Title:
捕捉されたボール・ソケット形ジョイントを有する人工椎間板
Document Type and Number:
Japanese Patent JP4580239
Kind Code:
B2
Abstract:
An artificial disc having a pair of opposing baseplates, for seating against opposing vertebral bone surfaces, separated by a ball and socket joint that includes a ball compression locked to a post extending from one of the baseplates. The ball is captured within a curvate socket formed in a peak of a convex structure attached to the other of the baseplates. The socket is formed by opposing curvate surfaces, one on the convex structure and one on the other of the baseplates. While the ball angulates freely in the socket, the rotation of the ball in the socket has a limited range due to interference between a protrusion on the convex structure that extends into the socket and a curvate recess on the ball. The ball and socket joint therefore permits the baseplates to rotate relative to one another through a limited range and also angulate relative to one another.
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Inventors:
Jericho, Joseph Pee
Dudasik, Michael
Zuboku, Refile
Ralph, James Dee
Stephen Tatar
Dudasik, Michael
Zuboku, Refile
Ralph, James Dee
Stephen Tatar
Application Number:
JP2004540084A
Publication Date:
November 10, 2010
Filing Date:
September 16, 2003
Export Citation:
Assignee:
Spine Core, Incorporated
International Classes:
A61F2/44; A61F2/46; A61F2/00; A61F2/02; A61F2/30
Foreign References:
| US5893889 | ||||
| US3696446 | ||||
| FR2091269A1 | ||||
| US5989291 |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Fukagawa Eri
Satoshi Morimoto
Kyoko Tsunoda
Hirose Miki
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Fukagawa Eri
Satoshi Morimoto
Kyoko Tsunoda
Hirose Miki