Device for surgical displacement of vertebrae

Abstract

Device for surgical displacement of vertebrae, which is composed of two parts co-working in a sliding way: a sliding part (1) with an internal thread and a carrier part (3), and also a driving element (4) with an external thread which is located between the parts. The driving element (4) is provided with a head (5). The sliding part (1) of the device is equipped with a threaded guideline (2) cooperating with the driving element (4) and a seat of a diameter corresponding with the head's (5) diameter and length greater than the head's (5) length. The carrier part (3) of the device has a cylindrical seat (12) of a diameter and length corresponding with the head's (5) diameter and length. The sliding part (1) and the carrier part (3) are provided with cooperating: at least one shaped element (8) and shaped element (9), which form a lock preventing separation of both parts in the direction perpendicular to the device longitudinal axis.

Description

technical field

[0001] The present invention relates to the surgical displacement of vertebrae, which has application in the surgical treatment of vertebral dislocations. Literature data show that on average 10% of patients treated for back pain experience vertebral slippage. The lesion can cause significant disability in juveniles and adults. When neurological symptoms and / or pain appear, or even increase, surgical treatment of vertebral dislocations is required even after previous conservative treatment. In medical practice to date, the most common treatment involves achieving spinal fixation of the spine through bony fusion at sliding levels. Vertebrofusion in itself is not always a sufficient means and does not bring positive results in the form of: restoration of the proportions in the height of the intervertebral disc space, thus reconstruction of the correct geometry, reduction of postural deformations, removal of pain discomfort, biological Restoration of mechanical...

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