Artificial intervertebral disc
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsYasuhiko Hirayama, Haruko Ikata, Satoshi Ojima, Hiromi Matsuzaki
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Abstract
An artificial intervertebral disc comprises a pair of end bodies which are provided, on their outer surfaces, with apatite layers. The disc includes a medical synthetic polymeric intermediate which is held between the end bodies through connecting members.
Claims12
An artificial intervertebral disc comprising a pair of end bodies, and a medical synthetic polymeric intermediate which is held between the end bodies via connecting members, said connecting members including projections for abutting associated end bodies, and embedded portions which are embedded in said medical synthetic polymeric intermediate, the transverse dimension of each said embedded portion being larger than the transverse dimension of each said projection, whereby said connecting members are connected to said medical synthetic polymeric intermediate so that resistance and elasticity occur through said connecting members when both compression and tensile forces are applied.
Dependencies are inferred from the claim text.