attendance for continued lowering of the back rest. The present invention permits an attendant, for example a nurse, to press a single button to bring the back rest to a lowered back rest position without having to keep the button pressed so that the attendant is free to immediately begin administering emergency procedures while the back rest is lowering.

Claims12

Dependent claims

An emergency system for a patient bed comprising:

(a) an electrically powered linear actuator operable to drive a back rest of the patient bed from a lowered back rest position to a raised back rest position, and operable to permit the back rest to lower from the raised back rest position to the lowered back rest position without being driven by the linear actuator, the linear actuator comprising a lead screw operable for driving a piston rod to raise the back rest when the lead screw operates in an extending direction and further comprising a disengaging element having a spline to permit disengagement of the piston rod from the lead screw when the lead screw operates in a retracting direction;
and
(b) an independent electrical activation means for activating the linear actuator to permit the back rest to lower from the raised back rest position to the lowered back rest position without being driven by the linear actuator, the electrical activation means not requiring continued operator attendance for continued lowering of the back rest.

An emergency cardiopulmonary resuscitation system for a patient bed comprising:

(a) an electrically powered linear actuator comprising a lead screw operable for driving a piston rod to raise a back rest when the lead screw operates in an extending direction, and further comprising a spline to permit disengagement of the piston rod from the lead screw when the lead screw operates in a retracting direction to permit the back rest to lower from a raised hack rest position to a lowered back rest position without being driven by the linear actuator;
and,
(b) an independent electrical activation means comprising a switch, whereby triggering the switch activates the linear actuator to operate in the retracting direction, and further comprising a timer for continuing to provide a signal so that the linear actuator is powered for at least a maximum time required for the back rest to achieve the lowered back rest position to thereby permit continued lowering of the back rest without requiring continued operator attendance to the activation means, the electrical activation means further activating a second electrically powered linear actuator to permit a knee rest to lower from a raised knee rest position to a lowered knee rest position without being driven by the second linear actuator, the electrical activation means not requiring continued operator attendance for continued lowering of the knee rest.

Dependencies are inferred from the claim text.

Patient bed with CPR system

Life of this patent

Patient bed with CPR system

Life of this patent

Abstract

Claims12