Importance

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Abstract

When a door is opened, a midway part of an infusion tube is temporarily held in a fixed position of a pump body and the door is to be closed, in order to actively prevent the door from being closed if the infusion tube is not properly set in its fixed position, so that a back plate base 132 can be placed in a state of interposition in which the infusion tube is properly held and an immovable state in relation to the door 4 can be ensured, there are provided a stopper member 70 to be shifted in the direction of arrow d1 by a shift energizing force to be placed in a state of engagement with the back plate base 132 when the door is open and a shape 64 provided on the pump body for shifting the stopper member 70 so as to eliminate the state of engagement when the infusion tube 2 is properly held temporarily in said fixed position and the door is shifted to a closed state in relation to the pump body 3.

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First Claim