Syringe with Removable Plunger for Arterial Blood Gas Sample Collection

摘要

A fluid collection assembly (10) and method for use thereof is provided including a fluid collection cartridge (20) having a tubular member (21) with a plunger assembly slidably inserted. The plunger assembly includes a stopper (32) and a plunger rod (31). The stopper and plunger rod are removably interlocked together which enables the plunger rod to exert a force in a distal direction on the stopper and to be removed from the stopper upon the application of a proximal force thereto. The fluid collection assembly is particular useful in the collection of arterial blood. In use, the assembly is primed with a liquid anticoagulant, the plunger rod is removed, and a blood sample is collected with the arterial pressure causing the stopper to travel in a proximal direction along the cartridge.

主权项

1. A fluid collection cartridge configured for use with a needle holder for collecting a fluid sample, the fluid collection cartridge comprising:
a tubular member having a proximal end, an open distal end, and sidewall extending between the proximal end and the distal end defining an internal chamber having an internal reservoir; a pierceable closure associated with the open distal end of the tubular member, the closure configured to cooperate with the sidewall of the tubular member to sealingly close said open distal end; and a plunger rod assembly including a stopper and a plunger rod removably associated with one another by an interengaging arrangement, wherein said interengaging arrangement is configured to enable the plunger rod to apply a distally directed force to the stopper and to enable removal of the plunger rod from the stopper and from the tubular member upon the application of a proximally directed force.