Patent ID: 8844077

Claim:
A patient elevation and positioning apparatus for positioning a patient in a prone position on a patient positioning support system for a medical procedure, the patient positioning support system including a base with spaced head-end and foot-end support subassemblies, a patient support structure removably attached to and supported by the support subassemblies, and a rotation mechanism for rotating the patient support structure about a longitudinally extending roll axis a distance of up to at least 180°, the patient elevation and positioning apparatus comprising: a) a transfer table structure having head and foot ends, the transfer table structure being sized and shaped for receiving and supporting a patient thereon; b) a head-end lift subassembly removably attachable to both the head-end support subassembly and the transfer table structure head end, the head-end lift subassembly being adapted for moving the transfer table structure head end in a direction selected from toward and away from the roll axis; c) a foot-end lift subassembly removably attachable to both the foot-end support subassembly and the transfer table structure foot end, the foot-end lift subassembly being adapted for moving the transfer table structure foot end in a direction selected from toward and away from the roll axis; and d) an actuator for synchronously actuating the head-end and foot-end lift subassemblies, so as to maintain the transfer table structure in a plane substantially parallel to the roll axis while moving the transfer table structure in a direction selected from toward and away from the roll axis.