SU1082413A1 - Arrangement for fixing wires to the ring of compression and distraction apparatus - Google Patents

Abstract

A device for fixing a knit to a ring of a compressor unit containing a body with a hook and needles for the knitting needle and a clamping screw, characterized in that, in order to increase the reliability of fixing the knitting needles and eliminate weakening of the tension, the clamping screw has a hole for the knitting needle and is installed in the case in which a longitudinal through slot is made before the intersection of the hole under the pressure screw.

Description

(Rig.G

The invention relates to medicine, in particular to traumatology and orthopedics, and improves the devices used in the application of external fixation devices.

A device for fixing the spokes to a ring of a compression-distraction apparatus is known, comprising a housing with a hook and holes for a needle and a clamping screw 1.

However, after securing the clamp into the clamp, the tension force may drop, which reduces the stability of the fixation of the spokes.

The purpose of the invention is to increase the reliability of the fixation of the list and the elimination of the weakening of the loading force.

The goal is achieved by the fact that the device for fixing the spokes to the ring of the compression-distraction apparatus contains a housing with a hook and holes for the needle and a clamping screw, the latter has a hole for the needle and is installed in the housing in which the longitudinal slot is made the intersection of the hole under the presser screw.

FIG. 1 shows a device, a general view; in fig. 2 - the device case with a hook, three projections; in fig. 3 - device installation on the device.

The device includes a housing 1 with a hook 2 and a through slot 3, a hole 4 under the needle 5 and a hole 6 under the clamping screw 7, which is provided with a hole 8 under the needle 5 and a nut 9. Through the slot 3 is held along part of the hook 2 until it intersects 6 under the clamping screw 7. Through the slit 4 is made so that its smaller depth corresponds to the diameter of the spokes 5.

Assembled the centers of the housing 1 and the holes 4 and 8 under the needle 5 are located on the same axis. The clamping screw 7 is located on the inner side of the ring 10.

The compression-distraction apparatus (not shown) fastened through the bone fragments of the spokes 5 in the ring 9 is produced as follows.

Before installation on the ring 10 of the compression-distraction apparatus, the device is assembled. When this clamping screw 7 is installed in the corresponding hole 6 of the housing 1 so that the hole 8 under the needle 5 coincides with the hole 4 under the needle 5 of the housing 1, forming a single channel. The needle 5 is guided through the holes 4 and 8 into the slot 3 and secured by screwing onto the clamping screw 7

nuts 9. Hook 2 put on top of the ring 10 (Fig. 3). The second end of the needles 5 is guided into a similarly prepared body 1 symmetrically mounted on the ring 10 without first securing the spokes 5 with a pressure screw 7. In FIG. 3 the initial position of the housing 1 is shown by a dotted line. The gauge 11 (shown by arrows, the initial position of the gauge gauge is also indicated by the dotted line) pulls the needle 5 to the desired degree of tension recorded by special electronic sensors (not shown). The needle 5 moves in the slot 3 of the housing 1 and occupies the position reflected in FIG. 3 on the left is a solid line. In this position, it is fixed by twisting the nut 9 on the clamping screw 7.

The stiffness of fixation of the spokes 5 is achieved mainly due to the deformation of the spokes followed by jamming in slot 3 of the housing 1.

Q When the apparatus is removed, the end of the knitting needle 5 through the limb, as a rule, is bitten off, the body 1 with hook 2 is removed from the ring 10, unscrew the nut, the free end of the needle is removed and the clamping screw 7 is removed.

5 Thus, using the proposed device, convenient and reliable fixation of the spokes is carried out, which does not require additional effort and skills from the staff, ensuring that the central position of the spokes in the ring remains

 the period of treatment and, as a result, the elimination of scrolling and falling of the tension force of the spokes after fixing.

FIG 2

FIG. 3

Claims (1)

DEVICE FOR FIXING SPOKES TO THE RING OF A COMPRESSION DISTRACTION DEVICE, comprising a housing with a hook and holes for a spoke and a clamping screw, characterized in that, in order to increase the reliability of fixing the knitting needles and to prevent the tension from being weakened, the clamping screw has a hole for the knitting needle and is installed in the housing in which made a longitudinal through slot to the intersection of the hole for the clamping screw. figure 1