Patent ID: 9687610
Date: 2017-06-27
CPC Classifications: A61M

Claim:
1. A syringe assembly comprising: a syringe barrel having a first end, a second end, and a sidewall extending between the first end and the second end, the sidewall defining a chamber; a stopper disposed within the chamber of the syringe barrel; a plunger adapter engaged with the stopper, the plunger adapter having a first end, a second end, and an intermediate portion therebetween, the second end of the plunger adapter having a plunger interference portion defining a recessed portion wherein the recessed portion has a first area and a second area opening at the second end of the plunger adapter; and a plunger rod having first and second ends, the first end of the plunger rod pivotally secured to the plunger adapter, the plunger rod having a pre-use position wherein the second end of the plunger rod is positioned adjacent to the syringe barrel, and a use position wherein the plunger rod is configured to displace the stopper relative to the syringe barrel, the recessed portion of the plunger adapter receiving a portion of the first end of the plunger rod when the plunger rod is in the pre-use position and the use position, wherein, in the use position, the plunger rod and the recessed portion cooperate to provide multiple surfaces of engagement positioned substantially perpendicular with respect to each other thereby stabilizing the plunger rod with respect to the plunger adapter when torque is applied to the plunger rod.