CS209372B1 - Compression distraction device of external skeletal fixation - Google Patents

Abstract

The subject of the invention is a compression-distraction device for moving (i.e. lengthening or shortening) bones using external skeletal frame fixation. The compression-distraction device according to the invention consists of a screw with a gauge, which is provided with a fixing pin at one end and a sleeve with a clamping jaw, provided with a nut, is arranged at the other end. . . · The subject compression-distraction device is advantageously usable in conjunction with other elements for creating a rigid skeletal fixation in bone surgery.

Description

SUMMARY OF THE INVENTION The present invention provides an external skeletal fixation compression device for use in the treatment of open infected fractures and articular joints in the area of long bones, i.e. femur - femur - and tibia - tibia, possibly in the pelvis, including distraction.

To date, mainly gypsum external fixation has been used, which does not provide a good treatment option for open infected fractures and articular joints, and when used, it is not possible to shorten and lengthen the bones. In other cases, Judet's rigid ruler plate is used with fixed pitch holes, which considerably restrict the choice of location for insertion of surgical aids - screws or nails - due to the nature of the bone fracture. Other disadvantages are the possibility of compressing only the elasticity of the established surgical aids wrapped in a rubber bandage and the necessity of using special drill sleeves or templates for drilling holes in the plate and bone. Another known fixation element is telescopic fixators with fixed pitch apertures, which also limit the choice of location of insertion of surgical aids for different bone fracture patterns. The use of other known frame fixations is also contingent upon the use of drill sleeves or templates to accurately drill holes in the plate and bone. These fixations have the additional disadvantage that the displacement of the individual runners along the threaded rod leads to an uneven distribution of the compression of the bone portions and, moreover, a special target has to be used for drilling the holes. As a common shortcoming yet

Claims (2)

SUBJECT Compressive distraction device of external skeletal fixation, consisting of a screw with gauge, the screw being provided with fixation fixation used at one end, it is necessary to mention the impossibility of their use in skeletal fixation for single and multi-plane superstable fixation. The above-mentioned disadvantages of the prior art fixation methods are completely eliminated by the multipurpose fixation, the element of which is an external skeletal fixation compression-stripping device according to the invention, characterized in that a sleeve with a clamping jaw and an adjustment nut is provided on the rider. The advantage of the present compression distraction device is primarily that it is removable so that it reduces the weight of the assembly on the bone, while the value of the distance by which the bones are zoomed in or out can be monitored on the meter. An exemplary embodiment of a compression distraction device according to the invention is shown in the accompanying drawing, in FIG. 1 in plan view and in FIG. 2 in a partial axial longitudinal section. At one end of the screw 4 is provided a sleeve 1 with a clamping jaw 3, which is further provided with an adjusting nut 2. On the surface formed on the screw 4 is a gauge 6 and at the other end of the screw 4 a fixing pin 5 is fixed. In operation, the device is gripped by the fastening pin 5 in the corresponding hole of the fixation frame slider and the clamping jaw 3 is gripped directly onto the fixation frame. By moving the adjusting nut 2 in one direction or the other, the required compression or distraction is set according to the meter 6. The compression / shredder device according to the invention can advantageously be used in surgical procedures using external frame fixation. BACKGROUND OF THE INVENTION A pin and a slider at the other end, characterized in that a slider (1) with a clamping jaw (3) and an adjustment nut (2) is provided on the slider.