| 摘要 |
The invention relates to a jointed support structure, in particular for t he adjustable attachment of objects, such as medical instruments, to a support, such as a surgical operating table, comprising at least one clamping element having a movable clamping jaw; at least one elongate connecting element connected at one end to the clamping element and preferably made as a tube; an actuating block connected to the other end of the connecting element; at least one push rod extending at least substantially parallel to the connecting element and connecting the clamping jaw and the actuating block in a thrust transmitting manner; a movement generating device generating a movement extending at least substantially perpendicular to the push rod; and a transmission mechanism which guides the motion generated by the movement generating device while preferably deflecting it through 90.degree. to the push rod, whereby the clamping jaw can be brought alternately into and out of clamping engagement. The transmission mechanism comprises a toggle lever mechanism having first and second toggle levers connected at a joint movable by the movement generating device to move the toggle levers and the push rod to effect clamping of the clamping jaw. |
