The invention provides a three-link-parallel-connection
external fixator for
tibia malformation correction. The three-link-parallel-connection
external fixator comprises a proximal ring, a distal ring, a proximal-ring connection base, hooke hinges, three adjustment
branch links, first adjustment assemblies, second adjustment assemblies, kirschner wires and
kirschner wire clamps. The proximal ringand the distal ring of the
external fixator are perpendicularly fixed to the deformed
tibia through the kirschner wires respectively. The adjustment
branch links are composed of the first adjustment assemblies and the second adjustment assemblies, and the first adjustment assemblies and the second adjustment assemblies are provided with adjustment nuts, the adjustment
branch links can be extendedor shortened by rotating the first adjustment nut and the second adjustment nut, the distal ring can conduct spatial 6-DOF movement relative to the proximal ring accordingly, and any-space three-dimensional bone malformation can be corrected. According to the three-link-parallel-connection external fixator, three-
link design is adopted to form a 3-PUPU parallel connection structure with 6-DOF, andthe three-link-parallel-connection external fixator has the advantages of being simple in structure, small in motion branch link number, large in
working space, convenient to operate and not prone tobranch link interference.