Abstract: An infusion apparatus consisting of a housing containing an electric motor, the housing having a channel-shaped chassis integrally connected thereto and laterally offset therefrom. A toothed drive roller is transversely journalled in the chassis and is drivingly coupled to the motor by meshing bevel gears. The chassis side walls have opposing vertical grooves receiving the peripheral radial flange of the barrel of a syringe, holding the barrel so that its plunger is transversely engaged on the toothed drive roller. A clamping rod is pivoted to the upper portion of one of the side walls and is lockingly engageable with the other side wall. The clamping rod carries a pressure pad which clampingly engages on the plunger to hold it in driving engagement with the toothed roller. A cannula is detachably connected to the discharge end conduit of the barrel. The discharge conduit is provided with a needle penetrable through a self-closing septum provided in the cannula connector member.