초록 ▼

Apparatus and methods for simultaneously obtaining clinical laboratory and arterial blood gas samples are disclosed. The apparatus includes a flow-through plunger configured for being detachably secured to the tip of a standard arterial blood gas syringe. The flow-through plunger has a conduit throu

Apparatus and methods for simultaneously obtaining clinical laboratory and arterial blood gas samples are disclosed. The apparatus includes a flow-through plunger configured for being detachably secured to the tip of a standard arterial blood gas syringe. The flow-through plunger has a conduit through the center thereof which permits blood to flow through the plunger into the arterial blood gas syringe. The flow-through plunger preferably has a diameter larger than the diameter of the arterial blood gas syringe. In this way, the combination of flow-through plunger and arterial blood gas syringe function as a plunger assembly for a larger syringe, preferably a clinical laboratory blood sample syringe. Both a clinical laboratory blood sample and an arterial blood gas sample may be obtained by introducing arterial blood into the clinical laboratory syringe barrel and passing the blood through the flow-through plunger into the arterial blood gas syringe. Arterial blood may be introduced into the clinical laboratory syringe through either a direct hypodermic needle puncture into an artery or by coupling the laboratory syringe barrel to an ex-vivo arterial blood source.

대표청구항 ▼

A dual-chambered linear syringe for simultaneously obtaining two fluid samples from a single fluid source comprising: a distal syringe barrel having a first open end, a second open end adapted for attachment to a fluid source, and a bore communicating between said ends; a proximal syringe barrel hav

A dual-chambered linear syringe for simultaneously obtaining two fluid samples from a single fluid source comprising: a distal syringe barrel having a first open end, a second open end adapted for attachment to a fluid source, and a bore communicating between said ends; a proximal syringe barrel having a first open end, a second open end, and a bore communicating between said ends, said proximal syringe barrel having an outside diameter smaller than the inside diameter of the distal syringe barrel; a flow-through plunger detachably secured to the second open end of the proximal syringe and configured such that it is capable of forming a slildable seal within the bore of said distal syringe barrel, said flow-through plunger having a conduit through the center thereof to permit fluid flow therethrough; wherein said proximal and distal syringe barrels are detachable in such a manner as to leave said flow-through plunger within said distal syringe barrel such that two generally enclosed fluid samples can be simultaneously obtained from a single fluid source in communication with said distal syringe.