SK62294A3 - Device for reposition of bone fragments - Google Patents

Abstract

A device for the repositioning of bone fragments formed by the base a beam (5) attached to the limb and guarded the eye (8) in which the repositioning body is stored (11) with a thread (12) for the repositioning nut (13) connected by means of a bone splice positioning joint (14).

Description

The present invention relates to a device for the reduction of bone fragments for external bone fixation, wherein the bone fragments or fragments have been removed from their place upon or after the fractured bone and must be repositioned to achieve proper bone growth.

BACKGROUND OF THE INVENTION

Until now, an external fixation or fixation bandage is often used in a fracture of a limb, but there is very little possibility of repositioning bone fragments removed from their place. Especially smaller bone fragments are virtually impossible to repose other than surgical, so-called. bloody internal miniosteosynthesis. This creates difficulties for the patient, for the medical and nursing staff, and increases treatment costs.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are practically completely eliminated by the bone fragment reduction device according to the invention, which is characterized in that the limb is attached to the limb by a threaded body and connected by means of a positioning connection to the bone fragment.

The bone fragment reduction device according to the invention makes it possible to obtain the necessary fragment position correction by gradual external action, while achieving perfect stabilization of the fixation with sufficient compression

-2-fraction or debris for good growth. Reoperation after the growth is not necessary, the joint used for fixation of the fragment can be removed outpatiently. Thus, both a reduction in patient inconvenience and a reduction in the need for medical intervention and overall treatment costs are achieved.

From a practical point of view, it is advantageous if a reposition nut is mounted on the thread of the repositioning body.

For the use of the device on the external fixator, it is advantageous that its base beam is attached to the external fixator by means of at least one clamp and that a sleeve provided with an eye for the repositioning body is placed thereon.

From a functional point of view, it is advantageous if the clamp is in the form of a yoke with a clamp screw.

From a functional point of view, it is also advantageous for the clamping sleeve to be attached to the base beam by means of a clamping screw on the base beam.

For ease of operation during repositioning, it is then advantageous for the eye to be fastened in the clamp sleeve by means of its bed and fastened in the clamp sleeve by a connection.

For an advantageous attachment to the bone fragment, the positioning joint is formed by a wire drawn through the bone fragment and provided with a pulling grip of the fragment.

From the viewpoint of ease of carrying out the reduction, it is then advantageous for the wire to be guided through the axial opening through which the reduction body is provided and to be fastened to the collet of the reposition body by means of a collet screw.

Overview of the figures in the drawing

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail with reference to the drawing in which: FIG. 1 shows a front view of the device, FIG. 2 is a view P of FIG. 1 in a partial section through the apparatus, FIG. 3 shows the device in use on a fixative bandage, and FIG. 4 shows the device in use on an external fixator.

Exemplary embodiments of the invention

The clamp sleeve 6 is the clamp sleeve 6

The device is attached to the limb, either directly or by means of an external fixator 1 (see Fig. 1,4) of a suitable type, which may be e.g. Ilizars, or other fixation can be used, e.g. a fixative bandage 23 (see FIG. 3). The attachment of the outer fixator 1 is provided by one or preferably a plurality of suitable clamps 2, e.g. In the form of a yoke 2 ^{with a} clamping screw 4. The device itself comprises a base beam 5 (see FIG. 1) fixed to the clamping bracket 2 and the clamp 2, respectively. A clamping sleeve 6 (see FIG. 2) is attached to the base beam 5 (see FIG. 2), e.g. using the tightening screw 7.

provided with an eye 8 mounted in its seat 9 and fastened to it by means of a joint 10, preferably a clamping screw. A repositioning body 11 is inserted into the eye 8. This is provided with a thread 12 on which the repositioning nut 13 is screwed onto the eye 8. The repositioning body 11 is connected by a positioning joint 14, e.g. wire 15 with bone fragment 16 (see Fig. 3,4) of bone 17. This connection, if it is a traction joint, is preferably made by means of a hole 18 drilled into the bone fragment directly by the wire 15 through this hole 18. The wire 15 is provided with a suitable tension clamp. 19, e.g. attached thereto, by bending the wire 15, or the pull tab 19 is otherwise designed, e.g. as a loop, etc. However, the connection of the repositioning body 11 to the fragment 16 can also be made differently, e.g. it may be pushed (not shown). If the positioning joint 14 is tensile and is in the form of a wire 15, it is preferably connected to the repositioning body 11 so that it is provided with an axial bore 20 (see FIG. 2) through which the wire 15 is pulled and fixed in the collet 21 of the repositioning body. 11 by means of a collet screw 22. When fastened

In the base beam 5 to the fixing bandage 23 (see FIG. 3), the eye 18 is attached directly to the base beam 5 and the reposition body 11 with the reposition nut 13 is housed therein. preferably in this case the collet screw 22 is provided with a compression fixation nut 24 to ensure compression of the fragment

16. When the base beam 5 is attached to the external fixator 1 according to FIG. 4, the eye 8 can also be attached directly to the base beam 5.

The reduction is done by positioning the connection 14 with the fragment 16 and, when connected to the repositioning body 11, the fragment 16 is gradually brought to its correct position. It is important that it is possible to exert the necessary pressure to ensure correct growth while limb fixation. By means of the device according to the invention, it is possible to perform the reduction and fixation by tension and compression.

Industrial usability

The bone fragment repositioning device according to the invention can be used wherever it is possible to reposition and fix bone fragments with its help.

Claims (8)

PATENT CLAIMS A device for reducing bone fragments, characterized in that a base beam (5) is attached to the limb for the body (11) provided with a thread (12) and connected by means of a positioning joint (14) to the bone fragment. Device according to claim 1, characterized in that a repositioning nut (13) is mounted on the thread (12) of the repositioning body (11). Device according to claim 1, characterized in that the base beam (5) is attached to the outer fixator (1) by means of at least one clamp (2) and is provided with a clamping sleeve (6) provided with an eye (8) for repositioning body (11). Device according to claim 3, characterized in that the clamp (2) is in the form of a yoke (3) with a clamp screw (4). «· Device according to claim 1, characterized in that a clamping sleeve (6) is attached to the clamping beam (5) by means of a clamping screw (7) on the base beam (5). Device according to claims 1 to 5, characterized in that in the clamping sleeve (6), an eye (8) is fastened in its clamping sleeve (6) in the clamping sleeve (6) by means of a connection (10). Device according to claim 1, characterized in that the positioning joint (14) is formed by a wire (15) - a bone fragment is pulled over and provided with a fragment pull tab (19). Device according to claims 17, characterized in that the wire (15) is guided through an axial bore (20) through which the reduction body (11) is provided and is fastened to the collet (21) of the reduction body (11) by means of a collet screw (22). ).