Clamp device, orthopaedics (1), can take at least two positions, i.e. resting guard and latched position, including two clips (2a, 2b), the two clips are installed by the way that elastic device is opposite, and according to axis, through hole is kept by anchorage bar, and each clip through hole. Clamper (2A) 2b) it is made of sheet body, sheet body includes (4b) and internal clamp port (4a) outside jaw, the jaw is connected by connection wall (5), define the opening for being intended to that reinforcing rod or pin are received by insert, the opening is towards the internal stretch of jaw (2a, 2b) to connection wall. (5) towards channel and hinged region, which is characterized in that in resting position, the jaw portion fixed from outside (4b), and endognath (4a) inwards moves, i.e., towards elastic device.