A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/44 (2006.01)
Patent
CA 2607717
The invention relates to an intervertebral disc prosthesis consisting of: an upper plate (16), a lower plate (18) having an essentially-flat support surface, and an intermediate element comprising a base (22) which is equipped with a rim (23) and which is topped with a spherical cap (24). The upper plate and the cap define a ball and socket joint therebetween. The base of the intermediate element comes into contact with the support surface, while the lower plate (18) is equipped with a guide (28) comprising two edges (28a, 28b) which maintain the intermediate element therebetween. The rim of the base comes into contact with the edges (28a, 28b) and said rim is circular in shape and adapted to enable the intermediate element to roll along the length of the edges (28a, 28b).
L' invention concerne une prothèse de disque intervertébrale comportant un plateau supérieur (16) , un plateau inférieur (18) présentant une surface d'appui sensiblement plane, un élément intermédiaire comportant une base (22) présentant un pourtour (23) et surmontée d'une calotte sphérique (24) . Le plateau supérieur et la calotte définissent entre eux une liaison rotule. La base de l'élément intermédiaire vient en contact de la surface d'appui, le plateau inférieur (18) présente un guide (28) comprenant deux bords (28a, 28b) maintenant entre eux l'élément intermédiaire. Le pourtour de la base vient au contact des bords (28a, 28b) , et le pourtour présente une forme circulaire et est adapté pour permettre le déplacement par roulement de l'élément intermédiaire le long des bords (28a, 28b) .
Robic
Spineart Sa
LandOfFree
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