Abstract: A medical apparatus has a support mechanism for a treatment and/or examination subject having a support plate for the treatment and/or examination subject that is adjustable at a base and is radiation-transparent in at least one region. The support plate is seated so as to be height-adjustable at the base and adjustable around three spatial axes and is seated so as to be optionally displaceable in the longitudinal direction and/or the transverse direction in floating fashion, or displaceable by means of a connectable drive device.

Abstract: Operation-diagnosis apparatus having a bearing mechanism for a treatment and/or examination subject comprising a bearing plate for the treatment and/or examination subject that is adjustable at a base and is radiation-transparent in at least one region, whereby the bearing plate is seated height-adjustable at the base and adjustable around three spatial axes and is seated optionally displaceable in longitudinal and/or transverse direction in floating fashion or displaceable by means of a connectable drive device.

Abstract: In a coupling arrangement for a drive arrangement and an adjustable positioning plate of a medical system, the positioning plate is adjustable at least in the direction of its longitudinal axis via the drive arrangement as well as by hand. A friction connection between the drive arrangement and the positioning plate can be produced and cancelled via the coupling arrangement such that the positioning plate can be adjusted at least in the direction of its longitudinal axis via the drive arrangement given a friction connection, and by hand given a neutralized friction connection. The coupling arrangement acts directly between the drive arrangement and the positioning plate.