A method for improving performance of a pipelined microprocessor by utilizing pipeline virtual registers allows for either decreased register spillage or decreased area and power consumption of a microprocessor. In one embodiment, an implantable monitoring device monitors a patient’s heart activity. The vertical drive device includes wire guides having guide holes through which the wire electrode is passed. The dispenser unit further includes a dispensing bore configured to receive the piston therein and a nozzle coupled to the housing. A method for retracting and maintaining an organ in a retracted position using suction so that the organ is free to move normally is provided. The first substrate includes a first dielectric layer and a wiring layer, a plurality of first electrodes connected to the semiconductor chip which first electrodes are provided on a first surface of the first substrate exposed to an inside of the opening part, and the second substrate includes a second dielectric layer made of a material substantially the same as the first dielectric layer.