Sensor for analyzing molecular species

Details Sensor for analyzing molecular species Sensor for analyzing molecular species

1994-07-15

1996-11-05

Sykes, Angela D.

Surgery

Truss

Pad

128633, A62B 700, A61B 5097, A61B 500

Patent

active

055706975

ABSTRACT:
An on-airway breath-by-breath oxygen sensor is described which has the necessary low weight, fast response and high precision required for oxygen consumption measurement. A vertical-cavity surface-emitting laser (VCSEL) is continuously tuned to emit light at the resonance of oxygen, or more generally, the molecular species of interest. The light beam is directed through a sample containing the molecular species of interest onto a detector. The amount of light absorbed is approximately proportional to the concentration of the molecular species of interest in the sample.

REFERENCES:
patent: 4522204 (1985-06-01), Kurahashi et al.
patent: 4648396 (1987-03-01), Raemer
patent: 4730112 (1988-03-01), Wong
patent: 4807637 (1989-02-01), Bjorkholm
patent: 4934816 (1990-06-01), Silver et al.
patent: 4955946 (1990-09-01), Mount et al.
patent: 4998018 (1991-03-01), Kurahashi et al.
patent: 5092342 (1992-03-01), Hattendorff et al.
patent: 5095900 (1992-03-01), Fertig et al.
patent: 5130544 (1992-07-01), Nilsson
patent: 5173432 (1992-12-01), Lefkowitz et al.
patent: 5282473 (1994-02-01), Braig et al.
patent: 5355880 (1994-10-01), Thomas et al.
patent: 5382163 (1995-01-01), Putnam
patent: 5423320 (1995-06-01), Salzman et al.
Perilainen, "Sensors for Oxygen Analysis: Paramagnetic, Electrochemical, Polarographic, and Zirconium Oxide Technologies," Biomedical Instrumentation & Technology, Nov./Dec. 1989, pp. 462-466.
Sodal, "The Medical Mass Spectrometer," Biomedical Instrumentation & Technology, Nov./Dec. 1989, pp. 469-476.
Westenskow & Coleman, "Raman Scattering for Respiratory Gas Monitoring in the Operating Room: Advantages, Specifications, and Future Advances," Biomedical Instrumentation & Technology, Nov./Dec. 1989, pp. 485-489.
Olbright, Bryan, Fu, Apte, Bloom & Lee, "Linewidth, tunability, and VHF-Millimeter Wave Frequency Synthesis of Vertical-Cavity GaAs Quantum-Well Surface-Emitting Laser Diode Arrays," IEEE Photonics Technology Letters, vol. 3, No. 9, Sep. 1991, pp. 779-781.
Goldstein, Adler-Golden, Lee & Bien, "Measurement of molecular concentrations and line parameters using line-locked second harmonic spectroscopy with an AIGaAs diode laser," Applied Optics, vol. 31, No. 18, Jun. 20, 1992, pp. 3409-3415.
Cooper & Martinelli, "Near-infrared diode lasers monitor molecular species," Laser Focus World, Nov. 1992, pp. 133-146.
Chernin, "New Generation of Multipass Systems," SPIE vol. 2112, pp. 99-108.
Barnikol, W. K. R., et al. "Microdetector for Rapid Changes of Oxygen Partial Pressure During the Respiratory Cycle in Small Laboratory Animals," [Rev.Sci.Instrum.] 59 (7), Jul. 1988, pp. 1204-1208.

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