Syringe having a squeeze-fit plunger rod

摘要

A syringe assembly having an exterior surface and defining a chamber having a stopper disposed therein is disclosed. The syringe assembly includes a plunger assembly having an elongated plunger rod and a handle portion connected thereto, the plunger rod including a depending leg and at least one hinge connecting the depending leg with the handle portion. The plunger rod is adapted to transition from a collapsed position, in which at least a portion of the depending leg extends along at least a portion of the exterior surface of a syringe barrel, to an extended position in which at least a portion of the depending leg engages the stopper. The at least one hinge maintains the depending leg substantially parallel to a longitudinal axis of the syringe barrel in both the collapsed position and the extended position.

主权项

1. A syringe assembly, comprising:
a syringe barrel having a first end, a second end, and a sidewall extending therebetween having an exterior surface and an interior surface defining a chamber; a stopper disposed within the chamber of the syringe barrel; and a plunger assembly comprising an elongated plunger rod and a handle portion connected thereto, the plunger rod comprising a depending leg and at least one hinge connecting the depending leg with the handle portion, wherein the plunger rod is adapted to transition from a collapsed position, in which the entirety of the plunger rod is external to the syringe barrel and at least a portion of the depending leg extends along at least a portion of the exterior surface of the syringe barrel, to an extended position in which at least a portion of the depending leg engages the stopper, and wherein the at least one hinge maintains the depending leg substantially parallel to a longitudinal axis of the syringe barrel in both the collapsed position and the extended position.