Abstract: A drive of a compression-distraction apparatus, comprising a lead screw whose thread is mated with an opening of a ratchet wheel placed in a housing, a pawl interacting with teeth of the wheel and connected to a load-bearing element manufactured from an alloy possessing plastic memory. The load-bearing element has a rectilinear shape and is essentially a tie-rod whose one end is rigidly secured to the housing while the other end is coupled to a resilient member and the pawl, said load-bearing element being further provided with an electric heater connected to the housing.
Type:
Grant
Filed:
September 18, 1985
Date of Patent:
October 7, 1986
Assignee:
Kurgansky Nauchno-Issledovatelsky Institut Experimentalnoi I Klinicheskoi Ortopedii I Travmatologii
Inventors:
Gavriil A. Ilizarov, Alexandr P. Predein, Vyacheslav M. Bykov