Pulse amplitude indexing method and apparatus

Details Pulse amplitude indexing method and apparatus Pulse amplitude indexing method and apparatus

2007-02-27

2007-02-27

Winakur, Eric (Department: 3768)

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

C600S322000, C600S323000

Reexamination Certificate

active

11270240

ABSTRACT:
The invention is method and apparatus for determining a physiological characteristic by detecting the intensity of light following tissue absorption at two wavelengths, estimating the pulse amplitude and indexing a calculated physiological characteristic to the estimated pulse amplitude. In one embodiment, the ratio of logarithms of absorbance signal amplitude is indexed to the pulse amplitude to improve the accuracy of arterial oxygen saturation as determined by a pulse oximeter.

REFERENCES:
patent: 3704706 (1972-12-01), Herczfeld et al.
patent: 3734086 (1973-05-01), Phelps, Sr.
patent: 4407290 (1983-10-01), Wilber
patent: 4934372 (1990-06-01), Corenman et al.
patent: 5193543 (1993-03-01), Yelderman
patent: 5448991 (1995-09-01), Polson et al.
patent: 5490505 (1996-02-01), Diab et al.
patent: 6036642 (2000-03-01), Diab et al.
patent: 6157850 (2000-12-01), Diab et al.
patent: 6206830 (2001-03-01), Diab et al.
patent: 6263222 (2001-07-01), Diab et al.
patent: 6421549 (2002-07-01), Jacques
patent: 6480729 (2002-11-01), Stone
patent: 6537225 (2003-03-01), Mills
patent: 6594511 (2003-07-01), Stone et al.
patent: 6711425 (2004-03-01), Reuss
patent: RE38492 (2004-04-01), Diab et al.
patent: 6719705 (2004-04-01), Mills
patent: 6819950 (2004-11-01), Mills
patent: 6921367 (2005-07-01), Mills
patent: 2004/0068164 (2004-04-01), Diab et al.
patent: 2005/0177046 (2005-08-01), Mills

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