Patent · US Active

On-airway pulmonary function tester

US10299701B2 · kind B2 · utility

7Cited by
2References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 6, 2016
Grant dateMay 28, 2019
Priority date—
Expiry dateAug 8, 2037

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N33/0009
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A compact, on-airway, respiratory gas analyzer for performing pulmonary function tests incorporates an IR spectroscopy light guide having a curved, rather than linear, sample chamber that lies transverse to a direction of respiratory gas flow. Cooperating with the sample chamber is an impact plate that functions to steer respiratory and test gases impinging on the impact plate into the curved sample chamber. A source of IR energy is at one end of the sample chamber and an electro-optical sensor responsive to IR energy is disposed at an opposite end of the chamber. The respiratory gas analyzer also includes gas flow paths and valving for carrying out lung capacity and lung diffusion tests.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.