IMPLANTABLE TISSUE PERFUSION SENSING SYSTEM AND METHOD
First Claim
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1. A medical device for sensing cardiac events, comprising:
- a plurality of light sources capable of emitting light at a plurality of wavelengths;
a detector to detect the emitted light; and
a processor to generate an ambient light measurement in response to ambient light detected by the detector, generate a plurality of light measurements in response to the emitted light detected by the detector, and adjust the plurality of light measurements in response to the ambient light measurement.
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Abstract
A medical device for sensing cardiac events that includes a plurality of light sources capable of emitting light at a plurality of wavelengths, and a detector to detect the emitted light. A processor generates an ambient light measurement in response to ambient light detected by the detector, generates a plurality of light measurements in response to the emitted light detected by the detector, and adjusts the plurality of light measurements in response to the ambient light measurement.
43 Citations
20 Claims
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1. A medical device for sensing cardiac events, comprising:
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a plurality of light sources capable of emitting light at a plurality of wavelengths; a detector to detect the emitted light; and a processor to generate an ambient light measurement in response to ambient light detected by the detector, generate a plurality of light measurements in response to the emitted light detected by the detector, and adjust the plurality of light measurements in response to the ambient light measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of adjusting sensing in a medical device, comprising:
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determining ambient light received at a detector to generate a first ambient light measurement; determining light emitted by a plurality of light sources and received at the detector to generate a plurality of light measurements at a plurality of wavelengths; determining ambient light received at the detector to generate a second ambient light measurement; and adjusting the generated plurality of light measurements in response to the first ambient light measurement and the second ambient light measurement. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification