Prosthetic intervertebral discs

Details Prosthetic intervertebral discs Prosthetic intervertebral discs

A - Human Necessities

61

F

A61F 2/44 (2006.01)

Patent

CA 2621154

Prosthetic intervertebral discs, systems including such prosthetic intervertebral discs, and methods for using the same are described. The subject prosthetic discs include upper and lower endplates separated by a compressible core member. The subject prosthetic discs exhibit stiffness in the vertical direction, torsional stiffness, bending stiffness in the saggital plane, and bending stiffness in the front plane, where the degree of these features can be controlled independently by adjusting the components, construction, and other features of the discs.

L'invention concerne des disques intervertébraux prothétiques, des systèmes comprenant ces disques intervertébraux prothétiques et des procédés d'utilisation de ces disques intervertébraux prothétiques. Les disques prothétiques selon l'invention comprennent des plaques d'extrémité supérieure et inférieure séparées par un élément principal compressible. Les disques prothétiques selon l'invention selon l'invention présentent une rigidité dans la direction verticale, une rigidité en torsion et en flexion dans le plan sagittal et une rigidité en flexion dans le plan frontal. Le degré de ces caractéristiques peut être ajusté indépendamment en réglant les composants, la construction et d'autres caractéristiques des disques.

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