Apparatus for holding articulative structure

PURPOSE: A device for fixing a joint structure is provided to move a link around each end portion relatively and freely as a connection portion of a position guide and a connection portion of the slider receive a corresponding end portion of the link. CONSTITUTION: A device for fixing a joint structure comprises a position guide(110), three or more sliders(120), locking members(122,124), and three links(126). The locking members lock the three or more sliders respectively. The each of the three or more sliders can be slid along corresponding rail. The locking members include a concavo-convex structure for locking the each sliding of the three or more sliders.