Patent ID: 7114367

Claim:
A system for calibrating pulmonary function test equipment, comprising: (a) syringe means, including a syringe having: (1) a cylindrically shaped sidewall, (2) a proximal end with an centrally located orifice, (3) a distal end with an output port, (4) an interior cavity, and (5) a plunger with a shaft slidably mounted through the orifice, a piston-type head mounted on one end of the shaft, and a handle mounted on an opposing end of the shaft; (b) a functional residual capacity port; (c) a rigid functional residual capacity bag connected in flow communication with the functional residual capacity port; (d) control means having a plurality of stop mechanisms, including: (1) a first stop mechanism, (2) a second stop mechanism structured to enable selective connection of the interior cavity in flow communication with the functional residual capacity port, and (3) a third stop mechanism, and (e) connection means structured to connect the syringe means to existing pulmonary function test equipment.