A injection system having a syringe body which defines a pumping chamber.
A syringe plunger is located in the pumping chamber and is adapted for
reciprocal motion within the pumping chamber. The syringe plunger
includes a capture member projecting outwardly in a proximal direction.
An actuating shaft is coupled to the syringe plunger and is movable
through the syringe body to control movement of the syringe plunger. The
capture member is adapted to flex radially outwardly when contacted by
the actuating shaft to form a releasable engagement with the actuating
shaft when the actuating shaft and the capture member are in an
engagement position. A release actuator is disposed proximal to the
syringe body, and the capture member releases the actuating shaft upon
engagement with the release actuator.