SU1731191A1 - Method for osteosynthesis of oblique diaphysial fractures - Google Patents

Abstract

The invention relates to traumatology and medical technology and can be applied to oblique diaphyseal fractures of the tubular bones. The purpose of the invention is the prevention of postoperative complications. The fragments are repositioned; for this, the fragments are fixed with canal screws in the longitudinal and transverse directions, and in one fixture are inserted, and through the other, drugs are removed. The method is implemented using a device that contains a drill, a reamer, screws. The screw thread profile provides drainage capability. In the process, channels are formed through both cortical channels, clamps with axial through channels are inserted into them, drugs are inserted into one clamp, and drugs are brought out through the other. 2 sec. f-ly, 3 ill.

Description

WITH

with

The invention relates to methods for osteosynthesis of diaphyseal fractures, for example, long tubular bones, and devices for their implementation, used in orthopedics and traumatology for bone surgery.

The purpose of the invention is to prevent post-operative complications, as well as to ensure the possibility of long-term drainage in the area of the fracture.

Figure 1 shows the structure of the device; Figure 2 shows the screw structure; in FIG. 3, view A in FIG. 2.

The device contains a drill 1, which, in addition to the cutting end 2, has a threaded end 3, a drill 4, a reamer 5, screws 6, made with a semicircular head 7, slotted 8, rod 9, passing into an axial channel with a wall 10 with through radial holes 11.

The outer 12 and inner 13 bands have threads for screwing a drill into the bone.

The thread profile is described by the system of equations (via intermediate parameter 0):

V X-X0 f -d + 0.5a-f2; {Y - Yo f2-6 + 0.5 a-f.

where X, Y, X0, Yo are the flowing and initial coordinates of a rectangular plane Cartesian system XOY;

a 0.5 (cos 2 in - cos 2 b);

d 0, (0 - 00) tsin 2 in - sin 2,

in arctg dy / dx arctg Y and in arctg Y0, the first derivative of Y with respect to X;

Yo - the initial value of the first derivative of Y with X at points with coordinates X0,

Yo

VI WITH

about

The specified screw thread profile provides long drainage.

Holding one end of the drill with your hand (figb), screw onto the second threaded end released from drill 4 (figv), scan 5. Then with the help of drill 4 expand bone 5 with scan 5 (fig.1g) returning (fig. 1b, c) the ends 2 and 3 of the drill 1 for a similar replacement of the sweep 5 with the screw 6 (fig. 1d), hand screw the screw (with a screwdriver) in both fragments in the direction of the drill.

Repeat the operation for each subsequent screw 6. Insert and screw the needle of the syringe or dropper (not shown) into the internal drilling of screw 6 and remove the tube from drilling of screw 6. Wash the bone cavity with the medicinal solution.

Example. Patient O., 27 years old, with a closed fracture of the tibia in the middle third and fibula in the upper third with displacement of fragments in the urgent order superimposed skeletal stretching system for the heel area with a load of 5 kg. On the 3rd day after the injury, reposition of the fragments was performed simultaneously. Through a puncture of soft tissues with the help of a drill, a channel is formed in the bone that passes through both cortical layers. Fragments of the tibia are fixed with two screws. Into the axial hole of one screw

A nipple tube was inserted, to which a drainage intracystic system was connected. The drainage of the bone-brain canal was carried out over 5 days. On the 6th day, the patient was discharged in a plaster cast for outpatient treatment. Disability restored after 14 weeks.

Claims (2)

1. The method of osteosynthesis of oblique diaphragous fractures of the tubular bones by matching fragments, holding clamps through both cortical layers, characterized in that, in order to prevent postoperative complications, the fragments are fixed with canals in the longitudinal and transverse direction, and through another drug withdrawal. 2. A screw for osteosynthesis of oblique diaphragmatic fractures of the tubular bones, comprising a screw body with a conical guide end and a round head with a slot, external and internal threads from the guide end, characterized in that, in order to enable long-term drainage of the fracture area , the screw is made with an axial channel and is perforated through the holes, and the screw thread has a wave-like profile with pointed internal peaks and rounded on the screw body. , Editor I. Derbak Fig.Z Rig. 2 Compiled by N, Korableva Tehred M. Morgental Corrector M. Maksimishinets napro ste paunbofa 12 Vida jJMMjjjjJ ..y Fig.Z