Patent ID: 8684966
Filing Date: 2014-04-01
Classification: A61M

Abstract:
1. A syringe, comprising: a hollow barrel having a proximal opening, a distal end including a distal end opening and a fluid chamber defined therebetween; a hollow plunger having a cavity and extending into the barrel via the proximal opening and axially movable within the barrel toward and away from the distal end opening; a needle assembly coupled to the barrel distal end and including a needle stem; a needle system including a needle having a needle connector configured to be selectively attached to the needle stem, the needle stem and needle each configured to be retracted into the barrel; and wherein the needle system is configured such that it is restricted from providing an axial force to the needle stem during attachment of the needle connector to the needle stem to prevent unintended retraction of the needle stem into the barrel during attachment of the needle connector to the needle stem.