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IMPLANTABLE OPTICAL SENSOR AND METHOD FOR USE

  • US 20090156918A1
  • Filed: 12/12/2007
  • Published: 06/18/2009
  • Est. Priority Date: 12/12/2007
  • Status: Active Grant
First Claim
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1. An implantable medical device, comprising:

  • a hermetically sealed housing;

    a first light emitting diode (LED) enclosed within the housing and configured to detect light corresponding to a first selected light wavelength;

    a sensor module; and

    a conductive element for carrying a current signal from the first LED to the sensor module, the current signal corresponding to an intensity of the detected light, wherein the sensor module estimates, in response to the current signal, a change in a physiological condition in one of a body fluid volume and a tissue volume proximate the first LED, and wherein the intensity of the detected light is correlated to the change in the physiological condition.

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