Fusionless vertebral physeal device

摘要

An intravertebral device for modulating vertebral growth without changing spinal mobility or compressing the intervertebral disc. By implanting the device around the vertebral growth plate, on the convex side of the curvature, a compression is induced on one side of the growth plate during the vertebral growth. This local growth modulation decreases significantly the vertebral wedging and corrects the global deformity of the spine. The device provides a minimally invasive and fusionless way of correcting spinal curvatures while preserving the intervertebral disc.

主权项

1. A spinal growth modulation device, comprising: at least a first insertion part having a bone fixation-free body extending from a proximal end at a first extremity of the bone fixation-free body to a distal end at an opposed second extremity of the bone fixation-free body, said insertion part being adapted for insertion between a first epiphyseal growth plate of a growing vertebral body and an adjacent intervertebral disk on a first side of the spine, said insertion part adopted to be implanted on a peripheral portion of the growth plate upon being inserted; and an anchoring part, said anchoring part being adapted to be anchored in the vertebral body; wherein the insertion part and the anchoring part are rigidly interconnected to one another, and wherein said bone fixation-free body has a first surface and a second surface, a thickness of said insertion part being defined between said first and second surfaces, the thickness of said insertion part decreasing continually from said proximal end to said distal end, said first surface being adapted to be in contact with the growth plate and said second surface being adapted to be in contact with the adjacent intervertebral disk when said distal end of said insertion part is inserted between the growth plate and the adjacent intervertebral disk.