DE3305597A1 - Straightening device for bone fractures - Google Patents

Abstract

The straightening device comprises two pairs of rails (1, 17) which extend parallel to one another at a distance and can be displaced relative to one another in the longitudinal direction in each case in a housing (6) by toothed means (22, 22a), and in each case the rails (1, 17) lying opposite one another receive transversely extending pins (4) in boreholes (2). Provided under the two housings (6) is a straightening ring (26) which has two rings made up in each case of two half-rings (11, 12/15, 16) which can be turned steplessly relative to one another and can be fixed in the respective turning position, so that the two upper rails (1) can be turned relative to the lower rails (17) transverse to their longitudinal direction. In addition, under each of the two housings (6), between the housing (6) and the straightening ring (26), there is a joint (25), such as a ball, universal or hinge joint, permitting a lateral swivelling of the upper rails (1) relative to the lower rails (17). In this way the straightening device can be displaced in three planes and can be used for straightening dislocated, twisted and greenstick bone fractures. <IMAGE>

Description

Dipl.-Ing. H. FRITZ Patent attorney Mumbai 74

576O Arnsberg 1

in. File: 83 / OO7
Date: O7.O2.1983

Mr. Wilhelm Schulüc, Auf der Hofestatt 21, 4760 Werl-Oberbergstraße

ⁿ straightener for broken bones "

The invention relates to a straightening device for bone fractures, which two in a housing via toothing means against each other in the longitudinal direction
has adjustable rails which receive pegs extending transversely to the longitudinal direction of the rails in bores so that they can be fixed.

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From DE-PS 2 437 752 such a straightening device "has become known, with the broken limbs on the human Body can be set up precisely by adjusting the length of the rails.

The invention is based on this patent specification the Aufgate based on creating an improved straightening device with which not only postponed, but also twisted and kinked bone broth in a simple manner can be set up precisely.

This object is achieved according to the invention by the characterizing Features of claim 1 solved, the design features listed in the sub-claims are still advantageous Present further training for the task solution.

The subject matter of the invention does not just extend to you Features of the individual claims, but also on their combination.

The straightening device according to the invention has rails which can be displaced in the longitudinal direction due to the connection of mutually opposite rails and that in itself in both directions in a plane transverse to Rail adjustment direction rotatable alignment ring a simple and precise setting up of displaced and twisted fractures created. The amount of twisting of the alignment ring can not be chosen arbitrarily and through Carry out and fix ring grooves and at least one pestle screw.

The alignment ring has two mutually rotatable rings, which are integrated into the two lower rails below the housing and through which the two upper rails can be rotated relative to the two lower rails.

83/007 330bo9 /

Furthermore, these two rings are advantageous in turn composed of two half-rings that put together allow directly on the broken limb.

By arranging a joint between the housings and the straightening ring, the straightening device is also adjustable in a third level and the upper rails can be tilted to the side with respect to the lower rails, so that the straightening device for the Use of kinked fractures can be used. The straightening device can be adjusted in three levels can be used in a variety of ways and despite its simple structure and easy handling it has one precise adjustment and thus a high practical value.

Leave the holes in the second pair of rails for the hail also drill yourself during the operation if it is not possible to stick the nails through so that the Holes in the rails are exactly at the same height *

The straightening device according to the invention is made up of a few, permanently durable and reliably acting individual parts together and can be produced in different sizes »

The idea of the invention relates once to the in two directions (by rails and alignment ring) and to second on the straightening device adjustable in three levels (by rails, straightening ring and joints), which is in both Designs can be produced.

85 / oo7

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With the aid of the drawings, an exemplary embodiment is shown below explained in more detail according to the invention. It shows:

Pig. 1 is a perspective view of a fracture straightening device with one against the other rotatable alignment ring and two arranged thereon, adjustable in the longitudinal direction against each other Pairs of rails,

Fig. 2 is a perspective view of an adjusting wheel,

Pig. 3 shows a view of the upper ring of the alignment ring in the direction of arrow III-III in Pig. 4 seen

Pig. 4 shows a front view in partial section of the alignment ring with rails extending therefrom;

Pig. 5 is a view of the lower ring of the alignment ring in the direction of the arrow V-V in Pig. 4 seen

Pig. 6 is a front view of the in a housing through Toothed means mutually displaceable rails, with the housing open,

Pig. 7 is a side view of the housing with rails according to Fig. 6,

Pig. 8 a front view of the straightening device with arranged between the straightening ring and the upper rails Joints,

83/007

Pig. 9 is a plan view of the straightening device in which the alignment ring surrounds a bone.

