Abstract: A system for heating a heat-transformable shape memory surgical device. The system includes a sealed, sterilizable housing, a thermal probe for heating the shape memory surgical device, the thermal probe being connected with the housing, and a printed circuit board positioned within the housing. The printed circuit board includes a system controller having a power circuit for controlling the receipt and distribution of heating power to the thermal probe, a feedback circuit for measuring a condition of the shape memory surgical device via the thermal probe, and a control circuit for receiving data from the feedback circuit and adjustably controlling an amount of heating power that the power circuit distributes to the thermal probe. The control circuit includes an automatic-cutout circuit for terminating the distribution of heating power to the thermal probe after a specific amount of time or upon the occurrence of a predetermined condition.

Abstract: An adjunct device for use with a disc replacement prosthesis engages the prosthesis to restrict or prevent relative movement or articulation between the end plates of the disc prosthesis. The device is configured to be implanted within an existing disc prosthesis in lieu of removal and replacement of the prosthesis or fusion of the motion segment.

Abstract: An anterior instrumentation method of treating spinal deformities involves a combination of a spinal rod anterior system and one or two spinal plates fixed on the cephalad and caudal end vertebrae of the instrumented segment. Deformities are treated by the anterior rod system through compression, distraction and derotation. Two spinal plates are fixed to the cephalad and caudal end vertebrae respectively to prevent the end vertebrae from rotating into kyphosis. A number of cancellous screws are inserted into the cephalad and caudal end vertebrae and their adjacent vertebrae through the spinal plate to provide several points of fixation on the end vertebrae to prevent implant failure and loss of correction.

Abstract: A variable angle connector for engaging a bone fastener to a spinal rod includes a body defining a channel for receiving the spinal rod and a set screw arrangement for clamping the rod within the channel. The body defines an engagement face configured for interdigitating engagement with the head of the bone fastener. The fastener is mounted on a post projecting from the engagement face of the body, with means for engaging the fastener to the post. The body of the connector includes a deformable portion at one portion of the engagement face that deforms when the set screw is tightened to clamp the rod within the rod channel. As the connector body deforms, the portion of the engagement face is brought into engagement with the head of the bone fastener.