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US 2004/0172130 A1Published application
Intervertebral cage
AssigneeShowa Ika Kohgyo Co., Ltd.
InventorsShinnosuke Nakahara, Kazuhiro Hasegawa, Kazuya Oribe, Hiroshi Takamido
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Abstract
An intervertebral cage 41 of the present invention is comprised of a main body 43 defined by an upper surface 43 E, a lower surface 43 D, a pair of side surfaces 43A, 43B; and withdrawal prevention means formed on the upper and/or the lower surfaces of the main body 43 and asymmetrically in a sectional side view. The withdrawal prevention means regulates an insertion direction of the intervertebral cage 41.
Claims6
An intervertebral cage inserted between vertebrae of a spine comprising:
- a main body defined by a pair of upper and lower surfaces and a pair of side surfaces connected thereto;
- and
- withdrawal prevention means formed on the upper and/or the lower surfaces of the main body and asymmetrically in a sectional side view,
- wherein the withdrawal prevention means regulates an insertion direction of the intervertebral cage.
1 more element
Dependencies are inferred from the claim text.