SU1424825A1 - Arrangement for correcting the spinal column bend - Google Patents

Abstract

The invention relates to medical technology, to devices for the surgical treatment of scoliosis. The purpose of the invention is to ensure unimpeded growth of the spine under the action of a correcting force by ensuring the unimpeded movement of the ends of the elastic plate relative to the spine during its growth. The device comprises an elastic plate bent in two perpendicular planes with a figured protrusion and fixing elements. The plate is made of two parts, interconnected by figured protrusions with the formation of a polyhedron in the connection zone, with which the clamping strips of the fixing elements interact. The fastening is carried out at the middle of the plate. 6 Il.

Description

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The invention relates to a medical technique, namely to a device for the surgical treatment of scoliosis.

The aim of the invention is to ensure the growth of the spinal column under the action of a correcting force by ensuring the uninterrupted end of the elastic ends (the platelets relative to the spine to the procce of its growth.

  FIG. 1 and 2 are depicted in two projection devices for correcting the spinal curvature in a disassembled state without fixation elements; in fig. 3 - fixation elements; in fig. 4 and 5 - the device installed on the spine, 5 two projections; in fig. 6 - section A-A in FIG. five.

The device contains an elastic plate 1, (;; red1 part 2 which is made detachable in the longitudinal plane in the form of iJMHororpaiiHHKa, formed by two semi- |) connectors 1 and 3 and 4. Each half-connector is made in the form of cut along the axis of the cylindrical polyhedron The mic with the slots 5 and the slots 6, with which the pairs and protrusions of the second half connector, respectively, interact with each other when connecting. These protrusions and grooves provide for the convenience of connecting the plates between each other and ensure the separability of the connection in the same plane. On the part, the teeth of 7 are made by the hem of the half-heads, which do not make full contact of the polyhedron with bone formations and increase the reliability and rigidity of the attachment of the plate to the spine.

In addition, the device contains hooks of fixation in the form of hooks 8 and supports — ijoii: of the strap strip 9 with the clamping Brackets 10, having groove 1 under the multi-ilpaiiHHK. The ends 12 of the platinum I have an arcuate profile in function, corresponding to the configuration of the surface of the vertebrae in the contact zone. The plane of flattening of the end portions 13 of the elastic plate 1 perpendicular to the plane of flattening 14 is related to part 2. The number of sections of the plate with alternating seals with the required spacer can be increased.

Elasticity of the middle part of the plate, located in the front. The normal condition of the spine and acting on the spine in the sagittal plane is selected from the mustache. yuvi ensure the pressing of the end parts of the plate with effort. We exclude the raising of the ends above the spinous processes of the spinal cord and disrupting them from the ends of the curvature arc at the maximum bending around the body. The elasticity of the middle part is significantly less than the elasticity of the end parts and is several kilograms.

Mount e. Fixation elements with a polyhedron plate are provided with nuts 15. In order to eliminate metallosis, polyethylene tips can be installed on the free ends of the elastic sections. For this purpose, polyethylene m can be covered over the entire surface of the device parts except for teeth and threaded connections.

The device is installed as follows:

At the curvature vertex, one incision is made along the spinous processes for the length of the toothed support bar 9 (8-10 cm). Spinous processes and vertebral arches are exposed from soft tissues. It is performed between the vertebral arches adjacent to

the affected central vertebra from the concave side, two channels under the hooks 8.. Between the spinous processes lying above the central vertebra, a channel is made for the threaded rod of the toothed support rod 9. Alternate

0 hooks 8, pre-assembled with clamping brackets 10 by means of nuts 15, directed the insertion ends of the hooks under the bows in opposite directions from the central vertebra and have brackets 10

5 along the edge of the wound from the concave side. A plate 1 with a sharp end to the end of the curvature arc is led through the incision from the side of the concavity along the spinous processes, while the half-slot of the polyhedron is located in the section. Then the second is conducted.

0 part of the plate through a cut in the direction of the opposite end of the arc is curved-. The semi-plugs 3 and 4 of the plate are oriented with the planes of the connector towards each other, while the elastic ends interacting with the curvature are located in the sagittal plane. Connect the semi-connectors to each other by aligning the protrusions 5 with the grooves 6. The secondary clamp squeezes the semi-connectors until they are fully connected and, orienting to the desired axial position, fix the clamping brackets 10 of the hooks 8 formed in the connection polyhedron. 8. Support the toothed gear bar 9 with the clamp. 10, which also encompasses the surface of the polyhedron.

5 Sequentially tightening the nut 15 on the surface of the clamping brackets 10, tighten the plate to the curvature vertex. After a full tightening, the ends of the threaded rods protruding above the nuts are bitten by a nipper. The wound is tightly protected in layers ..

0 The placement of the fixation unit in the middle part and the implementation of a plate made of two parts ensures, when using the device, a convenient device; about carrying out and attaching the plates to the spine, the trauma of the operation is reduced by making a single incision in the affected area; The substantial movement of the free ends of the plate relative to the spine during its growth.

Claims (1)

Apparatus of the Invention A device for correcting spinal curvatures containing an elastic plate, the plane of flattening of the end parts of which is perpendicular to the plane of flattening of the middle part, and fixing elements, characterized in that, in order to ensure the growth of the spinal column under the effect of the correcting force, the middle part of the plate is made detachable in the longitudinal plane in the form of a polyhedron associated with fixation elements, with a groove for a polyhedron made in the fixation elements. 1G  6 / FIG. 2 9 L. /. Fi & FIG. five YU FIG. 6