Syringe pump and drive head assembly therefor

A drive head assembly for a syringe pump usable with a syringe having a barrel and a plunger, the plunger having a plunger flange, the drive head assembly being configured to drive the plunger along its axis when loaded in the syringe pump, the drive head assembly comprising:

• a flange retaining mechanism for retaining the plunger flange to the drive head assembly, and a load measuring device for measuring compressive force on the plunger flange, the load measuring device being movable within the drive head assembly transverse to the axis;
• wherein the load measuring device is arranged to receive a pushing force from a pushing component such that the load measuring device is moved within the drive head assembly until the pushing component abuts against the plunger flange or a datum that corresponds to the size of the plunger flange, such that a center of the load measuring device is aligned with the axis.

A syringe pump usable with a syringe having a barrel and a plunger, the plunger having a plunger flange, the syringe pump comprising:

• a housing arranged to receive the syringe, the housing having a drive mechanism having a drive head assembly for driving the plunger along its axis;
• the drive head assembly including a load measuring device for measuring compressive force on the plunger flange and a push button clamp arranged to clamp the plunger flange against the drive head assembly.

A syringe for use with a syringe pump, said syringe including a barrel, a safety projection and a plunger, the plunger having a plunger flange.