Controlled artificial intervertebral disc implant

Details Controlled artificial intervertebral disc implant Controlled artificial intervertebral disc implant

A - Human Necessities

61

F

A61F 2/44 (2006.01) A61F 2/00 (2006.01) A61F 2/08 (2006.01) A61F 2/28 (2006.01) A61F 2/30 (2006.01) A61F 2/40 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2495373

The invention relates to an artificial intervertebral disc for placement between adjacent vertebrae. The artificial intervertebral disc is preferably designed to restore disc height and natural disc curvature, allow for a natural range of motion, absorb shock and provide resistance to motion and axial compression. Furthermore, the intervertebral disc may be used in the cervical, the thoracic, or the lumbar regions of the spine. The artificial intervertebral disc may include either singularly or in combination: an interior including at least one spring member preferably incorporating a arcuate surface member, a flexible core, the flexible core preferably being a slotted core, a ring spring, a winged leaf spring, or a leaf spring, or. The articulating member preferably being attached to one of the endplate by an intermediate shock absorbing element.

L'invention concerne un disque intervertébral artificiel destiné à être implanté entre des vertèbres adjacentes, visant de préférence à rétablir la hauteur de disque et la courbure de disque naturelle, qui offre les fonctions suivantes: amplitude de mouvement naturelle, absorption des chocs, et résistance au mouvement et à la compression axiale. De plus, on peut utiliser ce disque dans les zones cervicale, thoracique ou lombaire. Le disque peut comprendre, isolément, ou en combinaison: un intérieur qui comporte au moins un ressort ayant de préférence un élément à surface courbe, un noyau flexible de préférence à fentes, un ressort annulaire, un ressort à lames ailées, ou un ressort à lames. De préférence, l'élément d'articulation est fixé à l'une des plaques d'extrémité par un élément intermédiaire d'absorption des chocs.

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