| 摘要 |
The invention relates to an extension arm (1), especially a pivotal and adjustable-tilt extension arm for a supporting system, for the suspended fixing of preferably medial devices (2-5) by means of a joining element (6-9) fastened to a fixing piece (17) of the extension arm (1). Said extension arm comprises a securing element (34), which is guided through an opening (35) of the fixing piece (17) and secures the fastening of the joining element (6-9) to the fixing piece (17) by engaging inside a groove (36) of the joining element (6-9). The extension arm also comprises a securing bush (26), which at least partially surrounds the fixing piece (17) and the joining element (6-9) and which secures the securing element (34). To this end, a spring element (40) is provided, which is at least partially supported on the securing bush (26) in order to hold the securing element (34) in the groove (36) of the joining element (6-9) using pretension force. |
