Spinal Kinetics, Inc.

Ultra-kinetics, Inc.

Leland Stanford Junior University

Sung Kyu Ha

Daniel Huan Kim

Kunwoo Lee

Curtis W Frank

Michael Lawrence Reo

Thomas A Afzal

In Haeng Cho

Uriel Hiram Chee

Daniel H Kim

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 prosthetic discs described herein include one-piece, two-piece, three-piece, and four-piece structures. The subject prosthetic discs exhibit stiffness in the vertical direction, torsional stiffness, bending stiffness in the sagittal plane, and bending stiffness in the front plane, where the degree of these features can be controlled independently by adjusting the components of the discs. The interface mechanism between the endplates and the core members of several embodiments of the described prosthetic discs enables a very easy surgical operation for implantation.

Prosthetic intervertebral discs having end plates and fibers between those end plates

A prosthetic intervertebral disc and methods for using the same are provided. The subject prosthetic discs are characterized by including top and bottom endplates separated by a fibrous compressible element that includes an annular region and a nuclear region. The two plates are held together at least one fiber wound around at least one region of the top endplate and at least one region of the bottom endplate. The subject discs may be employed with separate vertebral body fixation elements, or they may include integrated vertebral body fixation elements. Also provided are kits and systems that include the subject prosthetic discs.

Prosthetic intervertebral discs

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 prosthetic discs described herein include one-piece, two-piece, three-piece, and four-piece structures. 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 of the discs. The interface mechanism between the endplates and the core members of several embodiments of the described prosthetic discs enables a very easy surgical operation for implantation.

Prosthetic intervertebral discs having end plates and an annular capsule

Prosthetic intervertebral discs having rigid end plates with depressions in their inner surfaces and fibers between those end plates

Method and a kit for inserting prosthetic intervertebral discs into a spine

Prosthetic intervertebral disc

Prosthetic intervertebral disc and methods for using the same

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Kyunggi-do, South Korea

Sung Kyu Ha