RU169624U1 - DEVICE FOR OSTEOSYNTHESIS - Google Patents

Abstract

The utility model relates to the field of medicine, in particular to medical equipment, namely to surgical devices for treating the human musculoskeletal system located along the bone and intended for osteosynthesis of bone fragments, namely it is used in traumatology for the treatment of various injuries of bones and joints. The result of the utility model is the expansion of the arsenal of medical equipment with wide fixation capabilities, ease of position regulation and reliable fastening of fixation structural elements to the osseous plate, at different depths and different tilt of the threaded holes in the osseous plate with preservation of the rigidity of their subsequent fixation. The specified result is achieved by the fact that the device for osteosynthesis contains a support plate, washers, cantilever reconstructive attachment, fixing elements, connecting screws, knitting needles. The base plate is equipped with oval holes for standard cortical screws and tapered threads with tapered threads for lockable screws. The axis of the conical holes is perpendicular or at an angle to the horizontal planes of the base plate. In addition, the device is equipped with a curly console reconstructive console. One part of the prefix is made at an angle with respect to the second part of the prefix, the connecting screws are made in the form of a stepped cylinder, the fastening end of which is equipped with an external thread, the working end is with cutting edges. The cylinder step, located closer to the mounting end, is made as part of a conical surface. Stage between

Description

The utility model relates to the field of medicine, in particular to medical equipment, namely to surgical devices for treating the human musculoskeletal system located along the bone and intended for osteosynthesis of bone fragments, namely it is used in traumatology for the treatment of various injuries of bones and joints.

Known Screw (DIN 553) installation locking with a straight slot and a sharp conical end. The end of the set screw has a special shape that serves to fix the products relative to each other (Electronic resource: http://krepegcity.ru/fasteners.php).

Known bone osteosynthesis, which is performed using plates of various lengths, widths, shapes and thicknesses, with holes made in the plates. Through the holes, the plate is connected to the bone using screws. The latest achievements in the field of bone osteosynthesis are plates with angular stability, and now also with polyaxial stability (LCP). In addition to the thread on the screw, with which it is screwed into the bone and fixed in it, there is a thread in the holes of the plate and in the screw head, due to which the head of each screw is firmly fixed in the plate. This method of fixing screws in the plate significantly increases the stability of osteosynthesis (Electronic resource: ttp: //www.orthoscheb.com/technology/osteosintez-s-primeneniem-vysokotekhnologichnykh-sovremennykhkh-metodov-lecheniya/).

Known special fixer-tensioner, comprising a housing made with a longitudinal groove under the spoke, equipped with a threaded shank for fixing on the support by means of a nut, a tensioner and an element for fixing the knitting needles, in which the housing is made in the form of a fork with an opening perpendicular to the longitudinal groove, the tensioner is installed in the hole in the form of a bolt equipped with a longitudinal groove in the rod part, and fixed with a nut and washer, the washer partially entering the longitudinal groove, the fixing element is made in the form of a screw installed in bovom housing bore, passing across the longitudinal gutter (Patent RU №144683. Publ. 08.27.2014).

However, the known special fixator-tensioner is designed to fix and tension the spokes in devices for transosseous osteosynthesis and is not intended for its installation on the plates.

A device for transosseous osteosynthesis is known, comprising a housing with longitudinal slots, in which there are coupling bolts, sliders with rods, spacer frames, and a locking nut of horizontal reposition containing a housing with a rectangular hole is installed on the coupling bolt, two half nuts are movably mounted in the latter, and a cam sleeve located on the housing and interacting with cams with half nuts (Patent RU No. 2139006. Publish. 10.10.1999).

However, the design of the bolt in the known apparatus for transosseous osteosynthesis is not intended for its use when fixing the spokes on the plate.

Known reponny site in which an additional locking screw is inserted, installed in the threaded groove from the side opposite to the fixing element and aligned with it, and in the sleeve, perpendicular to the main and at the same level, an additional central channel is made (Patent RU No. 79264. Publ. 12/27/2008).

Known fixer for osteosynthesis of tubular bones, containing knitting needles for fixing bone fragments, a base and a clamping element made in the form of plates with coaxial inclined channels for spokes, and in the base plate there are threaded holes for clamping screws, in addition, the base is made with tides for threaded holes for the central and peripheral clamping screws, the clamping element is made with peripheral oval holes for the tides of the base with threaded holes for peripheral clamping screws and an elastically deformable bend in the central part, on which a central circular hole for the base tide with a threaded hole for the central clamping screw is made, inclined channels for the spokes are three and equidistant around each hole for the peripheral clamping screws, and elevations are made around the outlet openings of the base channels moreover, the diameter of the central circular hole and the small diameter of the oval peripheral holes in the clamping element correspond to the outer diameter of the adj willow base (Patent RU No. 2234879. Publ. 04/27/2004).

