| 摘要 |
PROBLEM TO BE SOLVED: To achieve simplification and downsizing of a structure.SOLUTION: A medicine delivery device comprises: a cylindrical body 2 having a body in which a medicine 10 is encapsulated, and a cylinder tip 5 in which a delivery hole 5a for delivering the medicine is formed; a lid body 3 having an air inflow hole 6a and coupled to the cylindrical body; and a sealing film 15 for closing the air inflow hole by being adhered to the lid body during non-delivery of the medicine from the delivery hole. An internal space 9, which communicates with the delivery hole and the air inflow hole and in which an expansion agent 11 and the medicine are encapsulated in a separated state, is formed by the cylindrical body and the lid body. The expansion agent is encapsulated in the internal space and made of a material containing iron as a main component. Air flows through the air inflow hole, iron oxide is generated by oxygen in the flowing air, and this causes the expansion agent to expand. Pressure is applied to the medicine due to the expansion of the expansion agent and cases the medicine to be delivered from the delivery hole. The sealing film is adhered to the lid body, thereby stopping the delivery of the medicine from the delivery hole.SELECTED DRAWING: Figure 1 |
