RU36960U1 - NEEDLE FOR FIXING BONE FRACTURES IN LOWER JAW FRACTURES - Google Patents

Description

Knitting needle for fixing bone fragments during fractures of the angle of the lower jaw.

The utility model relates to medicine, namely to surgical dentistry.

Issues of maxillofacial traumatology continue to be relevant at the present time. In surgical dentistry for various injuries, fractures of the lower and upper jaws, fractures of the facial skeleton, deformation of the jaw and bone grafts associated with this deformation, it is necessary to use operational methods of immobilizing bones, bone fragments and their combinations and devices necessary for its implementation.

There are various methods for intraosseous and osseous operative fixation of fragments of the lower jaw and their combinations. A device fixing fragments can connect their ends, crossing the fracture gap, passing inside the bone or superimposed on bone fragments at a distance from the fracture gap and is fixed outside the bone wound.

Among such devices, the most common is the Ermolaev and Kulagov apparatus (ЕК-1, ЕК-2), proposed by the authors as an analogue. It consists of spokes inserted into the bone fragments percutaneously with a drill, a frame of various shapes and devices for attaching these parts. // T.G. Robustova, I.S. Karapetyan et al. Surgical dentistry., Publishing House "Medicine, M., 1996, pp. 40-40-407 //.

However, a definite drawback of this device can be considered that with a quick rotation of the spoke, a bone burn is possible, the possibility of rotation of the spoke, etc. is not excluded.

As a prototype of the claimed utility model, the authors propose Kirschner knitting needles. //T.G. Robustova, I.S. Karapetyan et al. Surgical dentistry. Publishing house "Medicine, M., 1996, p. 40402 //.

ZS031J7503

The Kirschner needle is a piece of metal wire made of medical steel with a length of 395 mm and a diameter of 2 mm with a shank 29 mm long flattened on both sides and a tip 7 mm long flattened on one side, the end of which has the shape of an equilateral triangle with a side length of 2 mm.

Kirchner spokes are inserted into both fragments, exposing them or percutaneously using a drill, drill or special apparatus. The spoke well holds fragments from displacement in the vertical plane, but does not exclude their rotation. To prevent this, 2 knitting needles are sometimes introduced, which complicates the method.

Specific disadvantages of Kirchner spokes are:

- insecure fixation

-possibility of knitting needles

- Due to the insertion of a spoke with a drill at high speeds, a bone burn is possible.

The authors propose their own knitting needle for immobilization of bone fragments during fractures of the angle of the lower jaw. A fracture of the lower jaw in the region of the corner most often occurs through the hole of the third large molar tooth or between it and the second molar, the smaller fragment is shifted upward, inward and rotates along the axis: the base of the corner is outward, the front edge of the branch is inward. The displacement of fragments largely depends on the fracture gap. With its vertical arrangement, with the direction of the fracture anterior and inward, the displacement of the small fragment will be more significant than with the direction of the bevel backward and inward.

The spoke is a piece of metal wire made of medical steel grade 12 X18H10T and consists of a shank (1) and a working part (2). The total length of the spoke is 120 mm, the diameter is 2 mm. The working part of a 15-mm-long needle has a conical shape with a thread that ends with a self-tapping screw (3) 1.7 mm long. Shank length is 105 mm. The needle is inserted into the trepanation canal.

.

drill at low speeds clockwise. The needle is fixed in

fragment of the jaw with a shank preheated on an alcohol lamp in

for 10 minutes. After consolidation of fragments of the jaw of the knitting needle

unscrewed.

The advantages of the proposed knitting needles for immobilization of corner fragments

lower jaw are:

-increase in stability and reliability of fixation of bone fragments;

-fixation in bone fragments;

-decrease in the number of postoperative complications;

-improving the quality and results of treatment;

-reduction of treatment.

Claims (1)

A needle for fixation of bone fragments during fractures of the angle of the lower jaw, consisting of a working part and a shank, characterized in that the total length of the spoke is 120 mm with a diameter of 2 mm, and the working part of the spoke 15 mm long has a tapered shape with a thread, ending with a self-tapping screw 1, 7 mm, and the length of the shank is 105 mm.