COMPRESSION-DESTRACTIVE APPARATUS Russian patent published in 2009 - IPC A61B17/66 

FIELD: medicine.

SUBSTANCE: invention pertains to medicine, in particular to traumatology and orthopedics. Compression-destructive apparatus contains supports in the form of coaxially arranged dismountable against each other rings, one whereof is internal with threaded crown on the external butt end, the other - external with eyes having openings, threaded rods, reposition nodes, bone fixators, stopping element and fastening elements in the form of discs, nuts, and fastening screws. External ring is made with a slot for the threaded crown along the inner butt. Minimum one of the openings in the eyes mates with the slot along the outer butt and is intended for the stopping element. Inner rings consists of sectors, the latter are equipped with mating slot and holed ledge on the ends. The above mentioned inner rings consist of sectors with L-shaped bent ends, the latter are made with mating rectangular slot on the outer surface, cutting for the threaded hub - on the inner side, coaxial with the opening of the hub groove - on the end. Sector ends of the outer ring are connected with installed thereon fixing clip with ledges on its ends, corresponding to the grooves on the outer surface of the L-shaped bending of the ends of sectors of external rings, and made on internal surface of the butt groove for fixing screw, having in the base of the head circulating slot. Threaded rods in pairs are hinged on mating with reposition nodes of the parallel rods and are placed in cases, with a lateral slot for a screw nut on one of the ends, and threaded opening for mating with the screw nut stopping screw, and with the other end rigidly fixed in the openings of the eyes of external rings. Every reposition node is made as a L-shaped slide bar cut for the threaded rod, frame whereof has ledges for rectangular slots on external surface of the ends of sectors of external rings and an opening for the stopping screw - in the basement, as well as a groove for the fastening screw with circulating slot on its leg - on the butt surface of the basement. Stopping element is made as a screw with a bearing area in the basement of the head and arranged along the perimetre of the leg threads for installation of the mentioned opening of the eyes, connected with the slot, ensuring mating threads of the crown, and a flanged disc along the perimetre of the opening of the disc.

EFFECT: simplified use of the apparatus and widened functional possibilities of treatment of patients with shortened segments of extremities, combined with their multi-component deformation.

5 cl, 10 dwg