A catheter useful for non-surgical entry into a uterus to dispense a diagnostic fluid therein. The flat conductors are formed either by a slotted metal sheet or by elongated contact connecting pads. A preliminary gate pattern is formed by partially removing the polysilicon layer along a first direction by a first etching process. The circular inside surface is circularly recessed to have a concaved surface of just one radius of curvature R. The panel includes a pair of carrying rollers, a transcribing roller and a pair of discharging sheet carrying rollers.