Patent ID: 7806117

Claim:
A peroral powder delivery device to deliver a unit dose of a peroral powder through an oral cavity in which a capsule holder for holding a capsule that contains a peroral powder and loading the capsule, the capsule holder is attached into a body so as to be capable of advancing into and retracting from the inside of the body in a direction perpendicular to the longitudinal direction of the capsule held by the capsule holder, the body has a cutter blade for cutting both ends of the capsule when it advances into the body while being held by the capsule holder and making holes on both ends of the capsule, and a first air passageway having a connection port in communication with a hole made on one end of the capsule when the capsule is loaded in the body and a second air passageway having a connection port in communication with a hole made on the other side of the capsule, the first air passageway has an inhaling port for inhaling the peroral powder in the capsule, the second airpassageway has a suction valve which opens by the suction force or inhalation force from the inhaling port to introduce air into the capsule, and the suction valve has a disciform poppet that protrudes from the connection port of the second air passageway and advances from the hole of the capsule in communication with the connection port to the inside of the capsule when the valve is opened, wherein the distance between the connection port of the first air passageway and the connection port of the second air passageway is set shorter than the length of the capsule after the both ends have been cut by the cutter blade, such that both ends of the capsule loaded therebetween are urged by peripheral edges of both of the connection ports.