A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/44 (2006.01)
Patent
CA 2346378
The artificial spinal disc of the invention is intended to articulate in a manner resembling a human knee articulation. The artificial spinal disc (20) is comprised of two plates (21, 22) each having a planar outer surface and an articulating inner surface. The planar outer surfaces contact adjacent inferior (71a) and superior (72a) surfaces of two adjacent vertebrae having the spinal disc implanted therebetween. The planar surfaces of the plates are affixed to the adjacent vertebrae. The articulating surfaces (25, 26) of the artificial spinal disc will be generally bimodal-shaped such that a first articulating surface (25) will have two convex shaped articulating portions and the second articulating surface (26) will have two concaved shaped articulating portions. The concave and convex shaped portions of the respective plates will be generaly complementary. The articulation of the artificial spinal disc will generally resemble that of a human knee.
Le disque vertébral artificiel selon l'invention est conçu pour s'articuler à la manière d'un genou humain. Le disque vertébral artificiel (20) se compose de deux plaques (21, 22) présentant chacune une surface extérieure plane et une surface intérieure à articulation. La surface extérieure plane est en contact avec les surfaces inférieure (71a) et supérieure (72a) de deux vertèbres adjacentes entre lesquelles est implanté un disque vertébral. Les surfaces planes des plaques sont fixées aux vertèbres adjacentes. Les surfaces d'articulation (25, 26) du disque vertébral artificiel sont bimodales de par leur forme, la première surface d'articulation (25) présentant deux parties d'articulation convexes, la seconde surface d'articulation (26) deux parties d'articulation concaves. Les parties concaves et convexes des plaques respectives sont généralement complémentaires. Dans l'ensemble, l'articulation du disque vertébral artificiel rappelle celle d'un genou humain.
Disc Replacement Technologies Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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