An organic light-emitting device includes at least one organic layer sandwiched between anode and cathode wherein at least one of the at least one organic layer is a light-emitting layer that includes a polymer compound including structural units from a polymerizable compound of Formula below. A transformer passes edges of the received digital signals. A second coaxial line extends between the second input terminal and the output terminal. The first current path is driven by a fast acting transistor through a resistor. It further functions as an alignment rod for inserting the extended outer sleeve which is a hollow tubular member capable of maintaining said spacing and alignment of two adjacent vertebrae and defines a protected space through which subsequent instruments which may include, but are not limited to a drill and a diameter reducing inner sleeve may be passed, as well as a spinal implant.