FIELD: medicine.
SUBSTANCE: invention relates to medicine, namely to maxillofacial surgery. Exoskeleton of the lower jaw contains a device for closed, extra-osseous osteosynthesis of the lower jaw, including the repositioning nodes, mounted with the ability to move minifixers with spokes fixed in the bone fragments, fixing nuts, device for fixing the device on the head and mandibular arch. Device for fixing the device on the head is connected by means of removable elastic rods with the adaptation of closed extra-osteosynthesis and with the mandibular arch, fixed by a detachable connection on the adaptation of closed out-of-focus osteosynthesis, consisting of two reponating blocks, made in the form of threaded rods with brackets at the ends for connection, and connected by one end to form a hinge unit, wherein the other end of one reponating unit is connected to form a hinge assembly with a minifixer fixed relative to one fragment, and the other end of the other reponating unit is connected to form a hinge assembly with a minifixer fixed relative to the other fragment. Minifixers are additionally connected to each other by a fixing unit made in the form of a threaded rod with brackets at the ends for connection, and mandibular arch has the shape of a U-shaped plate whose upper surface in the middle is provided with a chin rest, one end of the plate is provided with holes for mounting a detachable connection, and the other end for interaction with the lateral surface of the lower jaw has a wall, the outer surface of which is provided with an element for fixing the elastic rods.
EFFECT: invention ensures accuracy of repositioning of fragments of the lower jaw in the horizontal, frontal and sagittal planes, better fixation of fragments of the lower jaw in the given position with the possibility of maintaining the mobility of the lower jaw for the entire period of treatment, as well as promoting the restoration of the function of chewing muscles and allowing to shorten the duration of treatment.
8 cl, 5 dwg