The straightening device according to the invention, for straightening bone fractures, in particular displaced, twisted and kinked bone fractures, has two pairs of splints 1.17 spaced apart, divided and with the two parallel opposite rails 1 or 17 of the two pairs of rails 1.17 can be continuously rotated against each other and in the set rotational position fixable (fixable) alignment ring 26. Each pair of rails has an upper rail 1 and a lower one Rail 17 and these two rails 1, 17 of each pair of rails can be adjusted relative to one another in the longitudinal direction (displaceable) · Mounted in a preferably flat housing 6.

These two rails 1.17 of each pair of rails run with their longitudinal direction and thus the direction of displacement transversely, preferably at right angles to the alignment ring 26 and its plane of rotation,

The length end regions bordering into the housing 6 the two rails 1.17 are each offset in the longitudinal direction gegeneinan the offset and with a rack-like Toothing 22a equipped with which it is in operative connection with a gear 22 rotatably mounted in the housing 6 stand so that when the gear 22 is rotated, the two rails 1.17 apart in the longitudinal direction or be pulled together - this shift of the two Rails 1.17 are limited in the longitudinal direction by their teeth 22a.

83/007

The rotation of the gear 22 takes place by hand by means of an adjusting wheel 9, which has a square receptacle 1o "owns and with this square holder 1o on one am Gear 22 protruding square 7 can be plugged. The housing 6 is closed on the outside by a cover 23 and through a recess 23a in the housing cover 23 the gear square 7 is accessible from the square receptacle 1o.

With 8 is a gripping through a longitudinal groove 24 in each housing 6 and screwed into a rail 1 pestle screw , preferably knurled screw, with which the shifted rails 1.17 against each other against unwanted further shifting can be set in the housing 6 - the longitudinal groove 24 can also be used to adjust the displacement size of the rails 1.17 be provided against each other, in which the Pestlestellscrew 8 on both sides hits against the futenden.

In the rails 1, 17 boreholes 2 arranged one above the other are provided in the longitudinal direction of the rails, are plugged through the cart 4, which then each two opposite rails 1 and 17 respectively, connectan ^ dl.h ,, the transverse nails 4 are inserted through the in the same altitude lying and parallel rails 1 and 17 inserted and are used for Straightening of the bone 27 lying between the splints 1.17. The stuck-through Mgel 4 are pushed through into the Rails 1.17 screwed in locking screws 5 »preferably Knurled screws, fixed.

The alignment ring 26 is composed of an upper ring and a lower ring in a torsion seat 28 (see Pig. 4) the upper ring rotatably receiving ring together, ao that both rings against each other in a certain (limited) Area rotatable nind.

-A

The upper ring consists of two half-rings 11, 12 and the lower ring also consists of two half-rings 15, _{16 and the two half-rings 11, 12 and 15 f} 16 of each ring are together in a fold 19 and are each in this fold 19 by one Screw 10 held together to form the upper and lower ring.

In the upper ring, at least one half-ring 11 or 12, preferably one in both half-rings 11, 12, is curved running anger 14 except, through which a locking screw 13, preferably a knurled screw, grips which engages in a threaded hole 2o of the respective lower half-ring 15,16 and thus the two rings according to their Rotation adjustment fixed against each other.

On the one hand, the arch size of the hat 14 determines the amount of twist of the two rings against each other and on the other hand are in the lower half-rings 15,16 several at a distance on the Threaded holes 2o arranged in a semicircular arc are provided, so that the locking screw 13 depending on the desired or required amount of rotation in one or the other threaded hole 2o can be screwed in.

The two rings 11,12 / 15,16 can be adjusted depending on the arch size the groove 14 by 45 to the left or to the right or also by 45 ° to the left and to the right. It is preferred to provide only one locking screw 13, which is then optionally in one or the other JJut 14 and one or the other threaded hole 2o can be used, so that this practically any amount of rotation of the two rings 11,12 / 15,16 against each other is possible.

The alignment ring 26 is preferably in the two lower Rails 17 inserted, and the upper, the toothing 22a having rail part 17a is with the upper Ring (each with a half ring 11, 12) in connection and on

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the lower ring - each with a Harbring 15,16- is the the rest of the rail part 17 showing the drill holes 2 is attached.

