Devices, systems and methods for distraction osteogenesis

A distraction device for bone tensioning, the distraction device comprising:

• (i) a main body comprising:
• at least one adaptor member having at least one connection platform;
• a strings positioning member attachable to the at least one adaptor member and extending along a longitudinal direction substantially perpendicular to a vertical axis of the at least one adaptor member, the strings positioning member comprising a plurality of positioning features, spaced from each other along the longitudinal direction;
• and
• (ii) a plurality of string pull assemblies, each comprising:
• a string having a first string end and a second string end, the second string end attached to a string engagement portion;
• and
• a movable element attached to the first string end, configured to move so as to promote displacement of the string engagement portion in a distal direction,
• wherein each of the plurality of string pull assemblies is attached to the main body;
• wherein each string of the plurality of string pull assemblies is configured to extend through or along a corresponding, different, positioning feature of the plurality of positioning features;
• and
• wherein each movable element of the plurality of string pull assemblies is independently movable to pull the string of the plurality of string pull assemblies attached thereto.