The support bar (230) has bar sections (231) forming the center part of the support bar (230) and extending along the axis of the support bar (230).

A support bar (21) is attached under an RM holder (15b).

The support beam structure (4) is detachably connected to the drive support element (3) for forming a connection between the drive support element (3) and the support beam structure (4).

The invention further relates to a support bar (1).

The support rod can also be pivotable about an abduction axis with an abduction locking cylinder operably attached to the support rod.

A pivot carriage is mounted on the pivot carriage support bar for rotation about a roll-axis defined by the pivot carriage support bar.

A sliding sleeve (4) on the upper end of the supporting rod (3) moves along the cross rod (11), so that the supporting rod (3) supports the table leg (21), thus the table leg (21) is upright.

A support rod (56) provides support for the head (40) when extended.

The upper end of the supporting rod (3) is slidely disposed on the cross rod (11), and the lower end of the supporting rod (3) is pivotally connected to the table leg (21).

The upper end of the supporting rod (3) is pivotally connected to the cross rod (11), and the lower end of the supporting rod (3) is slidely disposed on the table leg (21).

A supporting rod (3) is disposed between each table leg (21) and its adjacent cross rod (11).

A supporting rod (3) is disposed between each table leg (21) and its adjacent cross rod (11).

The supporting component (1) is provided on a supporting rod thereof with a groove (4a).

Each support bar (600) is preferably integral with the bearing support (580).

Said aim is achieved, whereby the first and the second hanger arms (2, 3) may be extended over the shoulder region (4) by means of a first support bar (10) for the first hanger arm (2) and a second support bar (11) for the second hanger arm (3).