To provide a device which realizes infusion of a plurality of chemicals to a patient in order by switching automatically such as an infusion tube switch device 11 which is automatically switched to infusion of a B chemical tank 32 with timing of finish of infusion of an A chemical tank 31 in the case of infusion of the plurality of chemicals to the patient.
The infusion tube switch device 11 consists of: tube groove parts 3b, 5a and 5b for respectively housing a tube 35 for chemical in the A chemical tank 31 to flow through and a tube B for chemical in the B chemical tank 32 to flow through; and a one-side pressing mechanism 12 or a both-side pressing mechanism 14 for pressing and sealing the tubes 35 and 36 with pressing surfaces 2a, 4a and 4b. Moreover, the pressing mechanisms 12 and 14 have driving mechanisms 16 and 17 consisting of cam holes 2c, 4c, eccentric cams 24, 26 and a driving part 9.
KATO SUSUMU
KUNO AKIRA
