公开(公告)号：EP0289581A4

公开(公告)日：1990-12-12

申请号：EP87907697

申请日：1987-10-16

Applicant: NELLCOR INCORPORATED

Inventor： CORENMAN, JAMES, E. ,  GOLDBERGER, DANIEL, S. ,  BRAIG, JAMES, R. ,  ROJAS, EMIL, P. ,  RICHARDS, EDWARD, M. ,  GALLUP, DAVID, A.

IPC: A61B5/08 ,  A61B5/083 ,  G01N21/31 ,  G01N21/35 ,  G01N21/61 ,  G06F15/46 ,  G01N21/37

CPC classification number: A61B5/083 ,  G01N21/3504 ,  G01N21/61 ,  G01N2021/3129 ,  G01N2201/121

Abstract: An improved gas analyzer system and method for detecting and displaying the constituent gases of a respiratory gas stream, the system comprising an optical bench (109) comprising a gas pathway for the flow of a gas stream, a flow shaping inlet, three infrared detection channel assemblies for measuring the partial pressures of constituent gases, and measuring sensitivity changes in the detectors of the three infrared detection channel assemblies, a pressure sensor for measuring the pressure within the gas pathway, a temperature sensor for measuring the temperature within the optical bench, a flow rate sensor for measuring the gas flow rate through the gas pathway; analog processing circuitry (124) for processing the detected partial gas pressures, sensitivity changes, the measured values for pressure, temperature, and flow rate, and display processing circuitry (128).