SU1419690A1 - Fixative for osteosynthesis - Google Patents

Abstract

The invention is intended for traumatology. The purpose of the invention is to reduce the trauma of soft tissues. The retainer contains a flexible thread 1, at one end of which an emphasis is made in the form of a ring 2 fixed by means of the knot 3 on the thread 1. At the ends of the flat spiral spring 4 there are holes 5,6. The opening 6 is located in a plane perpendicular to the plane of the spring 4. The thread 1 passes through the opening 5 and is fixed in the opening 6 by means of the assembly 7. The spring 4 is made of a material with a shape memory that restores the originally defined shape of the spring 4 in the working position after preliminary twisting springs at 10 ° C. 3 il. about

Description

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The invention relates to medicine, namely to traumatology.

The purpose of the invention is to reduce the trauma of soft tissues.

FIG. 1 shows the fixture for osteosynthesis, general view; in fig. 2 - the same, in the working position with one channel in the bone; in fig. 3 clamp for osteosynthesis in the working position with b. X channel a.x in the bone.

The fixture for osteosynthesis contains a flexible thread 1, for example, a lavsan, at one end of which there is a stop, for example a ring 2, fixed with the help of knot 3 on the thread I, and on the other - a tension mechanism in the form of a flat spiral spring 4 made from a memory material forms. At the ends of spring 4, holes 5 and 6 are made, and hole 6 at the outer end of spring 4 is located in a plane perpendicular to the plane of spring 4. Thread 1 passes freely through hole 5 and is fixed in hole 6 by means of unit 7. Execution of spring 4 from a material with a shape memory, for example, from a titanium titanium grade TH-10, restores the initially specified shape of the spring 4 in the working position after first twisting the spring n) and a temperature below 1 () ° C.

Usg1) is used as follows.

In the 15th stage, osteosynthesis of the tubular bone is compared with bone from. hooks and in the transverse direction bore through the canal for lavsan thread 1 (Fig. 2), with the possibility of rotational displacement of KOCTHOi o fragments for drinking 1, two channels are drilled through (phi1. 3). Spring 4 irrigate chlorine: ty. Scrap for 5 K) s, cooling it to a temperature below liY - C. cKpv

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holding the ends, sling, licking the holes 5 and 6. The lavsan thread 1 is pulled through the conduit (s) in the bone fragments by means of a metal conductor, the thread 1 from the side of the ring 2 is tied into the node 3, passed through the holes 5 and 6, they pull in and knot into the knot 7. Excess outer portions of the thread 1 are cut. After 20–30 s, due to the shaping effect that occurs upon contact heating of titanium nickelide to + 35 ° C, the spring 4 tends to take the desired (i.e., initial) shape. In this case, the spring 4 is unwound, providing tension on the thread 1, thus ensuring reliable compression osteosynthesis of bone fragments.

After adhesion of the fracture, the fixative is removed as follows.

The ring 2 and the spring 4 are exposed, the node 3 is cut, for example, the ring 0 2 is removed and, while holding the spring 4, the polyester 1 is removed from the bone canal or the section of the thread 1 located outside the bone fragment is cut off and the ring 2 and spring 4 are kept , remove the parts of the thread 1 from the bone channels.

Claims (1)

Invention Formula five A clamp for osteosynthesis, containing a flexible thread, at one end of which a stop is fixed, and at the other a tension mechanism, characterized in that, in order to reduce the trauma of soft tissues, the tension mechanism is made in the form of a flat spiral spring of material with memory of the form, having at the ends of the hole 10D thread, with the hole on the outer to (.1nce spring is located in a plane perpendicular to the spring plane FIG. g / J 2 7 6 / dzie.Z