Syringe pump with force sensor on plunger pusher and/or retainers that are moved laterally and axially across front surface of plunger head

摘要

An alternative syringe pump and method of operation that is adapted to receive a syringe of the kind having a plunger movable along a barrel is described. The pump includes a plunger head retainer mechanism having a forwardly-facing surface adapted to engage a rear surface of the plunger head and to apply a forwardly-directed force to the plunger. The plunger head retainer mechanism includes a force sensor means responsive to force exerted on the plunger head by the retainer mechanism during displacement of the plunger. The retainer mechanism moves the plunder head and force sensor means together into contact with one another. The front of the pump is shown in Fig. 1. It includes an outer housing 1 with a recess 2 on its front surface shaped to receive a conventional syringe 3.