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;
controlling the light emission so that an emitted light intensity at each of the plurality of wavelengths is within a predetermined intensity range;
determining a tissue oxygenation index in response to only the detected light intensity output signals; and
delivering 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 controls the light emission so that an emitted light intensity at each of the plurality of wavelengths is within a predetermined intensity range, and determines a tissue oxygenation index in response to only the detected light intensity output signals, and a therapy delivery module delivers therapy in response to the determined tissue oxygenation index.
121 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; controlling the light emission so that an emitted light intensity at each of the plurality of wavelengths is within a predetermined intensity range; determining a tissue oxygenation index in response to only the detected light intensity output signals; and delivering 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 controlling the light emission so that an emitted light intensity at each of the plurality of wavelengths is within a predetermined intensity range, and determining a tissue oxygenation index in response to only the detected light intensity output signals; and a therapy delivery module delivering 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; controlling the light emission so that an emitted light intensity at each of the plurality of wavelengths is within a predetermined intensity range; determining a tissue oxygenation index in response to only the detected light intensity output signals; and delivering therapy in response to the determined tissue oxygenation index. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification