SU1528471A1 - Arrangement for intramedullar osteosynthesis - Google Patents

Abstract

The invention is intended to improve the accuracy of alignment of bone fragments. The device contains a locking element 1 connected to a hollow conductor 2, and a reposition assembly made in the form of a rod 3 and opposite pole magnets 4, 5. The magnet 4 is mounted in the recess 6 of the rod 3. The magnet 5 is installed on the end of the conductor 2, having the possibility of the recess 6 of the rod 3. The locking element 1 is made in the form of a tube that can move along a conductor 2, and the contact surface of the magnets 4, 5 is made spherical. 2 Il.

Description

sd to

00

 The invention relates to medical technology, namely to traumatology and orthopedics.

The aim of the invention is to improve the accuracy of combining bone fragments.

FIG. 1 shows an intramedullary osteosynthesis device installed in femur fragments with longitudinal-transverse alternation; in fig. 2 - the same, with docked opposite ends.

The device contains a fixing element} 1 t 1 connected to the hollow conductor 2, and a reposition assembly made in the form of a rod 3 and opposite pole magnets 4 and 5. The magnet 4 is installed in the recess 6 of the rod 3, the magnet 5 at the end of the conductor 2, having a possibility of being located in the recess 6 of the rod 3. The locking element 1 is made in the form of a tube, having the possibility of moving along the conductor 2. The contact surface of the magnets 4 and 5 is spherical.

The device is used, for example, for the femur as follows: M.

The area of the greater trochanter is exposed and the coaxial entrance hole is drilled into the bone marrow canal, and the fragment of the femur is drilled under the fixing element I B. This hole is inserted into the shaft 3 of the device, immersing it in the bone marrow channel to the fracture region .

(On the side of the knee joint in the dorsal fragment of the femur, a similar treatment is performed by drilling the bone-cerebral canal under the fixing element 1. The end of the conductor 2 with the magnet 5 is inserted into it.

Lie opening of the fracture area, one, 1 fat coarse reposition of the femoral bone jaws, after which conductor 2 is pushed further to the fracture area 7 until the magnetic fields of magnets 4 and 5 interact, the poles of which are mutually opposite and provide, on a measure of saturation, the increasing force of attraction. In this case, conductor 2 is like 6o, iee is light and thin under the action of b, 1

0

five

0

five

0

five

0

The magnetic attraction moves along the bone-medullary canal of the distal spine and enters with its end into the recess 6 of the rod 3. The magnet 5 is firmly connected to the magnet 4, ensuring the preliminary fixation of the fragments. Next, through the hole on the side of the knee joint, the fixing element I is inserted into the bone-marrow canal in the form of a tube, which is worn on the device conductor 2, and is advanced to the fracture area before joining with the end of the rod 3.

Due to the TciTO, that the outer diameter of the fixing element 1 of the lisch is somewhat larger (by .1 2 mm) of the outer diameter of the rod 3, and their face edges are rounded off (“filled up with the inside”), the fixing element 1, not touching the edge of the bone bone, through the fracture area, pushing the docked rod 3 and conductor 2 out of the holes 11 of the greater trochanter. After firm fixation by the fixing element 1 of the re-, the 1st femur and the reposition, the device is pulled out of the medullary canal beyond the shaft 3 through the proximal opening in the thigh, and the conductor 2 through the distal one. Wounds in soft tissues infect and proceed to rehabilitation measures.

The use of the device allows the holding of the fixing element through the area of the fracture without cutting soft tissue in this area.

Claims (1)

Invention Formula A device for intramedullary osteosynthesis, comprising a fixing element associated with a zero conductor, and a reposition assembly, characterized in that, with a chain. First of all, the alignment of bone detachments is new, the reposition assembly is made in the form of a rod and opposite pole magnets, one of which is installed in the recess of the rod, and the other at the end of the conductor, which can be positioned in a corner (the rod, the fixing element having the ability to move along a conductor, and the contact surface of the magnet is spherical.