Patent ID: 8529509

Claim:
A syringe drive device configured to operate a syringe having an outer tube, a piston with an end inserted in the outer tube, and a needle for puncturing a medicinal solution container, the syringe drive device comprising: a syringe holding section configured to detachably hold the outer tube of the syringe; a piston manipulating section configured to detachably hold the piston of the syringe; a piston drive section including a motor, the piston drive section configured to move the piston manipulating section using the motor to thereby move the piston in a direction in which the piston is pushed into the outer tube or a direction in which the piston is pulled out from the outer tube; a piston controller configured to change the direction in which the piston manipulating section is moved by the piston drive section using a drive current of the motor; an internal pressure measuring section configured to measure an internal pressure of the syringe and the medicinal solution container which is punctured by the needle based on a drive current of the motor; and a display section configured to display the internal pressure of the medicinal solution container measured by the internal pressure measuring section.