SU1410963A1 - Intraosseous fixative for osteosynthesis - Google Patents

Abstract

The invention is intended for traumatology. The purpose of the invention is to reduce the trauma when removing the lock. The retainer comprises rods t, having middle rectilinear portions 2 and curved ends 3 connected to one another. The sections 2 of the rods 1 are arranged in parallel and with the possibility of changing the distance between them due to the memory effect. The clamp provides strong osteosynthesis. 4 or

Description

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The invention relates to the medical field, namely to traumatology and orthopedics, and can be applied to the treatment of fractures of tubular bones. .

The purpose of the invention is to reduce the trauma when removing the retainer.

FIG. 1 An intraosseous fixer for osteosynthesis is shown, the general view of FIG. 2 - the same, in working condition; in fig. Figures 3 and 4 show the osteosynthesis of an oblique fracture of the tubular bone using variants of the ankle clamp.

The intraosseous fixator is made of a material that has a memory effect of forms, for example titanium nickelide.

lead B previously drilled in juxtaposed fragments. The diameter of the bone canal corresponds to the diameter of the fixer after deformation in the cooled state. Sections 2 of the rods are placed in the bone channel, and the ends 3 over the surface of the bone fragments or partially placed in the bone channel. The fixer is held for 15–20 s, due to contact heating of the stitches until the reverse phase transition of titanium nickelide occurs and the original shape of the device is restored. Due to the increase in the cross section of the middle part of the fi gator, the sections 2 are wedged in the kohn channel, the bone fragments are reliably fixed, and as a result of restoring the original length, their additional compression is achieved (Fig. 2). After the end of treatment, the ends 3 are snapped or cut and the rods are alternately removed from the bone canal.

The proposed fixative provides a strong osteosynthesis, is atraumatic and is involved after the completion of treatment.

The intraosseous fixator contains 20 rods 1J, for example four, having middle straight sections 2 and curved ends 3 connected to each other. Plots 2 rods 1 are arranged in parallel and with the possibility of changing the distance 25 between them due to the memory effect.

Such a number of them, when the device is deformed in a cooled state, allows to reduce the amount of transverse DZ, the amount of operation decreases when it is in the middle section of the fixation-removal, torus approximately 2 times) that after restoring the original shape of the device, the inoperative state provides the necessary reliability fixing krst-. the fragments as well as the ease of extraction of the rods 1 from the bone canal after cutting or cutting the ends of the 3 rods.

The device works as follows.

The intraosseous fixer is irrigated with chloroethyl for 10–20 s. At tem35

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Formulas of bothersome

An intraosseous fixative for osteo synthesis, containing a rod with iso fi ed ends, is made of a material with a memory effect, which is so that, in order to reduce trauma, when removing a fixator, the middle portion of the core is straight linear, and the curved ends have a connection with the curved ends of the additional rods, with the middle sections of the main and additional rods parallel to the possible change of the distance between them.

The temperature is lower than -30 ° C, the cross section of the device is reduced (Fig. -3) with the help of 1zip, and the total length of the fixture is also increased at the same time. Further straightened latch

lead B previously drilled to the oil in the matched fragments. The diameter of the bone canal corresponds to the diameter of the fixer after deformation in the cooled state. Sections 2 rods are placed in the bone channel, and the ends 3 - above the surface of the bone fragments or partially placed in the bone channel. The fixer is held for 15-20 seconds, due to the contact heating of the stitches 1 until the reverse phase transition of titanium nickelide occurs and the original shape of the device is restored. Due to the increase in the cross section of the middle part of the fixer, the sections 2 are wedged in the bone channel, fixing the bone fragments reliably, and as a result of restoring the original length, their additional compression is provided (Fig. 2). After the end of treatment, the ends 3 are snapped or cut and the rods are alternately removed from the bone canal.

The proposed fixative provides durable osteosynthesis, is atraumaticly removed after completion of treatment.

the volume of the operation decreases when it is deleted,

the volume of the operation decreases when it is deleted,

Formulas of bothersome

Intraosseous fixer for osteo. synthesis, containing a rod with curved ends, made of a material with a memory effect, about t and that with the aim of reducing trauma when removing the retainer, the middle section of the rod is straight, linear, and the bent ends have a connection with curved ends of additional rods, with the middle sections of the main and additional rods arranged in parallel with the possibility of changing the distance between them.

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Claims (1)

Φ o r mula Intraosseous fixator for osteo-. synthesis containing a rod with curved ends, made of a material with a memory effect, which means that, in order to reduce trauma when removing the latch, the middle part of the rod is made rectilinear, and the curved ends are connected to the curved ends of additional rods moreover, the middle sections of the main and additional rods are parallel with the possibility of changing the distance between them.