Method for distinguishing respiratory events in a gas analyzer
US5129401A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Jan 25, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/121
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas analyzer system and method for detecting and displaying information of gases in a respiratory gas stream, comprising an optical bench including a gas pathway for the flow of a gas stream through the optical bench, a flow shaping inlet at the entrance to the optical bench's gas pathway, two infrared detection channel assemblies for measuring the partial pressures of the gases in the respiratory gas stream, a pressure sensor for measuring the pressure within the gas pathway, a temperature sensor for measuring the temperature within the optical bench, and a flow rate sensor for measuring the gas flow rate through the gas pathway, circuitry for processing the detected partial pressures of the gases and the measured values for pressure, temperature, and flow rate, and for providing output signals indicative of processed measured values, the detected partial pressures of the gasses, and characterization information with respect to the optical bench components; analog input circuitry for processing the signals output from the optical bench for input to analog processing circuitry; analog processing circuitry for processing and correcting at least the detected partial pressures of th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.