RU79032U1 - DEVICE FOR INTRAMEDULAR OSTEOSYNTHESIS - Google Patents

Abstract

The utility model relates to medicine, namely to traumatology and orthopedics, and can be used to treat diaphyseal fractures of the forearm bones. The device is made in the form of a rod of a U-shaped section with pointed ends and conical holes for latches made along its entire length. As a result, during repositioning of bone fragments of the forearm, interfragmental compression is maintained by blocking the rod, held perpendicularly through both cortical layers of the bone and the hole of the rod, with retainers.

Description

The utility model relates to medicine, namely to traumatology and orthopedics, and can be used to treat diaphyseal fractures of the forearm bones.

A device known to the Kazarezovs for the treatment of bone fractures (see patent No. 21118132, RU, class A61B 17/58), which is a spoke, triangular section.

The disadvantage of this device is the inability to block, as well as the loss of the fragments specified during reposition, interfragmental compression.

A device for intraosseous osteosynthesis is also known (see patent No. 2033767, RU class А61В 17/58), which is made in the form of an all-metal rod having a rectangular cross-section and openings at the ends located in a checkerboard pattern.

The disadvantage of this device, taken as a prototype, is the possible displacement of bone fragments during osteosynthesis along the length, in addition, the quadrangular section of the rod does not allow to take into account the features of the bone marrow channel of the forearm bones.

The objective of the claimed utility model is to improve the quality of treatment.

The problem is solved due to the fact that in the device for intramedullary osteosynthesis, made in the form of a rod with holes for retainers, the rod has a V-shaped section, and the holes are located along its entire length. Both ends of the rod are made pointed. The holes are conical in shape.

Using the claimed utility model will allow to save, obtained as a result of open reduction, interfragmental compression of fragments, to block fragments near the fracture site. With an oblique fracture, it will allow you to connect both fragments with one clamp. The U-shaped section of the rod will allow more accurate modeling of the design and take into account the features of the bone marrow canal. Thinning edges allow firmly fixed in metaphyses.

The utility model is illustrated in the drawing, which shows:

figure 1 - General view of the device;

figure 2 - Section aa in figure 1;

figure 3 - Fixation of the rod inside the bone marrow canal.

The device comprises a rod 1 (Fig. 1), which has a V-shaped cross section having holes 2 (Fig. 2) made in the form of cones. The holes are made evenly along the entire length of the rod. Both ends of the rod 3 (figure 1) are made pointed. The device contains clamps 4 (figure 3), which are fragments of Kirschner spokes with thrust pads.

The claimed device operates as follows.

Rod 1 (FIG. 1) is inserted into the channel. Using a reponent device and creating the necessary interfragmental compression of the fragments, alternately, perpendicular to the bone, fixatives are introduced. The wound is sutured tightly. The protruding areas are located under the skin, which allows them to be removed on an outpatient basis as the fracture consolidates.

Claims (3)

1. Device for intramedullary osteosynthesis, made in the form of a rod with holes for retainers, characterized in that the rod has a U-shaped section, and the holes are located along its entire length. 2. The device according to claim 1, characterized in that both ends of the rod are made pointed. 3. The device according to claim 1, characterized in that the holes are conical in shape.