Patent ID: 7476218
Filing Date: 2009-01-13
Classification: A61M

Abstract:
1. A syringe for dispensing a fluid, comprising: a barrel for containing the fluid; a plunger having a plunger head slideably mounted and retractable within the barrel; selectively engageable locking means, wherein the locking means comprises a locking member provided at the plunger, the locking member being rotatable relative to the plunger from a first to a second position, wherein the locking member is slidable relative to the plunger when the locking member is at the first position, and wherein the locking member is prevented from sliding relative to the plunger when the locking member is at the second position, thereby limiting the travel of the plunger head to determine the volume of fluid that is dispensed; and wherein the syringe includes: fixing means comprising a resilient tab, that when engaged permanently prevents movement of the locking member from the second position to the first position.