RU50110U1 - IMPLANT FOR CONNECTING CALLS OF CALLS - Google Patents

Abstract

A useful model - an implant for connecting vertebral bodies - is aimed at maintaining the function of the spinal column after discectomy of various localization, which is achieved by its implementation in the form of a spiral made of a material with elastic properties.

Description

A useful model - an implant for the functional connection of vertebral bodies - relates to the field of medical technology and can be used in the treatment of patients with diseases and injuries of the spinal column, leading to insolvency of the intervertebral discs.

Known bracket for osteoplasty, made in the form of an open ring of material having a shape memory effect. The bracket consists of three arcuate curved branches, between which there are curved protrusions, and at the ends are flattened legs, the protrusions and legs extending perpendicular to the plane of the open ring and directed towards each other (RF Patent No. 2098038, publ.: 12.10.97.).

The specified bracket is designed to capture and stable retention of the transplant introduced into the defect and, due to design features, cannot be used as an independent implant replacing the defect.

A known implant for connecting vertebral bodies, containing a spiral equipped with spikes at the ends and made of material with a shape memory effect (Bersnev V.P., Davydov E.A., Kondakov E.N. Surgery of the spine, spinal cord and peripheral nerves. . - St. Petersburg: "Special Literature", 1998.-p.172-173).

However, since the spiral made of titanium nickelide (NiTi) takes a certain, unchanging shape after heating, this implant provides only a stabilizing connection to the vertebral bodies, which reduces the functional result of its use: there is a decrease in the cushioning properties of the vertebral column, tilt possibilities are limited, etc. .

The objective of the utility model is the development of an implant for connecting the vertebral bodies, ensuring the preservation of the function of the spinal column and expanding indications for its use.

This problem is solved by the fact that in the implant for connecting the vertebral bodies, containing a spiral equipped with spikes at the ends, the spiral is made of a material with elastic properties.

The implant for connecting the vertebral bodies is illustrated by the description and diagrams on which are shown:

Fig 1 - implant for connecting the vertebral bodies, General view;

Figure 2 - installation diagram of the implant along the axis of the connected vertebrae in the absence of deformation of the spinal column;

Figure 3 - installation diagram of the implant with a shift from the axis of the vertebrae in the presence of deformation of the spinal column.

The implant for connecting the vertebral bodies (Figure 1) contains a spiral 1 equipped with spikes 2 at the ends and made of a biologically inert material with elastic properties.

An implant for connecting vertebral bodies is used as follows.

After anesthesia and treatment of the surgical field, one of the known techniques provides access to the vertebral bodies at the level of a pathologically altered portion of the spinal column. With the help of the necessary tools, discectomy and / or careful curettage of non-viable tissues are performed. Following this proposed implant, the bodies of the adjacent vertebrae are connected, for which the spiral 1 is inserted into the interbody defect zone and the spikes 2 at its opposite ends are immersed in the bodies of the corresponding vertebrae. In this case, based on the characteristics of the pathology - the absence or presence of concomitant deformation of the spinal column - the implant is installed, respectively, either along the axis of the connected vertebrae (Figure 2), or it is displaced in the direction of concavity of the deformation (Figure 3). In the first case, an implant is used, the diameter of the spiral 1 of which corresponds to the diameter of the bodies of the connected vertebrae; in the second, an implant with a spiral diameter of 1 smaller than the diameter of these vertebrae. If necessary, based on the localization of the level of discectomy and implant placement, the operated spinal column section is additionally stabilized by known techniques using an external fixation device for 1.5-2 months. The operation is completed by suturing the wound, applying bandages and performing control radiography. After dismantling the device for 2-3 months, the patient is shown wearing a corset.

The proposed implant for connecting the vertebral bodies was used in the neurosurgery department of the RTC "WTO" named after Acad. G.A. Ilizarova. Its use in the treatment of patients with spinal pathology has shown the possibility of maintaining the function of the spinal column after discectomy of various localization.

Claims (1)

An implant for connecting vertebral bodies, containing a spiral equipped with spikes at the ends, characterized in that the spiral is made of a material with elastic properties.