A known set of metal structures for transosseous osteosynthesis of tubular bones, including arcs of various sizes, Kirschner spokes and bolts of a distraction and compression apparatus, characterized in that it has bolts with a body having the shape of an octahedron and with a threaded part 30 mm long, the arc is 1/3 the circumference of the ring with holes at both ends having the shape of an octahedron (Patent RU No. 2368346. Publ. September 27, 2009).

However, the known set of metal structures is not intended for bone osteosynthesis.

Known osseous fixation system, which contains a set of standard sizes of supports made in the form of support plates, washers, attachments, connecting elements, in the form of compression screws, and knitting needles (Application PCT / RU No. 2013/000381 of 05/06/2013. Publ. WO 2014 / 182189 - 11/13/2014).

However, the known osseous system has limited fixation capabilities, in addition, it lacks the ability to easily control the position of the fixation structural elements.

The objective of this utility model is to expand the arsenal of medical equipment intended for osteosynthesis of skeleton bone fractures, the result is manifested in the expansion of fixation capabilities by easily adjusting the position and reliably fixing fixation structural elements, namely, knitting needles and cantilever reconstructive attachments, at various depths and different tilt of the threaded holes in the osseous plate while maintaining the rigidity of their subsequent fixation.

The problem is solved in that in the device for osteosynthesis containing a support plate, washers, cantilever reconstructive attachment, fixation elements, connecting screws, knitting needles, the support plate is equipped with oval holes for standard cortical screws and tapered holes with tapered thread for lockable screws, while the axis of the conical holes is perpendicular or at an angle to the horizontal planes of the base plate, in addition, the device is equipped with a figured cantilever reconstruction a prefix, while one part of the prefix is made at an angle to the second part of the prefix, the connecting screws are made in the form of a stepped cylinder, the fastening end of which is equipped with an external thread, the working end is made with cutting edges, and the step closer to the fastening end is made in the form parts of the conical surface, the step between the conical surface and the cylinder is made in the form of a single-cavity hyperboloid, a nut is located on the mounting end, the cylindrical surface of which is made in e part of the conical surface from the larger diameter end of the grooves arranged perpendicularly relative to each other.

It is advisable to expand the fixation capabilities, one part of the curly console reconstructive console to execute at an obtuse angle with respect to its second part.

It is advisable, for tight stabilization of the cantilever reconstructive attachment to the base plate, the connecting screws are made in the form of a stepped cylinder, the fastening end of which is equipped with an external thread, the working end is shortened.

In an embodiment, in order to be able to fix the spokes, it is advisable to equip the device with washers, each of which is made in the form of a rectangular prism, one of the horizontal surfaces of which is rounded, on the side of the second horizontal surface there are cylindrical grooves located parallel to each other.

The present utility model is explained in a detailed description, schemes in which:

FIG. 1 shows a partial cross-sectional front view and a top view of an osteosynthesis device;

FIG. 2 shows a screw, the fastening end of which is equipped with a nut and is made with a cut;

FIG. 3 shows a screw with a shortened working end and a fastening end equipped with a nut and made with a cut;

FIG. 4 shows a front view in partial cross-section and a top view of an osteosynthesis device equipped with spokes fixed with a nut and washers.

The device for osteosynthesis contains a support plate 1 (Fig. 1), which contains oval holes for standard cortical screws 2 and conical holes with a tapered thread for lockable screws 3. The axis of the conical holes 3 is perpendicular or at an angle to the horizontal planes of the support plate 1 . In addition, the device for osteosynthesis is equipped with a curly console reconstructive console 4. In this case, one part of the console reconstructive console 4 is made at an angle with respect to the second part Reconstructive cantilever consoles 4. Said angle between the arm portions reconstructive console 4 is blunt.

The connecting screws 5 are made in the form of a stepped cylinder, the fastening end of which is equipped with an external thread 10, which corresponds to the internal thread in the nut of the connecting screw 6, the working end with cutting edges (Fig. 2). In this case, the step closer to the fastening end is made in the form of a part of the conical surface with a conical thread 11, which corresponds to the thread in the conical hole 3 of the support plate 1. The step between the conical surface and the cylinder is made in the form of a single-cavity hyperboloid. A nut 6 is located on the mounting end, the cylindrical surface of which is made as part of a conical surface, grooves are arranged perpendicular to each other from the side of the larger end face.

