How Do Chemyx Syringe Pumps Work?

A syringe pump is a small, positive-displacement pump used to gradually transfer precise volumes of fluid. Chemyx Fusion Series syringe pumps are all driven via a stepper motor. A lead screw, threaded through a pusher block, precisely turns the pump’s stepper motor. This causes the pusher block to move.

The fluid ejects at an accurate and precise rate during infusion pump mode, when the pusher block pushes against the plunger of a secured syringe. Brackets on the pusher block hold the plunger of the syringe for withdrawal capabilities.

When the stepper motor turns in the opposite direction, the pusher block moves such that the syringe plunger is pulled, thus drawing fluid into the syringe. For the Fusion Series automated syringe pumps, the pusher block moves to the right for infusion and to the left for withdrawal.


Controlled Elements

Syringe Pump Parts

All our Fusion syringe pump systems have a single lead screw threaded through a pusher block. The pusher block moves when the lead screw turns. The two guide rods keep the pusher block horizontal and perfectly perpendicular to the lead screw. The block-release button disengages the pusher block from the lead screw.

Move the pusher block to a new position by holding down the button. Releasing the button will lock the pusher block back in place.

Place the syringes on the syringe-holder block in the v-shaped grooves, or channels, and hold securely using syringe clamps. The Fusion 100 and Fusion 200 both have two syringe channels. The safety collar of the Fusion 100 and Fusion 200 helps protect the integrity of the syringes by keeping the pusher block from pushing on a completely depressed syringe.

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