Syringe Having a Removable Cover for Use as a Plunger Rod in Rotational Engagement
AssigneeBecton Dickinson France
InventorsDarrin Scott Manke, Christopher Labak, Joseph Omer St. Cyr
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Abstract
A syringe assembly includes a syringe barrel defining a chamber, a stopper disposed within the chamber, and a plunger assembly. The plunger assembly includes an elongated plunger rod, a housing, and a handle portion connecting the plunger rod and housing. The plunger assembly transitions from a first position disposed about the syringe barrel, to a second position with the plunger rod engaged with the stopper. Transition of the plunger assembly includes rotational engagement of the plunger rod and stopper.
Claims25
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 therein;
- a stopper disposed within the chamber;
- and
- a plunger assembly comprising an elongated plunger rod, a housing, and a handle portion connecting the elongated plunger rod and the housing,
- wherein the plunger assembly is adapted to transition from a first position in which the plunger assembly is disposed about the exterior surface of the syringe barrel, to a second position in which the plunger rod is engaged with the stopper, wherein transition of the plunger assembly from the first position to the second position comprises rotational engagement of the plunger rod with a portion of the stopper.
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 therein;
- a stopper disposed within the chamber;
- and
- a plunger assembly comprising an elongated plunger rod, a housing, and a handle portion connecting the elongated plunger rod and the housing,
- wherein the plunger assembly is adapted to transition from a first position wherein the plunger rod and housing extend over the exterior surface of the syringe barrel to form a protective cover, to a second position wherein the plunger rod rotatably engages a plunger head to advance the stopper within the chamber.
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 therein extending along a longitudinal axis of the syringe barrel;
- a stopper disposed within the chamber;
- an outwardly extending flange disposed about at least a portion of the exterior surface of the syringe barrel and extending radially outward therefrom in a direction substantially perpendicular to the longitudinal axis;
- and
- a plunger rod having a distal end and a proximal end, the plunger rod transitionable from a first position in which the distal end contacts the outwardly extending flange, to a second position in which the distal end engages a portion of the stopper.
Dependencies are inferred from the claim text.