Patent ID: 7803132

Claim:
A syringe comprising: a hollow barrel having a proximal opening, a distal opening and a fluid chamber defined therebetween, the barrel having an interior surface proximate the distal opening; a hollow plunger having a cavity and extending into the barrel via the proximal end opening and axially movable within the barrel toward and away from the distal end opening; a needle assembly configured to be selectively secured at least partially within and located proximate a distal end of the barrel, the needle assembly comprising a needle holder, a resilient member biasing the needle holder toward the barrel proximal end opening, and a retaining member releasably secured to the needle holder via a reduced material section; wherein the needle assembly and barrel interior surface include corresponding securing sections configured to mutually engage with each other and restrict rotational movement of the needle holder with respect to the barrel when the needle assembly is installed at least partially within the barrel; wherein the needle holder includes a connection structure configured to engage with a complementary connection structure of a needle to facilitate selective attachment and removal of different types of needles with the needle holder connection structure.