Drug administration device

Abstract

To provide a liquid medicine administration device capable of reducing air bubbles (air) in a liquid medicine to be administered to a puncture object, and accurately administering the liquid medicine of a predetermined amount to the puncture object.SOLUTION: A liquid medicine administration device 12E includes: a syringe unit 20E having a barrel 74 filled with a liquid medicine M, and stored in a housing 16 so as to be movable in an axial direction; and a vibration generating mechanism 500 applying vibration to the syringe unit 20E when the syringe unit 20E moves in an end direction along the housing 16. Air bubbles in the liquid medicine M are separated from the barrel 74 and moved in a proximal end direction by applying vibration to the syringe unit 20E by the vibration generating mechanism 500.SELECTED DRAWING: Figure 59

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