Surgery – Diagnostic testing – Measuring or detecting nonradioactive constituent of body...
Reexamination Certificate
2006-09-18
2011-11-01
Winakur, Eric (Department: 3777)
Surgery
Diagnostic testing
Measuring or detecting nonradioactive constituent of body...
C600S323000
Reexamination Certificate
active
08050730
ABSTRACT:
The present invention discloses a method and apparatus for eliminating interference in pulse oxygen measurement. The method comprises the steps of: collecting a first wavelength light and a second wavelength light transmitting through the object to be measured and converting collected optic signals into electric signals to form a plethysmogram; processing the plethysmogram so as to normalize it, in order to decompose the normalized plethysmogram into a combination of an ideal plethysmogram and noise, and expand the ideal plethysmogram by using functions that can make up a complete orthonormal system; eliminating the noise in the plethysmogram through differential operation; and restoring the plethysmogram free of noise through integral operation for calculating oxygen saturation. The apparatus comprises a collecting module, a processing module, a noise eliminating module, and a restoring module. The method and apparatus suitable for the measurement of oxygen saturation under weak perfusion and movement conditions.
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Notice of Allowance mailed Nov. 7, 2008, for U.S. Appl. No. 11/316,060, filed Dec. 22, 2005.
Office Action mailed Jun. 17, 2008, for U.S. Appl. No. 11/316,060, filed Dec. 22, 2005.
Li Shunan
Li Xu
Zhang Xu
Liu Chu Chuan (JJ)
Shenzhen Mindray Bio-Medical Electrics Co., Ltd.
Vista IP Law Group LLP
Winakur Eric
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