Microprojection implement and method for producing same

A microprotrusion device comprising:

• needle-like first protrusion portions that are formed so as to protrude from one surface of a substrate sheet, wherein said first protrusion portions are hollow and each has an opening portion, the hollow portions of the first protrusion portions being in communication with the outside of the device via the opening portions of the first protrusion portions, wherein the hollow portions of the first protrusion portions function as reservoirs for a liquid that is to be discharged from the opening portions of the first protrusion portions to the outside of the device;
• and
• second protrusion portions that are formed so as to protrude from the vicinity of the first protrusion portions on the one surface of the substrate sheet and to have a protrusion height lower than that of the first protrusion portions, and wherein a tip end of each second protrusion portion has a horizontally extending straight line or a curve projecting in a protruding direction of the second protrusion portion as viewed in side view.