RU21863U1 - COMPRESSION-DISTRACTION DEVICE FOR TREATMENT OF BONE TISSUE FRACTURES - Google Patents

Abstract

1. Compression-distraction device for treating bone fractures, containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, special fixing bolts with a rectangular groove on the inside of the bolt head at an angle to the axis of the bolt, knitting needle, located on the rings and half rings, characterized in that the angular groove on the washer is made at an angle of 3 to 7 with respect to the plane of the washer on both sides with the formation of a face, the rectangular groove of the spoke bolt is made at an angle of 3 to 7 with respect to one and faces the bolt-head spitsefiksatora on two sides to form graney.2. A compression-distraction device for treating bone fractures, containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, special fixing bolts with a rectangular groove on the inside of the bolt head at an angle to the bolt axis, knitting needles located on rings and half rings, characterized in that the angular groove on the washer is made at an angle of 3 to 7 relative to the plane of the washer on both sides with the formation of a face. 3. A compression-distraction device for treating bone fractures, containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, special fixing bolts with a rectangular groove on the inside of the bolt head at an angle to the bolt axis, knitting needles located on rings and half rings, characterized in that the rectangular groove of the special-purpose bolt is made at an angle of 3 to 7 relative to one of the faces of the head of the special-fastener bolt on both sides with the formation of a face.

Description

COMPRESSION-DISTRACTION FOR TREATMENT OF BONE TISSUE FRACTURES

The proposed solution relates to medical equipment, namely to orthopedics traumatology and is intended for the treatment of bone fractures.

Currently, compression and straining devices are widely used to treat bone fractures.

For example, “A device for reposition, compression and fixation of bone fragments, AS No. 1301395

MKI4 Ab1v 17/58, publ. 04/07/07., Bull. No. 13, consists of an outer bracket and an inner bracket, and is equipped with two reponentive nodes, each of which contains a base with lead screws connected in pairs. One of the lead screws is connected to a threaded rod, which has threaded holes and a smooth hole, a “L-shaped bracket. When the spindle rotates, the rod moves along it and is fixed with a thrust washer.

The threaded rods are fixed and moved using nuts. The location of the spokes near the fracture along with dosed compression

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provides sufficiently reliable fixation of fragments, however, the spokes in-, this unit are not sufficiently securely fixed on the brackets, so at high loads they often have to be retightened. l, Other “Device for reposition of fragments of tubular bones as. No. 1287868, MKI 4 Ab1v 17/58, publ. 02/07/07, bull.no05 contains rings with couplers, brackets, threaded rods, spoke holders, knitting needles. Set rings with screeds and fix the upper and lower ends of the bone with knitting needles held "X-shaped. Using pliers, the fixed ends of the spokes are bent and installed perpendicular to the axis of the fragment and mutually in parallel. The brackets are mounted with brackets with the longitudinal axis in the direction of the transverse reposition, their unbent ends of the spokes are fixed. By rotating the threaded rod, the bone fragment is moved in the direction of reposition, providing sufficient fixation rigidity. However, this device allows to increase the stability and rigidity of the fragments due to the bending of the spokes, which is not always justified, for example, if necessary, their pulling. Closest to the proposed technical solution is “Compression kit ......- ..„ ja.y.v .....- ,. ..; .., j, J,,

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distraction apparatus G. A. Ilizarov for the upper limbs, lower leg, thigh. Passport A. 101.00.00.00 Substation, Gudermes, 1985

This device contains rings, half rings, arcs, trims, threaded rods, telescopic rods, brackets with a threaded shank, beams, bolts, nuts, washers, spokes, special bolts, washers with a groove. This device is universal and allows you to get stable osteosynthesis in almost any fracture of the limbs. However, this device has the following disadvantage - the method of attaching the spokes to rings, half rings, or arcs is not rigid enough. The knitting needles are fixed using a special washer with an angular groove, bolt and nut. In this type of fixing, the contact area of the spoke with the washer and the ring, half-ring, and large arc. The tightening torque of a bolt with a nut (a metric thread is usually used) is not high enough, therefore, with large axial loads on the spoke, it begins to shift in the groove of the washer, which can lead to undesirable consequences during treatment.

In this apparatus there is a second way of fixing the knitting needles - using a special bolt-spoke fixator with a rectangular groove on the inside of the bolt head at an angle to the axis of the bolt.

