The present air tube assembly includes a planar resistive element (22) which is disposed in the hollow space of an air tube between a first tubular segment (18) and a second tubular segment (20) for use with a spirometer. The resistive element is formed of a fabric material and is disposed within the air tube at a slant angle.
申请公布号
WO0142744(A3)
申请公布日期
2002.03.07
申请号
WO2000US42395
申请日期
2000.11.30
申请人
QRS DIAGNOSTIC, LLC.;HAMILTON, DOUGLAS, L.;LICHTER, PATRICK, A.
