Patent ID: 6224561
Filing Date: 2001-05-01
Classification: A61B,A61M

Abstract:
A fluid sampling system, comprising:a conduit line with a proximal portion adapted to be supplied with a fluid and a distal portion adapted to be in communication with a fluid system of a patient;a reservoir having a variable volume chamber with an inlet port open to the proximal portion of the conduit line and an outlet port open to the distal portion of the conduit line;a piston moveable within the chamber to vary the chamber volume;a bracket for mounting the reservoir to an external support, the reservoir being attached to the mounting bracket;a first pair of pressing surfaces, one on the bracket and the other adapted to displace the piston, the first pair of pressing surfaces adapted to be squeezed and displace the piston with respect to the chamber to increase the volume within the chamber; anda second pair of pressing surfaces adapted to be squeezed and displace the piston with respect to the chamber to decrease the volume within the chamber, wherein fluid may be drawn into the chamber and expelled therefrom upon actuation of the first and second pair of pressing surfaces, respectively.