Patent ID: 6013037
Filing Date: 2000-01-11
Classification: A61B

Abstract:
A medical syringe for obtaining a fluid sample from a patient, said medical syringe comprising:an elongate body having an interior wall, an open proximal end, and a closed distal end, said distal end having a distal opening therethrough;a plunger assembly having unitary proximal and distal portions and being slidably disposed in said proximal end of said elongate body, said distal portion sealably engaging said interior wall, thereby defining a fluid chamber between a distal end of said plunger assembly and said distal end of said elongate body, said proximal portion including a cavity therein for receiving a vacuum specimen tube;a conduit extending proximally from said fluid chamber through said distal portion of said plunger assembly to a proximal opening communicating with said cavity in said proximal portion; anda penetrable seal in said cavity for substantially sealing said conduit from retrograde flow of air.