SU1630804A1 - Osteosynthesis appliance - Google Patents

Abstract

The invention relates to medical technology. The purpose of the invention is to reduce the trauma during installation and removal of the device. The device is made of a material with a shape memory effect. Plate 1 is placed on the bone in a cooled state. When heated, the protrusions 5, 6 at the ends of the plate bend in opposite directions, and the ring 4 is separated. Then, in the longitudinal grooves 2, 3, the linch pins 7- are installed, the ends of which are separated when heated and seized in the slots 2, 3 of the plate. 6 Il.

Description

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The invention relates to medical technology, namely to traumatological instruments for osteosynthesis.

The purpose of the invention is to reduce trauma during installation and removal of the device.

FIG. 1 shows a device for osteosynthesis in the working position, top view; in fig. 2 - plate in working position, side view; in fig. 3 - the same, after device Plate 1, the device is cooled to a temperature below 10 ° C, for example, by spraying with chloroethyl for 5-10 seconds, then cooled plate 1, ring 4 of which is reduced, and projections 5 and 6 are arranged perpendicular to plate 1, impose on juxtaposed bone fragments 10 and 11. After 20-30 s in connection with the effect of formation, which occurs upon contact heating of titanium nickelide to 35 ° C

after deformation in a chilled state, u plate 1 tends to accept a given

view from above; in fig. 4 - the same, side view; (tf is the initial) form; protrusions 5 and 6

in fig. 5 is a section A-A in FIG. one; bends outwardly and ring 4 is diluted

FIG. 6 - device pin after deformation - ensuring fixation of the plate and compression in a cooled state, side view of bone fragments 10 and 11. Then, the device for osteosynthesis contains 15 poured cooled pin 7 into place.

plate plate 1 with a longitudinal groove-with the ends of the 8. In the process

mi 2 and 3, with a jumper in the form of an oval-shaped ring 4 in the middle part and protrusions 5 and 6 bent at the ends, as well as cotter pins 7, made in the form of curvier-heating of cotter pins 7 to 30 ° C; and are wedged in slots 2 and 3 and in the medullary canal. Thus, provided plates containing an arcuate 20 with a reliable compression osteosynthesis, bent to opposite sides of the cone fragments 10 and 11. The rings 8 and 9 and the head in the form of an open ring. Split 7 are located in the slots

2 and 3 plates 1 with the possibility of jamming.

The device is made of a material with a shape memory, for example, an alloy based on titanium nickelide, which ensures the restoration of the specified shape of the device in operation.

After splicing the fracture, the device is removed in parts by re-cutting the heads of the pins 7 and the ends of the projections 5 and 6 of the plate 1 with a flexible saw.

Claims (1)

Invention Formula Osteosynthesis device made of a material with an effect than the position after the preliminary shape of the mold, containing the outer plaster of the protrusions 5 and 6, reducing the ring 4 and bringing the ends 8 and 9 of the cotter pins 7 in a cooled state. The device is used as follows. Under the protrusions 5 and 6 of the plate 1 and the ends 8 of the removal of the device, the outboard plate and 9 cotter pins 7 (respectively, grooves 2 and 3) are made with longitudinal grooves on both sides of the bridge under the fixing elements, the trepanning holes are made. cops made in the form of pin. tina with protrusions on the ends, bent towards each other, and a jumper in the form of an oval-shaped ring, and fixing elements, characterized in that, in order to reduce the morbidity during installation and and four Plate 1 of the device is cooled to a temperature below 10 ° C, for example, by spraying with chloroethyl for 5-10 seconds, then cooled plate 1, ring 4 of which is reduced, and protrusions 5 and 6 are located perpendicular to plate 1, are placed on juxtaposed bone fragments 10 and 11. After 20-30 s in connection with the effect of formation, which occurs with the contact heating of titanium nickelide to 35 ° C plate 1 tends to accept a given with converged ends 8. In the process heating the splints 7 to 30 ° C, ends 8 and 9 are diluted in opposite directions and wedged in grooves 2 and 3 and in the medullary canal. In this way, a reliable compression osteosynthesis fragments 10 and 11 are provided. After splicing the fracture, the device is removed in parts by re-cutting the heads of the pins 7 and the ends of the projections 5 and 6 of the plate 1 with a flexible saw. Invention Formula Osteosynthesis device made of a material with an effect  the memory of the form, containing the external plating of the device, the external plate is made with longitudinal grooves on both sides of the jumper for fixing elements made in the form of a cotter pin. tina with protrusions on the ends, bent towards each other, and a jumper in the form of an oval-shaped ring, and fixing elements, characterized in that, in order to reduce the morbidity during installation and FIG. 2 H FIG. t ъ eight 1011 Phage. five 9 Fi2.6