MEDICATION ADMINISTRATION DEVICE

A medication administration device includes: a casing; a syringe including: a barrel housed in the casing, and a puncture needle in fluid communication with the barrel; a needle cover having a hollow cylindrical shape, disposed inside the casing, covering a distal end of the syringe, and configured to be displaced toward a proximal end relative to the casing when the needle cover is pressed against a puncture target; a plunger disposed inside the casing and configured to eject the medication through the puncture needle upon movement of a distal end of the plunger inside the barrel; a signal generator configured to generate a signal indicative of completion of administration of the medication into the living body along with distal movement of the plunger; and a delay mechanism located in the casing and configured to delay the distal movement of the plunger.