Abstract: A spinal stabilization assembly is provided and includes a cup, fastener and keeper portions surrounding the head of the fastener. Further, methods of use of a spinal stabilization assembly are also provided. The keeper portions are located within the cup and at least partially surround the head of the fastener.

Abstract: A rod, clamp and spinal fixation technique and method involving monoaxial or polyaxial screws for fusion in the cervical, thoracic, lumbar or sacral spine. The rod and clamp may be coupled to be pulled through the head of a fixation screw.

Abstract: An artificial spinal disk comprises a central capsule that is configured to slide laterally within the disk space with one or more of flexion, extension, and lateral bending of the spine so as to shift an instantaneous center of rotation of the artificial disk. In one embodiment, the invention comprises an artificial spinal disk comprising a first plate having an inwardly directed surface, a second plate having an inwardly directed surface facing generally toward the inwardly directed surface of the first plate, and a central capsule with outwardly directed opposed faces that slidably mate with the inwardly directed surfaces of the first and second plates.

Abstract: An anti-intrusion apparatus for a portal closure comprises first and second leg units having hingedly joined inner end portions and outer end portions respectively engagable with a closed movable closure at a portal and with fixed portal-adjacent structure. The apparatus folds for storage and has an unfolded use position in which the leg units are unfolded through an arc exceeding 180° to an over-center position. The first and second leg units are hinged at a knee unit wherein detent structure between the knee unit and at least one of the leg units defines a resiliently fixed relative position of the leg units. The first and second leg units are pivotally joined at the knee unit which in turn carries an alarm unit.

Abstract: A valve tappet apparatus including a first tappet body, at least a portion of the first tappet body having a curved outer circumference; a second tappet body, at least a portion of the second tappet body having a curved outer circumference; an elongated, rigid link bar having a first end and a second end; a first attachment mechanism attaching the first end of the link bar to the first tappet body, the first attachment mechanism including a screw for extending through at least a portion of the first tappet body and a nut member for attaching the first end of the link bar to the distal end of the screw, the face surface of the nut member having a concaved portion for engaging a portion of the outer circumference of the first tappet body; and a second attachment mechanism attaching the second end of the link bar to the second tappet body, the second attachment mechanism including a screw for extending through at least a portion of the second tappet body and a nut member for attaching the second end of the link