Patent ID: 7566326

Claim:
An injection system comprising: a syringe body having a distal portion and a proximal portion, the syringe body defining a pumping chamber; a syringe plunger located in the pumping chamber and adapted for reciprocal motion within the pumping chamber; an actuating shaft adapted to be coupled to the syringe plunger and movable through the syringe body to control movement of the plunger, the actuating shaft having a first pivot member disposed at a distal portion thereof, the first pivot member adapted to form a releasable engagement with the syringe plunger; and a release actuator disposed near the proximal portion of the syringe body; wherein the first pivot member has a distal portion and a proximal portion, the first pivot member being pivotally coupled to the actuating shaft such that the distal and proximal portions move radially when the first pivot member is pushed into the releasable engagement with the syringe plunger during movement of the actuating shaft toward the distal portion of the syringe body; and wherein the distal portion of the first pivot member is adapted to move radially to release the syringe plunger upon engagement of the proximal portion of the first pivot member with the release actuator during movement of the actuating shaft away from the distal portion of the syringe body.