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/ 5о / у With this method of fixing the knitting needle, the same drawback is manifested - with large axial loads on the spoke, it cannot be fixed rigidly, because the contact area of the spoke with the groove of the bolt and the surface of the ring, half ring, arc is large, and the clamping force is limited by the small size of the bolt of the spoke fixer and nut (metric thread Mo /. The technical problem to be solved in the proposed technical solution is to increase the stability of osteosynthesis by increasing the reliability of fixing the spokes. The technical problem to be solved in a compression-distraction device for treating bone fractures, its first embodiment containing rings, half rings, trims, threaded rods, a bolt , nuts, washers with an angular groove, fixing bolts with a rectangular groove on the inside of the bolt head at an angle to the axis of the bolt, the spokes located on the rings and half rings are achieved by the fact that the angular groove on the washer is made at an angle of 3 to 7 degrees relative to the washer plane on both sides with the formation of a face, the rectangular groove of the bolt-spoke fixator is made at an angle of 3 to 7 degrees relative to one of the faces of the head of the bolt-spoke fixator on both sides with the formation of a face. / h

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The technical problem to be solved in compression and distraction devices for the treatment of bone tissue fractures, its second version containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, special fixing bolts with a rectangular groove on the inside of the bolt head under angle to the axis of the bolt, the spokes located on the rings and half rings are achieved by the fact that the angular groove on the washer is made at an angle of 3 to 7 degrees relative to the plane of the washer on both sides with the formation of a face. The technical problem to be solved in a compression-distraction device for treating bone fractures, its third embodiment, containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, special fixing bolts with a rectangular groove on the inside of the bolt head at an angle to the axis of the bolt, the spokes located on the rings and half rings are achieved by the fact that the straight groove of the spoke bolt is made at an angle of 3 to 7 degrees relative to one of the faces of the head of the spoke bolt from two sides with the formation of the face. increase is achieved laid in (using h

. the reliability of fixing the knitting needles in the first embodiment by the fact that the spoke, the angular groove of the washer is pressed by the face of the bolt and nut) to the surface of the ring, half ring. In this case, the spoke at the point of contact with the face is deformed, excluding the possibility of its axial movement. The same goal, on the same device is achieved by the fact that the face in the groove of the bolt-spoke fixator also deforms the spoke, eliminating the possibility of its axial movement. The achievement of the technical task, in the second version of the device, is only ensured by the use of washers in the device with an angular groove at an angle of 3 to 7 degrees relative to the plane of the washer on both sides with the formation of a face .--,:.: „,; .t: .-. ™ - yes ИВ Achieving the technical task in the third version of the device is guaranteed only by the use of a bolt-spoke with a rectangular groove made at an angle of 3 to 7 degrees relative to one of the faces. the heads of the bolt on the two sides with the formation of a face. In FIG. 1 shows a compression-distraction device for treating bone fractures. - lifci IP - ri j-j-jiiifr f h

/ h of I tissue in the treatment of the elbow joint. In FIG. 2 shows a washer with an angular groove, enlarged. In FIG. 3 shows a washer with an angular groove, side view, enlarged. In FIG. 4 shows a section of a washer with an angular groove along an angular groove, enlarged. In FIG. 5 shows a bolt-spoke with a rectangular groove on the inside of the head of the bolt at an angle to the axis of the bolt, enlarged. In FIG. b shows the cross section of the head of the bolt of the special fixator along a rectangular groove, enlarged. The compression-distraction device for treating bone fractures, its first version, contains rings 1, half rings 2, straps 3, threaded rods 4, bolts 5, nuts b, washers 7 with an angular groove 8, special bolts 9 with a rectangular groove 10 s the inner side of the head of the bolt 11 at an angle to the axis of the bolt 12, the spokes 13 located on the rings 1 and half rings 2. The angular groove 8 on the washer 7 is made at an angle: “and from 3 to 7 degrees relative to the plane of the washer 7 on both sides with the formation of a face 14. The rectangular groove 10 of the bolt-pin 9

made at an angle "| 3 from 3 to 7 degrees relative to one of the faces 15 of the head 11 of the bolt 5 on both sides with the formation of the face 16.

Compression-distraction device for treating bone fractures, its second option, contains rings 1, half rings 2, straps

3, threaded rods 4, bolts 5, nuts b, washers 7 with an angular groove 8, spoke bolts 9 with a rectangular groove 10 on the inside of the head of the bolt 11 at an angle to the axis of the bolt 12, the spokes 13 located on the rings 1 and half rings 2 The angular groove 8 on the washer 7 is made at an angle "and from 3 to 7 degrees relative to the plane of the washer 7 on both sides with the formation of the face 14.

