A medical device for use with a fluid transfer device includes a hub having an open proximal end with a frusto-conically-shaped cavity therein, a distal end and a passageway therethrough. A set of first contacts each defines a first contacting section disposed on the first mating face and a leg portion. The offset cancellation element is able to adjust to the initial unwanted capacitances of each sensor as well as dynamically adjust to changes in the unwanted capacitance due to the environment. Then, a wiring substrate is heated to a high temperature at which both the high-temperature solder and the eutectic solder melt, so that the surface-mount components and the IC are reflow-soldered. the substrate or mirrors in the projection lens, on which the projection beam is incident. Methods of preparation of the compounds, and uses thereof in medicine, for example treatment of schizophrenia, are also disclosed.