Device and Method for Monitoring of Absolute Oxygen Saturation and Tissue Hemoglobin Concentration
First Claim
1. A method of detecting signals in a medical device, comprising:
- detecting emitted light scattered by a volume of tissue delivered along a first pathway to generate corresponding first detected light intensity output signals;
detecting emitted light scattered by the volume of tissue delivered along a second pathway different from the first pathway to generate corresponding second detected light intensity output signals;
determining whether a difference between the emitted light detected along the first pathway and the emitted light detected along the second pathway is greater than a predetermined threshold; and
altering sensing by the device in response to the determining whether a difference is greater than the predetermined threshold.
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Accused Products
Abstract
A method and medical device for detecting signals that detects emitted light scattered by a volume of tissue delivered along a first pathway at a plurality of wavelengths to generate corresponding first detected light intensity output signals, detects emitted light scattered by the volume of tissue delivered along a second pathway different from the first pathway at a plurality of wavelengths to generate corresponding second detected light intensity output signals, determines whether a difference between the emitted light detected along the first pathway and the emitted light detected along the second pathway is greater than a predetermined threshold, and alters sensing by the device in response to the determining whether a difference is greater than the predetermined threshold.
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Citations
23 Claims
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1. A method of detecting signals in a medical device, comprising:
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detecting emitted light scattered by a volume of tissue delivered along a first pathway to generate corresponding first detected light intensity output signals; detecting emitted light scattered by the volume of tissue delivered along a second pathway different from the first pathway to generate corresponding second detected light intensity output signals; determining whether a difference between the emitted light detected along the first pathway and the emitted light detected along the second pathway is greater than a predetermined threshold; and altering sensing by the device in response to the determining whether a difference is greater than the predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical device for detecting signals, comprising:
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a first optical assembly to detect emitted light scattered by a volume of tissue delivered along a first pathway to generate corresponding first detected light intensity output signals; a second optical assembly to detect emitted light scattered by the volume of tissue delivered along a second pathway different from the first pathway to generate corresponding second detected light intensity output signals; and a processor configured to determine whether a difference between the emitted light detected along the first pathway and the emitted light detected along the second pathway is greater than a predetermined threshold, and to alter sensing by the device in response to the determining whether a difference is greater than the predetermined threshold. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A computer readable medium having computer executable instructions for performing a method comprising:
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detecting emitted light scattered by a volume of tissue delivered along a first pathway at a plurality of wavelengths to generate corresponding first detected light intensity output signals; detecting emitted light scattered by the volume of tissue delivered along a second pathway different from the first pathway at a plurality of wavelengths to generate corresponding second detected light intensity output signals; determining whether a difference between the emitted light detected along the first pathway and the emitted light detected along the second pathway is greater than a predetermined threshold; and altering sensing by the device in response to the determining whether a difference is greater than the predetermined threshold.
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Specification