A compression and distraction device for treating bone fractures, its third variant, contains rings 1, half rings 2, straps 3, threaded rods 4, bolts 5, nuts b, 7 with an angular groove 8., special bolts 9 with a rectangular groove 10 s the inner side of the head of the bolt 11 at an angle to the axis of the bolt 12, the spokes 13 located on the rings 1 and half rings 2. The rectangular groove 10 of the bolt spoke 9 is made at an angle of "p from 3 to 7 degrees relative to one of the faces 15 of the head 11 of the bolt 5 s two sides with the formation of the face 16.

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tissue, its first option, works as follows.

The device (in all three versions) is mounted at the fracture site in accordance with the installation procedure. Install rings 1, half rings 2, straps 3. All this is connected by threaded rods 4 with bolts 5 and nuts b. In the first version, the spokes 13 are held “X-shaped, stretched and then fixed on the rings 1. half rings 2 with washers 7 with an angular groove and the surface of the rings 1, half rings 2 with bolts 5 with nuts 6. 13 are tensioned, then fixed on the rings with special fixing bolts 9 with a rectangular groove 10 on the inside of the head of the bolt 11 at an angle to the axis of the bolt 12.

When fixing the spokes 13 in the angular groove on the washer 7 and the surface of the rings 1 or half rings 2 with the help of bolts 5 and nuts b, a slight deformation of the spokes 13 0 with the face 14 of the angular groove 8 occurs. The longitudinal movement of the spokes 13 relative to rings 1, half rings 2 is excluded .. At an angle “Os less than 3 degrees, the deformation of the spokes is insignificant and its longitudinal movement relative to rings 1, half rings 2 is possible at high axial loads. h at large axial loads, breakage of the spokes 13 at the place of deformation by the face 14 may occur. When the spokes 13 are fixed in the rectangular groove 10 of the special bolt 9 and the surface of the rings 1 and half rings 2 with the help of nuts b, a slight deformation of the spokes 13 with the face 16 of the rectangular groove 10 occurs. The longitudinal movement of the spokes 13 relative to the rings 1 / half rings 2 is excluded. At an angle ((менее less than 3 degrees, the deformation of the spoke is insignificant and its longitudinal movement with respect to rings 1, half rings 2 is possible at high axial loads. In the first version of the device, the stability of the osteo-joint is increased by using washers 7 with an angular groove 8 and bolt-shaped clamps 9 with a rectangular the groove 10. In the second embodiment, the device is used and works similarly to the first variant. azom 8 formed at an angle "a 3 to 7 degrees relative to the plane of the washer 7 from both sides to form the facets 14. In a third embodiment, the device is used and operates similarly to the first embodiment: 5 jdiyfe

 i S5S; S44 i Jftiir fCiiViiMlSSfci - using a special bolt 9 with a rectangular groove 10, made at an angle “(5 from 3 to 7 degrees relative to one of the faces 15 of the head 11 of the bolt 5 on both sides with the formation of the face 16. This device allows you to reduce reposition time by increasing the rigidity of fixation of fragments./h

Claims (3)

1. Compression-distraction device for treating bone fractures, containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, special fixing bolts with a rectangular groove on the inside of the bolt head at an angle to the axis of the bolt, spoke, located on the rings and half rings, characterized in that the angular groove on the washer is made at an angle of 3 to 7 ^o relative to the plane of the washer on both sides to form a face, the rectangular groove of the bolt-spoke is made at an angle of 3 to 7 ^o relative to one d of the faces of the head of the bolt-spoke from two sides with the formation of faces. 2. Compression-distraction device for treating bone fractures, containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, special fixing bolts with a rectangular groove on the inside of the bolt head at an angle to the axis of the bolt, spoke, located on the rings and half rings, characterized in that the angular groove on the washer is made at an angle of 3 to 7 ^o relative to the plane of the washer on both sides with the formation of the face. 3. Compression-distraction device for treating bone fractures, containing rings, half rings, trims, threaded rods, bolts, nuts, washers with an angular groove, spoke bolts with a rectangular groove on the inside of the bolt head at an angle to the axis of the bolt, spoke, located on the rings and half rings, characterized in that the rectangular groove of the special bolt is made at an angle of 3 to 7 ^o relative to one of the faces of the head of the special bolt on both sides with the formation of a face.