SU1225556A1 - Arrangement for detorsion of bones - Google Patents

Description

The invention relates to medicine, and to traumatology.

The aim of the invention is to reduce the trauma of soft tissues.

FIG. 1 shows a device for bone detoria j; a general view; on fng „2 - section aa in fig, 1; Fig, 3 - the bent end of the plates; in fig. 4 - section BB in Fig „1; in fig. 5 - section bb in FIG. 1; in FIG. 6, a cross-section of the HG in FIG. one.

Device for / bone detoria made in the form of a spiral

around the longitudinal axis of the plate l, at one end 2 of which are located the ends -cHbie holes 3 for mounting screws 4 (FIG. 2). The second end 5 of the plate 1 is made to bend in the plane of the plates and has at least two oval conical grooves 6 and 7 for screws 8, spaced at different distances from the axis of the plate 1 (D, and D, respectively), the longitudinal axes of the slots 6 and 7 parallel to the axis of the device, and the taper is directed opposite to the taper of the holes 3, the angle of the spiral twist in the initial position the end 5 in the place of execution of the oval conical groove 7 revshaet helical twist angle end 5 of the target site oval cone

groove 6 (jJ)

The device is applied as follows.

A section of soft tissues 5–6 cm long exposes the region of the greater trochanter. The plates 1 are bent with the end 5 (Fig. 1), from the intertrochanter region, under the muscles through the periosteum to the level of the lower third of the thigh, orienting by palpation along the axis of the femur. Make a soft tissue incision in the lower third of the thigh 3-4 cm long, exposing the bent end 5 of the device

va. Then place the plate G strictly along the axis of the femur and screws 4 through the opening 3 and fix the end of 2 plates 1 to the spit of the femur. After that, the bent end 5 of the plates 1 is fastened. First, a hole is drilled in the bone by means of the groove 6 of plate I and screw 8 is screwed into this hole. At the same time, by having arm D :, (Fig. 1) between the axis of plates 1 (or the point of contact of the plate 1 of the bone) and the place of application of force from the screw 8 in the plate 1 a twisting moment occurs, which increases with the screw depth of the screw 8 (Fig. 5). With a sufficient degree of screw 8 in the bone, it becomes possible to prepare a threaded hole into the bone through the following d The distance from the axis of the plates 1 is smaller than the grooves 6 and 7, and screw 8 is also screwed into it. which, if desired, in order to increase the twisting force of the plates 1, can be twisted against the stop (for example, a close position to the maximum twist of the plates 1 is shown in Fig. 5 with a thin line). If there are more holes in the bent end of the plates 1, screws 8 are successively screwed through each hole, thereby increasing the force in plate 1. At the same time, screws 8 in the holes most closely spaced to the axis

devices are somewhat loosened. After installing the device on the bone, both incisions are sutured in layers.

Thus, the surgeon, when attached to the bone, has the ability to adjust the force applied to the bone to straighten it, directly when attaching the device.

Figg

6-6

1 V

FIG.

Phage.

in-in

Editor C, Patrusheva

Compiled by R. Kovsk cows Tehred M. Morgental Corrector T. Kolbe

Order 2669 Circulation 660 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d.

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

DEVICE FOR BONE DETECTION, containing a spring rod having screw holes at the ends, characterized in that, in order to reduce trauma to soft tissues, the rod is made in the form of a plate spirally curved around the longitudinal axis of the plate with an oval and curved end cone holes.