Beat Lechmann,Roger Buerki,Mario Gago,Robert Frigg,Michael H. Mayer
申请号：
US11839088
公开号：
US08702797B2
申请日:
2007.08.15
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The inventive intervertebral implant (1), in particular an artificial intervertebral disc comprises a central axis (2), a top part (3) and a lower part (4), wherein A) the top part (3) is provided with a top apposition surface (5) which rests on a base plate of a superimposed vertebral body, B) the lower part (4) is provided with a lower apposition surface (6) for resting on the covering plate of an underneath vertebral body, C) one part (3, 4) comprises a convex joint element (12) provided with a convex sliding surface (11) and the other part (3, 4) comprises a joint shell (13) provided with a complementary concave surface, D) the convex joint element (12) and the convex joint shell (13) form a joint (9) by means of which the two parts (3, 4) are rotatable with respect to each other around at least one axis of rotation and E) the intervertebral implant (1) is permeable to x-rays.
