Abstract: A user-centric solar visor for vehicles comprising a relatively small visor panel (10) which, after pivoting down to an operational position, can be easily positioned in a roughly orbital path around the user (hence “user-centric”), extended up or down, and pivoted about its center to safely block any problematic direct or reflected solar light. One embodiment of user-centric manipulation of the visor is accomplished by a pivoting horizontal extension bar (24) mounted to the roof of the vehicle in the general vicinity of the user's head. In addition to use as original equipment, the embodiment may be installed as a replacement visor by the use of an adaptor extension arm (42) and an adaptor bracket (44). One alternate embodiment of user-centric manipulation of the visor is accomplished by a recessed visor track (64) attached to the roof of the vehicle describing an arc approximately centered about the user's head.

Abstract: An implantable prosthesis is described having a pair of opposed shells and a central body disposed between the opposed shells wherein the central body and the shells cooperate to limit the motion of the central body with respect to the shells. An assembly for preparing a disc space for the implantation of a prosthesis is further described having a plurality of instruments cooperating to guide a tool associated with the assembly.

Abstract: An vertebral implant is interposed between two vertebral endplates and comprises a first endplate assembly having a first restraint mechanism extending from a first exterior surface for engaging a first vertebral endplate The implant further comprises a second endplate assembly having a second restraint mechanism extending from a second exterior surface for engaging a second vertebral endplate and a central body articulable between the first and second endplate assemblies. The first restraint mechanism has a shape that matches a contour in the first vertebral endplate.

Abstract: An assembly for preparing a vertebral disc space to receive a prosthesis comprises a support frame having a base and a pair of guide tracks extending from the base. The base is adapted to attach to a plurality of vertebral bodies. The assembly further includes a guide block operatively connected to at least one of the guide tracks and having an opening disposed there through. The assembly further includes a position control mechanism corresponding to the at least one of the guide tracks. The position control mechanism has a plate extending there from for coupling to the guide track and the guide block and an actuating knob for adjusting the position of the plate and therefore the guide block. The assembly further includes a bone-removal device positioned through the opening of the guide block and operatively connected to the guide block.

Abstract: An implantable prosthesis is described having a pair of opposed shells and a central body disposed between the opposed shells wherein the central body and the shells cooperate to limit the motion of the central body with respect to the shells. An assembly for preparing a disc space for the implantation of a prosthesis is further described having a plurality of instruments cooperating to guide a tool associated with the assembly.