Sine saturation transform
First Claim
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1. A pulse oximeter system comprising:
- an input configured to accept from a noninvasive optical sensor signals indicative of light attenuated by body tissue of a monitored patient; and
a hardware processor, responsive to said signals, operatively communicating with said input and configured to electronically;
determine a basis function index based, at least in part, on said one or more signals;
generate at least one basis function waveform based, at least in part, on said basis function index;
determine at least one optimized basis function waveform based, at least in part, on said at least one basis function waveform;
determine signal components based, at least in part, on said one or more signals and said at least one optimized basis function waveform; and
generate a physiological measurement responsive to said signal components;
a display configured to provide visual indicia of said physiological measurement.
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Abstract
A transform for determining a physiological measurement is disclosed. The transform determines a basis function index from a physiological signal obtained through a physiological sensor. A basis function waveform is generated based on basis function index. The basis function waveform is then used to determine an optimized basis function waveform. The optimized basis function waveform is used to calculate a physiological measurement.
1032 Citations
16 Claims
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1. A pulse oximeter system comprising:
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an input configured to accept from a noninvasive optical sensor signals indicative of light attenuated by body tissue of a monitored patient; and a hardware processor, responsive to said signals, operatively communicating with said input and configured to electronically; determine a basis function index based, at least in part, on said one or more signals; generate at least one basis function waveform based, at least in part, on said basis function index; determine at least one optimized basis function waveform based, at least in part, on said at least one basis function waveform; determine signal components based, at least in part, on said one or more signals and said at least one optimized basis function waveform; and generate a physiological measurement responsive to said signal components; a display configured to provide visual indicia of said physiological measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of determining a physiological parameter of a monitored patient attached to a noninvasive optical sensor, the method comprising:
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receiving one or more signals indicative of light attenuated by body tissue of said monitored patient, said one or more signals usable to determine measurements for a physiological parameter of said monitored patient; electronically determining at least one basis function index based, at least in part, on said one or more signals; electronically generating at least one basis function waveform based, at least in part, on said at least one basis function index; electronically determining at least one optimized basis function waveform based, at least in part, on said at least one basis function waveform; electronically determining signal components of said one or more signals based, at least in part, on said at least one optimized basis function waveform and said one or more signals; and electronically processing said signal components of said one or more signals to determine an output measurement of said physiological parameter. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A pulse oximeter system capable of determining a physiological parameter of a monitored patient attached to a noninvasive optical sensor, the pulse oximeter comprising:
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means for receiving one or more signals indicative of light attenuated by body tissue of a monitored patient; means for communicating with said input and determining a basis function index based, at least in part, on said one or more signals; means for generating at least one basis function waveform based, at least in part, on said basis function index; means for determining at least one optimized basis function waveform based, at least in part, on said at least one basis function waveform; means for determining signal components based, at least in part, on said one or more signals and said at least one optimized basis function waveform; and means for generating a physiological measurement responsive to said signal components.
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Specification