Abstract: A medical image scanning system includes a top plate on which an object is placed, a drive screw shaft, and a fall prevention unit. The fall prevention unit includes a load support nut that is threadedly engaged with the drive screw shaft and to which the load of the top plate is applied; a fall prevention nut that is arranged below the load support nut and is threadedly engaged with the drive screw shaft; a rotation prevention mechanism that prevents the rotation of the load support nut; and a detent mechanism that performs the turning stop of the fall prevention nut and releases the turning stop of the fall prevention nut when the threaded engagement between the drive screw shaft and the load support nut is disconnected.

Abstract: In order to more reliably prevent a runner from being disengaged from a rail during using of a fixation band, a subject fixing device of the present invention includes a runner includes a runner main body that is accommodated inside a rail, and a band connection portion that protrudes out of the rail and is connected to the fixation band, and a rail includes a rail main body that slidably holds the runner main body, and first and second attachment portions that protrude outwards from the rail main body, and are disposed with an end of the fixation base interposed therebetween so as to be attached to the fixation base, and in which the rail main body is provided with a slit which allows the band connection portion to pass therethrough, and prevents the runner main body from passing therethrough, along a longitudinal direction of the rail main body.

Abstract: A medical image scanning system includes a top plate on which an object is placed, a drive screw shaft, and a fall prevention unit. The fall prevention unit includes a load support nut that is threadedly engaged with the drive screw shaft and to which the load of the top plate is applied; a fall prevention nut that is arranged below the load support nut and is threadedly engaged with the drive screw shaft; a rotation prevention mechanism that prevents the rotation of the load support nut; and a detent mechanism that performs the turning stop of the fall prevention nut and releases the turning stop of the fall prevention nut when the threaded engagement between the drive screw shaft and the load support nut is disconnected.

Abstract: An object of the present invention is to provide a bed for a medical image scanning apparatus including a lateral movement device which is light and has less deformation while suppressing a bed height in the lowest position of a top board. A bed for a medical image scanning apparatus includes a base 8, an upper portion frame 2 that supports a top board 1, and a lifting and lowering device 40 that is positioned between the base 8 and the upper portion frame 2 and lifts and lowers the upper portion frame 2, and the lifting and lowering device 40 includes a lateral movement device (a motor 10, a pinion gear 12, and rack 23) which relatively moves at least two members (a rail receiving block 17 and a rotation axis 18, and a rail receiving block 15 and a rotation axis 20) constituting the lifting and lowering device 40 along a direction perpendicular to a longitudinal direction of the upper portion frame 2 in the top board surface of the top board.

Abstract: An object of the present invention is to provide a bed for a medical image scanning apparatus including a lateral movement device which is light and has less deformation while suppressing a bed height in the lowest position of a top board. A bed for a medical image scanning apparatus includes a base 8, an upper portion frame 2 that supports a top board 1, and a lifting and lowering device 40 that is positioned between the base 8 and the upper portion frame 2 and lifts and lowers the upper portion frame 2, and the lifting and lowering device 40 includes a lateral movement device (a motor 10, a pinion gear 12, and rack 23) which relatively moves at least two members (a rail receiving block 17 and a rotation axis 18, and a rail receiving block 15 and a rotation axis 20) constituting the lifting and lowering device 40 along a direction perpendicular to a longitudinal direction of the upper portion frame 2 in the top board surface of the top board.