In addition, the connecting screws 5 can be made in the form of a stepped cylinder, the fastening end of which is equipped with an external thread 10, the working end 7 is made shortened (Fig. 3).

The device for osteosynthesis, for the possibility of fixing the spokes, can be equipped with washers 8 (Fig. 4). Each of the mentioned washers 8 is made in the form of a rectangular prism, the corners of the side surface of which are rounded, the edges of one of the horizontal surfaces are rounded. At the same time, from the side of the second horizontal surface, cylindrical grooves are arranged parallel to each other. In said grooves, spokes 9 are arranged and by means of nut 6.

A device for osteosynthesis works as follows.

In the operating room, under a general or local anesthesia (depending on the volume of surgical intervention), a bone fracture is repositioned. Osteosynthesis of the fracture is carried out by introducing fixing elements into the bone and fixing them to the support plate 1. At the same time, the locked screws are fixed to the support plate 1 by screwing them into its conical holes 3, and the cortical ones into oval holes 2.

As additional fixing elements, use needles 9, which are inserted into bone fragments, and the outer ends of the needles are fixed to the support plate 1. To fix the needles to the support plate 1, they are pressed against it using a washer 8. The pressing is carried out by screwing the connecting screw 5 into the screwdriver threaded conical hole of the base plate 3 so that the washer 8 and the spokes 9 located in its slots are between the base plate 1 and the nut of the connecting screw 6. After that, the nut is screwed with a Phillips screwdriver th screw thread 6 on its washer 10. In this 8 presses and fixes the needles 9 on the base plate 1.

The cantilever reconstructive console 4 is bent in the shape of a bone and fixed to the osseous plate 1 by pressing it to the support plate 1 by means of one or more connecting screws 5. For this, the reconstructive cantilever console 4 is placed on the supporting plate 1, the connecting screw 5 is inserted through the hole of the reconstructive console and screwed with a screwdriver into the conical threaded hole of the base plate 3 so that the reconstructive attachment 4 is located between the base plate 1 and the nut of the connecting screw 6. After that, the reconstructive prefix 4 is pressed against the base plate 1 by tightening the nut of the connecting screw 6 with a Phillips screwdriver. After that, screws are inserted into the bone fragments through the holes of the reconstructive device for their osteosynthesis. If necessary, spokes previously inserted into bone fragments can be fixed to the console reconstructive prefix 4 by pressing them with a washer 8 and a connecting screw 5 according to the above scheme.

The proposed utility model allows to expand the arsenal of medical equipment intended for osteosynthesis of skeleton fractures.

In addition, it expands the fixation capabilities by easily adjusting the position of the fixation structural elements relative to each other at different depths and different inclination of the threaded holes in the bone plate while maintaining the rigidity of their subsequent fixation.

Claims (3)

1. The device for osteosynthesis comprises a support plate equipped with holes consisting of communicating oval holes for standard cortical screws and tapered holes with tapered threads for lockable screws, while the axis of the tapered holes is perpendicular to the planes of the support plate, washers for fixing the spokes, cortical and lockable screws, knitting needles, characterized in that it is equipped with a curly cantilever reconstructive attachment, bent in the shape of a bone, one part of which is made at an angle in relation to the second part, while six conical holes of the second part are intended for insertion of locking screws into the bone, the first part of the attachment is fixed to the support plate through one oval and one conical hole with locking screws having a pointed working end with consecutive cutting edges, threaded cylindrical section, a section in the form of a single-cavity hyperboloid, a section with a tapered thread and a mounting cylindrical threaded end with a hexagonal recess d wrench, and a nut with a conical surface is located on the fixing end of the locked screw, and grooves for a Phillips screwdriver located perpendicular to each other are made from the end face of its larger diameter, using additional spokes, the outer ends of which are fixed with washers to the base plate. 2. The device according to p. 1, characterized in that one part of the curly console reconstructive console is made at an obtuse angle with respect to its second part. 3. The device according to claim 1, characterized in that the washers are made in the form of rectangular prisms, one of the horizontal surfaces of which is rounded, from the side of the second horizontal surface there are made cylindrical grooves for knitting needles, arranged parallel to each other.

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