Surgery – Truss – Pad
Patent
1994-04-01
1995-06-06
Kamm, William E.
Surgery
Truss
Pad
128664, 128666, 356 41, A61B 500
Patent
active
054213290
ABSTRACT:
A pulse oximeter sensor with a light source optimized for low oxygen saturation ranges and for maximizing the immunity to perturbation induced artifact. Preferably, a red and an infrared light source are used, with the red light source having a mean wavelength between 700-790 nm. The infrared light source can have a mean wavelength as in prior art devices used on adults. The sensor of the present invention is further optimized by arranging the spacing between the light emitter and light detectors to minimize the sensitivity to perturbation induced artifact. The present invention optimizes the chosen wavelengths to achieve a closer matching of the absorption and scattering coefficient products for the red and IR light sources. This optimization gives robust readings in the presence of perturbation artifacts including force variations, tissue variations and variations in the oxygen saturation itself.
REFERENCES:
patent: 3638640 (1972-02-01), Shaw
patent: 3847483 (1974-11-01), Shaw et al.
patent: 4223680 (1980-09-01), Jobsis
patent: 4623248 (1986-11-01), Sperinde
patent: 4714341 (1987-12-01), Hamaguri et al.
patent: 4859057 (1989-08-01), Taylor et al.
patent: 5109849 (1992-05-01), Goodman et al.
patent: 5188108 (1993-02-01), Secker
patent: 5247932 (1993-09-01), Chung et al.
patent: 5299570 (1994-04-01), Hatshek
Effect Of Anemia On Pulse Oximeter Accurancy At Low Saturation, J. W. Severinghaus, & S. O. Koh, Journal of Clinical Monitoring, vol. 6, No. 2, Apr. 1990, pp. 85-88.
Design & Evaluation of a New Reflectance Pulse Oximeter Sensor, Y. Mendelson et al., Medical Instrumentation, vol. 22, No. 4, Aug. 1988, pp. 167-173.
Errors in 14 Pulse Oximeters During Profound Hypoxia, J. W. Severinghaus et al., Journal of Clinical Monitoring, vol. 5, No. 2, Apr. 1989, pp. 72-81.
Accuracy of Response of Six Pulse Oximeters to Profound Hypoxia, J. W. Severinghaus et al., Anesthesiology, vol. 67, No. 4, Oct. 1987, pp. 551-558.
The influence of changes in blood flow on the accuracy of pulse oximetry in humans, M. Vegfors et al., Acta Anaesthesial Scand 1992: 36: 346-349.
Evaluation of Light-Emitting Diodes for Whole Blood Oximetry, A. P. Shepherd et al., IEEE Transactions on Biomedical Engineering, vol. BME-31, No. 11, Nov. 1984, pp. 723-725.
Noninvasive Methods for Estimating In Vivo Oxygenation, D. A. Benaron et al., Clinical Pediatrics, May 1992, pp. 258-273.
In Vivo Reflectance of Blood and Tissue as a Function of Light Wavelength, W. Cui et al., IEEE Transactions on Biomedical Engineering, vol. 37, No. 6, Jun. 1990, pp. 632-639.
Various excerpts from chapter entitled, Equipment, Monitoring, and Engineering Technology IV, Anesthesiology, vol. 71, No. 3A, Sep. 1989, A366-A373.
Experimental and Clinical Evaluation of a Noninvasive Reflectance Pulse Oximeter Sensor, S. Takatani et al., Journal of Clinical Monitoring, vol. 8, No. 4, Oct. 1992, pp. 257-266.
Noninvasive measurement of regional cerebrovascular oxygen saturation in humans using optical spectroscopy, P. W. McCormick et al., Time-Resolved Spectroscopy and Imaging of Tissues (1991), SPIE vol. 1431, pp. 294-302.
Statistics of penetration depth of photons re-emitted from irradiated tissue, G. H. Weiss et al., Journal of Modern Optics, 1989, vol. 36, No. 3, pp. 349-359.
Casciani James R.
Mannheimer Paul D.
Nierlich Steve L.
Ruskewicz Stephen J.
Kamm William E.
Nasser Jr. Robert L.
Nellcor, Inc.
LandOfFree
Pulse oximeter sensor optimized for low saturation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulse oximeter sensor optimized for low saturation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse oximeter sensor optimized for low saturation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-980149