Bionic artificial vertebra with capacity of motion and capable of being implanted conveniently

Abstract

The invention discloses a bionic artificial vertebra with capacity of motion and capable of being implanted conveniently, and belongs to the technical field of medical apparatus for orthopedics. According to the technical scheme, the bionic artificial vertebra is composed of an upper joint body and a lower joint body, the periphery of the upper joint body and the periphery of the lower joint body are each composed of an annular titanium mesh supporting bone grafting ring, the upper joint body and the lower joint body are connected with a repaired vertebra, the lower end face of the upper joint body and the upper end face of the lower joint body are provided with an arc-shaped depression and an arc-shaped protrusion respectively, the curve radian of the arc-shaped depression is matched with the curve radian of the arc-shaped protrusion, and the circumference of the arc-shaped depression and the circumference of the arc-shaped protrusion are each provided with four ball sockets with small diameters, wherein each two ball sockets are opposite to each other, and each pair of opposite ball sockets with the small diameters are embedded with movable balls. According to the bionic artificial vertebra with the capacity of motion and capable of being implanted conveniently, the upper joint body and the lower joint body take the arc-shaped protrusion as a main shaft, the balls in the ball sockets on the periphery are taken as movable shafts, and protraction, retroflexion, left side bend, right side bend and rotation movements of vertebra segments can be completed; the height and flexibility of comminuted and blow-out vertebra fractures with different degrees can be effectively recovered, fixation is firm, and postoperative complications are few.

Description

technical field [0001] The invention relates to a bionic artificial vertebral body, which belongs to the technical field of orthopedic medical instruments. Background technique [0002] In orthopedic trauma, spinal fractures and dislocations account for 4.8% to 6.6% of total fractures and dislocations. Among them, spinal compression fractures account for 70% to 80% of all vertebral fractures, and most of them occur in the thoracolumbar segment, accounting for about 82.2%. Spinal fractures are more common in young and middle-aged men, and are mostly caused by indirect external forces. However, due to their own osteoporosis, elderly patients often have spinal compression fractures without obvious external force or only slight external force, and most of them are simple vertebral compression fractures. [0003] With the aging of the population, the incidence of vertebral fractures in the elderly is increasing year by year. Spinal compression fractures can be combined with sp...

AI Technical Summary

Problems solved by technology

Therefore, the currently used vertebral body reconstruction or adjacent vertebral body fusion cannot achieve satisfactory therapeutic effects, which has become a difficult problem in vertebral body surgery, and it is very necessary to improve it.

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