Abstract: A medical lift-assistance device includes a bracket, a variable assist mechanism, a lifting arm, and a pad sub-assembly. The variable assist mechanism has a strut attached to the bracket and a height-adjustment feature including a lower end, an upper end, and an attachment location between the lower end and the upper end. Here, the distal end of the strut is attached to the height-adjustment feature at the attachment location. The variable assist mechanism also includes a first gear, a first axle, a first rotational axis extending along the first axle, and a first rotational direction. The first gear is rotatably attached to the first axle. The variable assist mechanism also includes a second gear, a second axle, a second rotational axis extending along the second axle, and a second rotational direction. Here, the second gear is rotatably attached to the second axle and engages the first gear.

Abstract: A medical procedure facilitation system for use with an operating platform. The medical procedure facilitation system has a pair of assisting arms and lifting arms secured to the operating platform that may swing along a path of rotation. A chain and sprocket mechanism connects the lower end regions of the assisting and lifting arms for communicating a lifting force from the patient to supporting thigh pads that raise a patient's legs.

Abstract: A medical procedure facilitation system for use with a bed. The system has a pair of assist arms secured to the bed that may rotate in relation to the bed along a path of rotation. A spring assembly is connected to the assist arms for helping raise a patient's legs. Supportive thigh pads associated with the assist arms give support under the knees and thighs and adjust their angle to accommodate the size and position of the patient. Hand grips are mounted on the support arms that allow the patient to contribute to lifting forces.