Noninvasive detection of a physiologic parameter within a body tissue of a patient

The device of clam 2, wherein the means for reducing interference is adapted to reduce interference from electromagnetic radiation.

A device for contacting a surface of a tissue within the patient's body to determine a physiologic parameter of the patient, comprising:

• a means for reducing interference in a sensing area adjacent to a measurement region in the tissue, wherein the means represents an integral portion of a probe;
• and
• a sensor responsive to the physiologic parameter, wherein the sensor is located within the sensing area and within the probe.

A device for contacting a surface of a tissue within a patient's body to determine a physiologic parameter of the patient, comprising:

• a sensor responsive to the physiologic parameter;
• and
• a probe containing the sensor, wherein the probe is constructed to allow the sensor to be secured at a sensing area adjacent to a measurement region in the tissue without relying solely on an adhesive and without substantially disturbing blood flow within the tissue.