IMPLANTABLE OPTICAL SENSOR AND METHOD FOR USE
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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Abstract
An implantable medical device includes a hermetically sealed housing and a first light emitting diode (LED) enclosed within the housing configured to detect light corresponding to a selected light wavelength. A conductive element extends from the LED for carrying a current signal corresponding to the light detected by the LED, the intensity of the detected light being correlated to a change in a physiological condition in a body fluid volume or a tissue volume proximate the LED.
43 Citations
30 Claims
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1. An implantable medical device, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 28)
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10. An implantable optical sensor, comprising:
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a hermetically sealed housing; a first light emitting diode (LED) enclosed within the housing configured to detect light corresponding to a first selected light wavelength; and a conductive element extending from the first LED for carrying a current signal from the first LED to a sensor module, the current signal corresponding to an intensity of the detected light, wherein the intensity of the detected light is correlated to a change in a physiological condition in one of a body fluid volume and a tissue volume proximate the first LED. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 29)
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19. A method for sensing color for use in an implantable medical device, comprising:
- detecting light scattered by one of a body fluid volume and tissue volume using a first light emitting diode (LED) responsive to a first selected light wavelength; and
estimating a change in a physiological condition in the one of the body fluid volume and the tissue volume in response to the detected light, wherein an intensity of the detected light having the first selected light wavelength is correlated to the change in the physiological condition. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 30)
- detecting light scattered by one of a body fluid volume and tissue volume using a first light emitting diode (LED) responsive to a first selected light wavelength; and
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27. An implantable medical device, comprising:
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a hermetically sealed housing; an opto-electronic device configured for sensing a narrow band of light wavelengths; a sensor module; and a conductive element for carrying a current signal from the opto-electronic device to the sensor module, the current signal corresponding to an intensity of the sensed 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 opto-electronic device, the intensity of the sensed light being correlated to the change in the physiological condition.
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Specification