RU62804U1 - DEVICE FOR TREATING ANIMAL PELVIS FRACTURES - Google Patents

Abstract

The apparatus for treating fractures of the pelvic bones of animals contains pelvic supports connected by means of beams with threaded shanks and mounted on their ends with the possibility of displacement of the threaded rods, a femoral support connected to one of the beams by means of threaded rods and at least two hinges rotated in series in mutually perpendicular planes, as well as knitting needles and fixing rods fixed to the supports. Thus, during the treatment of animals, destabilization of fragments of the pelvic bones is prevented and the possibility of maintaining movements in the hip joint is ensured.

Description

A useful model - an apparatus for treating fractures of the pelvic bones of animals - refers to veterinary medicine and can be used to restore the integrity of the bones of the pelvis of animals in case of damage.

A device for osteosynthesis of the pelvic suture of small domestic animal bones, containing a support in the form of an arc, mounted on a support with the possibility of an angular turn and threaded guides interconnected by a threaded coupler, as well as elements for fixing the pelvic bones made in the form of knitting needles and fixing rods. (RF patent for utility model No. 38107, publ. 27.05.04, bull. No. 15).

However, the known design does not provide the possibility of dosed reposition of individual fragments of the pelvic bones both directly during surgery, and at the stages of treatment. In addition, its design does not provide the possibility of fixing the pelvic limb, which during the treatment of fractures of the pelvic bones, due to the natural mobility of the animal, adversely affects the course of osteoreparation, as this results in a repeated displacement of bone fragments.

A known apparatus for treating pelvic bone fractures of animals, comprising hinged pelvic and femoral supports made in the form of arcs articulated between threaded rods, threaded guides mounted on supports and guiding bone retainers in the form of spokes and fixing rods, as well as connecting and fixing elements (RF Patent for utility model No. 11699 publ. 11/16/99, bull. No. 11).

However, the use of this apparatus does not provide for the possibility of maintaining movements in the hip joint during fixation, which leads to a limitation of its function after dismantling the apparatus. At the same time, the use of threaded guides in the structure as supporting elements does not provide sufficient rigidity for the fixation of fragments, especially at the level of the caudal sections of the ischial bones.

The objective of the claimed utility model is the development of an apparatus for the treatment of fractures of the pelvic bones of animals, which ensures the prevention of destabilization of bone fragments, as well as the ability to maintain movements in the hip joint during fixation.

This problem is solved in that the apparatus for treating fractures of the pelvic bones of animals, containing the pelvic and femoral supports, made in the form of arches, threaded guides mounted on supports and guide spokes and fixing rods, as well as connecting and fastening elements, is equipped with an additional pelvic support, connected to the opposite pelvic support by means of beams with threaded shanks and fixed at their ends with the possibility of displacement of the threaded rods, and the femoral support is connected to one of the beams using therefore interconnected threaded rods and at least two hinges, rotatable in mutually perpendicular planes.

The utility model is illustrated by the description and diagram, which shows:

Figure 1 - apparatus for the treatment of fractures of the pelvic bones of animals, General view.

The apparatus for treating fractures of the pelvic bones of animals (Figure 1) contains pelvic supports 1, 2 and femoral support 3 made in the form of arches. Moreover, the pelvic supports 1 and 2 are connected via threaded beams 4

shanks 5 and fastened at their ends with the possibility of displacement of the threaded rods 6, and the femoral support 3 is connected to one of the beams 4 using threaded rods 7 and 8 sequentially interconnected, as well as hinges 9 and 10, rotating in mutually perpendicular planes.

Spokes 12 and fixing rods 13 are fixed to supports 1, 2, and 3 using spoke fixators 11. The latter are also fixed to the ends of threaded guides 14 mounted with the possibility of reciprocating movement on support 1.

For fastening, connecting parts of the apparatus and mounting the hinges of the assemblies, strips 15, brackets 16, fixing nuts 17 and bolts 18 were used.

An apparatus for treating pelvic bone fractures in animals is used as follows.

In a veterinary clinic, after anesthesia and treatment of the surgical field, taking into account the location of the fracture, the lumbosacral spine and the cranial pelvis are fixed. For this, after the initial closed reposition of the fracture, the spokes 12 are carried out crosswise through the body and the spinous process of the seventh lumbar vertebra, the wings of the ilium and sacrum, and they are also cantilevered into the caudal part of the sciatic bone. The ends of the spokes 12, in tension, are fixed directly to the pelvic supports 1 and 2 installed in the projection of the corresponding parts of the pelvis or to the brackets 16 additionally fixed to these supports. After that, the pelvic supports 1 and 2 are connected to each other by means of beams 4 with threaded shanks 5 and fixed at their ends with the possibility of displacement of the threaded rods 6.

In the presence of a marginal pelvic fracture, the dislocated fragment is fixed to the maternal bone with fixing rods 13, the free ends of which are mounted on threaded guides 14 mounted with the possibility of reciprocating movement on the pelvic arch 1.

To prevent displacement of the fragments of the pelvic bones in the postoperative period, the femur is fixed on the damage side. To do this, 2-3 knitting needles 12 are passed through a large skewer and, in addition to them, a fixing rod 13 is introduced from the underrochanteric region. These spokes and a rod are mounted using the special fixators 11 either directly on the femoral arch 3 or on the brackets 16 installed on the last.

After giving the femur a natural physiological position, the femoral arch 3 is connected to the adjacent beam 4 using successively interconnected threaded rods 7 and 8, as well as hinges 9. Moreover, the hinges 9 and 10 are fixed so that they are turned in mutually perpendicular planes.

After installation of the apparatus, control radiography is performed and, based on its data, the final reposition of fragments of the pelvic bones is carried out. To do this, by rotating the fastening nuts 17, the beams 4, the supports 2 are metered to move along the threaded rods 6, the threaded guides 14 or the fixing rods fixed at their ends 13. After the reposition is complete, the apparatus systems are stabilized.

In the postoperative period, the tension of the bolts 18, which are fixed in the hinges, is weakened, which allows maintaining the function of the hip joint in the adduction-abduction volume, flexion-extension, and thereby prevents the development of postoperative limitation of its mobility.

Upon reaching the consolidation of the fracture, the apparatus is dismantled, which is performed in the reverse order.

The use of the proposed apparatus for the treatment of fractures of the pelvic bones of animals prevents the destabilization of bone fragments in the process of fixation and provides the ability to maintain movements in the hip joint.

Claims (1)

An apparatus for treating fractures of the pelvic bones of animals, containing the pelvic and femoral supports made in the form of arcs, threaded guides mounted on supports and guide spokes and fixing rods, as well as connecting and fastening elements, characterized in that it is equipped with an additional pelvic support connected to the opposite pelvic support by means of beams with threaded shanks and fixed at their ends with the possibility of displacement of the threaded rods, and the femoral support is connected to one of the beams using a follower of interconnected threaded rods and at least two hinges, rotating in mutually perpendicular planes.