البحث في مجموعات البراءات الوطنية والدولية

1. (WO2002045627) ANTERIOR VARIABLE EXPANDABLE FUSION CAGE

Pub. No.:    WO/2002/045627    International Application No.:    PCT/US2001/041799
Publication Date: Fri Jun 14 01:59:59 CEST 2002 International Filing Date: Tue Aug 21 01:59:59 CEST 2001
IPC: A61F 2/00
A61F 2/02
A61F 2/28
A61F 2/30
A61F 2/44
Applicants: JACKSON, Roger, P.
Inventors: JACKSON, Roger, P.
Title: ANTERIOR VARIABLE EXPANDABLE FUSION CAGE
Abstract:
An interbody device (1) for use between a pair of adjacent vertebrae (24, 25) includes a body (5) and at least one expansion member (7, 8, 9). The body (5) has upper (15) and lower (16) walls that are joined by a rear wall (17) that functions as a spering hinge. The walls (15, 16) have anterior ends (30, 31) that are supported in a non-expanded configuration by spaced feet (32, 33) that project out from the walls (15, 16). The expansion member (7, 8, 9) is elongate and has a threaded portion (61) that is threadably received in the rear wall (17). Each expansion member (7, 8, 9) also includes a head (66a, 66b, 66c) having a wedge portion (69) that engages the anterior ends (30, 31) of the walls (15, 16) and forces the walls (15, 16) apart as the expansion member (7, 8, 9) is screwed into the body (5). Preferably, the expansion member (7, 8, 9) is only one of a plurality of expansion members found in a kit which vary with respect to the diameter of the expansion member head (66a, 66b, 66c). Further, a support and connecting plate (180) is preferably utilized subsequent to installation of the devices (1) between vertebrae (24, 25) to connect the connected pair of the devices (1).