Plunger rod for arterial blood collection syringes

Details Plunger rod for arterial blood collection syringes Plunger rod for arterial blood collection syringes

2008-04-01

2008-04-01

DeSanto, Matthew F. (Department: 3763)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

C604S126000, C604S006160, C600S576000

Reexamination Certificate

active

10703197

ABSTRACT:
An arterial blood collection device is provided having a one-piece plunger rod for use with a blood collection syringe. The plunger rod is hollow, with a closed front end. A self-sealing filter is provided within the closed front end of the plunger rod. Vents are spaced radially about the front end of the plunger rod for fluid communication into the hollow interior thereof. The plunger rod is intended for use in slidable communication within a syringe barrel. In use, the plunger can be retracted within the syringe barrel to form a cavity therein. Upon arterial blood contact, the cavity fills with blood and air can be expelled from the cavity through the vents and the filter and out to ambient air. The plunger rod is a one-piece assembly, eliminating the need for a separate rubber plunger seal.

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