Artificial intervertebral disk

Details Artificial intervertebral disk Artificial intervertebral disk

1997-12-09

1999-05-04

Yu, Mickey

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 18, A61F 244, A61F 230

Patent

active

058999418

ABSTRACT:
An operation for fixing a vertebral column by an autogenetic or a spacer has no movability or motion property, leading to an impedance of everyday life functions and recurrence of damage at the treated part. An artificial intervertebral disk comprising a movable protrusion which is formed integrally with a base body of a first connecting body and which has an arc shape in cross section at the tip end thereof, a movable receiver part formed by depressing a base body of a second connecting body at an opposing inner surface thereof, and wherein the movable receiver part comprises a receiving surface which contacts the tip end of the movable protrusion and a bank protruding from the periphery of the receiving surface, and a vertical gap is defined between the first and second connecting bodies and a horizontal gap is defined between the outer periphery of the movable protrusion and the inner periphery of the bank, whereby the first and second connecting bodies of the artificial intervertebral disk mounted on the ailed part have movability such as turning and sliding to thereby give a motion property to the vertebral column so that the aforementioned problem is solved.

REFERENCES:
patent: 5425773 (1995-06-01), Boyd et al.
patent: 5544968 (1996-08-01), Goellner
patent: 5676701 (1997-10-01), Yuan et al.

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