FR3084829A1 - THE INVENTION RELATES TO AN EXTERNAL FIXER FOR TREATING AN OPEN FRACTURE AT THE EPIPHYSIS LEVEL. - Google Patents

Abstract

The invention relates to an external fixator for treating an open fracture at the level of the epiphysis (neck of the femur, femoral condyle, upper third of the tibia and head of the humerus). It consists of two metal rods. 1 single rod with a hemisphere end (empty) and the other with a solid hemisphere end and a perforated plate fixed on the other end. Pins can be attached to the single rod using the cylinders, which will allow multiple pins to be attached to the shaft. The perforated plate allows to fix up to 8 pins on several levels and on a small space, which allows to fix pins on the epiphysis.

Description

Description [0001] This kind of fracture is extremely rare, which is why there is no technical solution to treat this kind of fracture. There are only fixators to treat external fractures in the spinal column.

The fixer according to the invention overcomes this problem. It indeed has two main rods connected to each other by one of their ends. A simple rod to which several fixing devices can be inserted, making it possible to fix pins along the rod at the level of the diaphysis. There is no fixed number and place for the pins, the fixing devices can be inserted, removed and can slide along the rod according to the surgeon's needs. On the other rod, at its end is welded a plate having 16 holes. 8 holes on the surface of the plate, in each hole you can insert a pin which will be fixed with a bolt screwed on the edge of the plate (at the height of the hole). Theoretically 8 pins can be fixed at the level of the epiphysis, the choice of holes depends on the fracture. It is therefore possible to fix several pins in a small space on several levels.

The accompanying drawing illustrates the invention:

Figure 1 shows in section the device of the invention.

Referring to this drawing, on the end of the simple rod (4) is welded an empty hemisphere which arises on the end of the other rod (2) which is in the form of a solid hemisphere. A piece (3) is fixed to the empty hemisphere with a bolt to form a joint.

The fixing device (5) has 4 holes, a main one which allows it to insert the single rod (4) into the fixing device, which will allow the latter to slide along the simple rod. To fix the fixing device on the rod, simply tighten the bolt in the adjacent hole (closest to the rod). Another hole allows you to insert a pin into the fixing device, to fix the pin on the fixing device, just tighten the bolt in the adjacent hole (closest to the pin).

The fixing plate (1) has 8 holes on its surface, in each hole you can insert a pin, to be able to fix an inserted pin, simply tighten the bolt adjacent to the hole in which the pin is inserted.

Claims (5)

1j External orthopedic fixator characterized in that it comprises two rods, a single rod (4) and a rod (2) to which is fixed a plate (1) at the end, which are connected together by one of their ends 2) external orthopedic fixator according to claim 1 characterized in that the simple rod (4) has at its end an empty hemisphere, and several fixing devices (5) are fixed to the rod 3) External orthopedic fixator according to claim 1 characterized in that the rod (2) has at one end a solid hemisphere and on the other end a perforated plate (1). 4) external orthopedic fixator according to claim 3 characterized in that the perforated plate (1) has 16 holes, 8 holes on the surface of the plate for inserting the necessary pins and 8 holes for fixing each pin by screwing A bolt 5) external orthopedic fixator according to claim 2 characterized in that the fixing devices (5) each have 4 holes, a hole for sliding the fixing device along the rod (4) by inserting the rod into the hole , one allowing to fix the fixing device on the rod by screwing a bolt in the hole adjacent to the rod, another allowing to insert a pin into it and another allowing to fix the pin by screwing a bolt in the adjacent hole to the spit.