METHOD AND APPARATUS FOR POST-SHOCK EVALUATION USING TISSUE OXYGENATION MEASUREMENTS
First Claim
1. A method of delivering therapy in a medical device, comprising:
- emitting light at a predetermined emitted light intensity to a volume of tissue at a plurality of wavelengths;
detecting the emitted light scattered by the volume of tissue to generate corresponding detected light intensity output signals;
adjusting the detected light intensity output signals for shifts in intensity corresponding to the emitted light intensity;
determining a tissue oxygenation index in response to only the adjusted detected light intensity output signals; and
controlling deliver of therapy in response to the determined tissue oxygenation index.
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Accused Products
Abstract
A method and apparatus for controlling delivery of therapy that includes an emitting portion emitting light at a predetermined emitted light intensity to a volume of tissue at a plurality of wavelengths, and a detecting portion detecting the emitted light scattered by the volume of tissue to generate corresponding detected light intensity output signals. A control module adjusts the detected light intensity output signals for shifts in intensity corresponding to the emitted light intensity, and determines a tissue oxygenation index in response to only the adjusted detected light intensity output signals, and a therapy delivery module controlling therapy in response to the determined tissue oxygenation index.
98 Citations
21 Claims
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1. A method of delivering therapy in a medical device, comprising:
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emitting light at a predetermined emitted light intensity to a volume of tissue at a plurality of wavelengths; detecting the emitted light scattered by the volume of tissue to generate corresponding detected light intensity output signals; adjusting the detected light intensity output signals for shifts in intensity corresponding to the emitted light intensity; determining a tissue oxygenation index in response to only the adjusted detected light intensity output signals; and controlling deliver of therapy in response to the determined tissue oxygenation index. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical device having a sensor for controlling delivery of therapy by the device, comprising:
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an emitting portion emitting light at a predetermined emitted light intensity to a volume of tissue at a plurality of wavelengths; a detecting portion detecting the emitted light scattered by the volume of tissue to generate corresponding detected light intensity output signals; a control module adjusting the detected light intensity output signals for shifts in intensity corresponding to the emitted light intensity, and determining a tissue oxygenation index in response to only the adjusted detected light intensity output signals; and a therapy delivery module controlling delivery of therapy in response to the determined tissue oxygenation index. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A computer readable medium having computer executable instructions for performing a method comprising:
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emitting light at a predetermined emitted light intensity to a volume of tissue at a plurality of wavelengths; detecting the emitted light scattered by the volume of tissue to generate corresponding detected light intensity output signals; adjusting the detected light intensity output signals for shifts in intensity corresponding to the emitted light intensity; determining a tissue oxygenation index in response to only the adjusted detected light intensity output signals; and controlling delivery of therapy in response to the determined tissue oxygenation index. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification