Syringe with Breakable Plunger for Arterial Blood Gas Sample Collection

摘要

A fluid collection assembly and method for use thereof is provided including a barrel with a plunger rod slidably inserted is disclosed. The assembly and method are particularly useful in the collection of arterial blood. The plunger rod includes a proximal portion, a distal portion with a stopper, and a breakable connector between the proximal and distal portions. In use, the assembly is primed with a liquid anticoagulant, the breakable connection is broken, and a fluid sample is collected with the arterial pressure causing the distal portion of the plunger rod to travel in a proximal direction along the barrel and contact an annular flange extending within the barrel. After collection, a tip cap can be applied to the assembly to prevent any spillage of the fluid sample during handling, storage, and transportation.

主权项

1. A fluid collection assembly comprising:
a barrel having a proximal end, a distal end, and a sidewall extending between the proximal end and the distal end, said sidewall including an internal surface defining an internal chamber; a stopper disposed within the barrel; a plunger rod having a proximal portion and a distal portion associated with the stopper; a breakable connector joining the proximal portion and the distal portion of the plunger rod, said connector adapted to break upon application of a breaking force to the plunger rod; and an annular flange extending from the internal surface into the chamber, said annular flange configured to limit proximal movement of the stopper.