SU759096A1 - Front spondylodesis method - Google Patents

Description

(54) FORWARD SPONDYLODEZA METHOD

I

The invention relates to medicine, in particular to methods of surgical treatment of diseases of the spine.

There is a method of anterior spinal fusion by forming a perceptive bed with the subsequent introduction of graft 1 into it.

However, this method does not ensure reliable fixation of the graft, which can lead to its displacement in the postoperative period.

The purpose of the invention is to prevent the displacement of the graft in the postoperative period.

This goal is achieved by the fact that during the implementation of the method of anterior spinal fusion, the bed and graft are conically shaped with threads on the mating surfaces and the graft is screwed into the bed.

FIG. 1 shows a cutting element for treating the bed of a device for carrying out the method of anterior fusion; in fig. 2 - the same for transplant treatment; in fig. 3 is a diagram of the treatment of a bed in the implementation of the method of anterior spinal fusion; in fig. 4 is a thread cutting pattern in a box; in fig. 5 is a disc residue removal circuit; in fig. 6 scheme of screwing the graft into the bed.

The method is carried out as follows.

On adjacent vertebrae, a cylindrical cutter 1 (whose diameter is equal to the smaller diameter of the tapered part of the cutting element 2 for treating the bed) is made up of a cylindrical bed (Fig. 3). Then, the cutting element 2, rotating the knob-knob 3, gives the bed a conical shape, while simultaneously tapering the threads on its surface with the help of the cutting part 4 (Fig. 4). After that, windows 5 of the cutting element 2 are installed against the intervertebral slit and a disk is removed through windows 5 with a sharp spoon (Fig. 5). In this case, the conical surface 6 of the element 2 is in close contact with the spongy surface of the defect in the vertebrae, and it is bleeding.

Claims (1)

In the harvested cylindrical graft, grooves are made, and inserting the grafts 7 of the handle rod 3 into them, the graft is inserted into the cavity of the cutting element 8 for processing the graft. Rotating the knob 3, cut a tapered thread on the transplant. After that, the graft is inserted into the replaceable bed and screwed into the tapered hole with a tapered thread with the help of a handle stem (Fig. 6). If necessary (additional fitting, etc.), the graft can be unscrewed from the bed, and then re-screwed into it. The proposed technique of anterior stabilizing spinal fusion can significantly reduce complications due to the prevention of graft migration in the postoperative period. The bed rest of patients for the prevention of graft displacement is reduced to 5-6 weeks. Observations on the large-scale, operated by the new method, did not reveal a single case of complications due to 1 transplant migration. The procedure of fitting the graft (removal of the protruding part, etc.) is greatly facilitated due to the possibility of free removal of the graft by unscrewing it from the bed. Surgical blood loss from bone wounds is reduced by an average of 60-70%. Formula of the invention The method of anterior spinal fusion by forming a receptive bed with the subsequent introduction of a graft into the negro, characterized in that, in order to prevent displacement of the graft in the postoperative period, the bed and the graft are conically threaded onto the matching surfaces and the graft bed. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 183902, cl. A 61 B 17/16, 1966. Ф (/г./