The connection of the rails 17a, 17 with the half-rings 11, 12, 15,16 takes place by screws 21 according to Fig. 4-.

By means of the mutually displaceable rails 1, 17 and the aligning ring 26 which can be rotated against each other it is possible to straighten displaced and twisted bone fractures. It's now also a straightening of kinked ones To be able to carry out bone fractures, the straightening device with joints 25 in the form of universal joints, Ball joints, swivel joints, the like. equipped, which according to FIG. 8 is preferably used in the rail part 17a or between the housing 6 and the upper ring 11, 12. A joint 25 is assigned to springs, pair of rails 1.17.

In Fig. 8 by the arrow "X" the longitudinal displacement of the rails 1, 17 against each other and the arrow "Z" shows the lateral tilting (pivoting) of the two upper rails 1 relative to the lower rails 17 by the two joints 25 and the . Arrow indication ^W Y * in Fig. 9 indicates the rotation of the ring 26 transversely to the longitudinal direction of the rail.

In Fig. 8, 27a denotes a bone fracture.

The individual parts of the straightening device according to the invention exist at least for the most part made of a radiolucent material such as plastic (polyamide).

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Claims (12)

Claims ί 1. / Fracture straightener, with two in one ^ -. Housing via toothing means in the longitudinal direction mutually adjustable rails, which run in boreholes transversely to the longitudinal direction of the rails lilägel fixable record, characterized by one that holds two pairs of rails (1.17) at a distance from one another, is divided into itself and with the two opposite rails (1 or 17) of the two pairs of rails (1,17) against each other steplessly aligning ring (26) which can be rotated and fixed in the set rotational position. 2. Straightening device according to claim 1, characterized in that the straightening ring (2-6) consists of an upper and one is formed lower, each from two half-rings (11,12 / 15,16) composed ring, the lower Ring (15,16) the upper ring (11,12) in a torsion seat (28) receives rotatable. 3. Riohtgerät according to claim 1 and?, Characterized in that d! a ß the two half rings (11,12) of the upper one and the two half rings (13 »16) of the lower ring each lie together in a square (19) and close together in this fold (19) by means of screws (18) are each connected to a closed ring. 4. straightening device according to claims 1 to 3, characterized characterized in that the alignment ring (26) is below of the two the pairs of rails (1.17) against each other slidably accommodating housing (6) and preferably in the two lower rails (17) is used. 5. straightening device according to claims 1 to 4-, characterized in that on each half-ring (11, 12) of the upper ring a rail part (17a) showing the third toothing (22a) and attached to each half ring (15, 16) of the lower ring the rail 07) with the drill holes (2) is attached for the nails (4), the rail part (17a) or the rail (17) on their associated half-ring (11, 12, 15, 16) by one each running in the longitudinal direction of the rails Screw (21) is releasably set. 6. straightening device naoh claims 1 to 5, characterized in that that in at least one half ring (11 or 12) of the upper ring, preferably in both Half-rings (11, 12) an arcuate groove (14) is recessed and one through at least one groove (14) into a ffewindeloch (2o) one of the two half rings (15,16) of the lower ring to pest the two Plague screw (13) engaging with mutually twisted rings is inserted. 7. straightening device according to claims 1 to 6, characterized characterized in that in both half rings (15,16) of the lower ring several threaded holes (2o) arranged at a distance from one another on a half-ring arch for optional insertion of the locking screw (Ί3), which is preferably formed by a knurled screw are. K VO 07 8. straightening device according to claims 1 "to 7, characterized in that the amount of rotation of the two rings (11,12 / 15,16) against each other 45 ° _f 90 ° or more" is. 9. straightening device according to claims 1 "to 8, characterized in that between the two housings (6) and the alignment ring (26) each have a joint (25), such as a ball joint, universal joint or swivel joint, to the side Pivoting (tilting) the upper rails (1) relative to the lower rails (1.7) is arranged, 10. A straightening device according to claims 1 to 9 _f, characterized in that each joint (25) is inserted into the rail part (17a) or is attached with its joint parts on the one hand to the housing (6) and on the other hand to the half-rings (11, 12). 11. straightening device according to claims 1 to 1o, characterized marked that the same thing in three planes, and although in the longitudinal direction of the rails, in the direction of rotation transversely to the longitudinal direction of the rails and in the pivoting direction is adjustable transversely to the plane of rotation. 12. Straightening device according to claims 1 to 11, characterized in that the same at least partially consists of a radiolucent material.