Artificial disc devices are disclosed that restore correct anatomical intervertebral spacing for damaged discs while maintaining a substantially normal range of biomechanical movement for the vertebrae between which they are implanted. The disc devices include center bearing and outer or annular bearing...http://www.google.es/patents/US20030220691?utm_source=gb-gplus-sharePatente US20030220691 - Artificial intervertebral disc device
Número de solicitud: 10/282,620 Número de publicación: US 2003/0220691 A1 Fecha de presentación: 29 Oct 2002 Patente emitida: US7001433 ( Fecha de emisión 21 Feb 2006)
