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US 2008/0076993 A1Published application
Medical sensor and technique for using the same
AssigneeNellcor Puritan Bennett LLC
InventorRafael Ostrowski
Life of this patent
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Abstract
A sensor is provided that is appropriate for optical detection of dissolved carbon dioxide. Such a sensor may be used for transcutaneous detection of carbon dioxide in the tissue. Alternatively, such sensors may be inserted into the tissue. Detection of dissolved carbon dioxide in the tissue may serve as a useful clinical marker for physicians.
Claims35
A sensor comprising:
- a sensor body adapted for use associated with a patient's tissue;
- an emitter disposed on the sensor body, wherein the emitter is adapted to emit at least one wavelength of light between 4200 nm and 4350 nm;
- and
- a detector disposed on the sensor body, wherein the detector is adapted to detect the wavelength of light, and wherein the emitter and the detector are adapted to have an optical distance of 200 micrometers or less.
1 more element
A system comprising:
- a sensor adapted to be coupled to a monitor, the sensor comprising:
- a sensor body adapted for use associated with a patient's tissue;
- an emitter disposed on the sensor body, wherein the emitter is adapted to emit at least one wavelength of light between 4200 nm and 4350 nm;
- and
- a detector disposed on the sensor body, wherein the detector is adapted to detect the wavelength of light, and wherein the emitter and the detector are adapted to have an optical distance of 200 micrometers or less;
- and
- a monitor adapted to calculate dissolved carbon dioxide.
4 more elements
A method of calculating dissolved carbon dioxide comprising:
- emitting a light between 4200 nm and 4350 nm into a tissue with an emitter;
- detecting the light with a detector that is 200 micrometers or less from the emitter;
- sending a signal related to the detected light to a processor;
- and
- determining a concentration of dissolved carbon dioxide in the tissue.
2 more elements
A method of manufacturing a sensor, comprising:
- providing a sensor body adapted for use associated with a patient's tissue;
- providing an emitter disposed on the sensor body, wherein the emitter is adapted to emit at least one wavelength of light between 4200 nm and 4350 nm;
- and emitter can emit both reference and signal wavelength
- providing a detector disposed on the sensor body, wherein the detector is adapted to detect the wavelength of light, and wherein the emitter and the detector are adapted to have an optical distance of 200 micrometers or less.
1 more element
Dependencies are inferred from the claim text.