Medical sensor for use with headband

A medical sensor, comprising:

• a first padding layer comprising a first outer edge extent;
• a second padding layer secured to the first padding layer and comprising an emitter opening and a detector opening, wherein the second padding layer comprises a second outer edge extent that is greater than the first outer edge extent of the first padding layer;
• an emitter positioned within the emitter opening and configured to transmit one or more wavelengths of light toward a patient's tissue;
• and
• a detector positioned within the detector opening and configured to receive the one or more wavelengths of light transmitted by the emitter to measure a physiological parameter of the patient;
• wherein the second padding layer is positioned between a patient-contacting surface of the medical sensor and the first padding layer, and an outer edge of the second padding layer is configured to curve in a direction generally away from the patient as the medical sensor is compressed against the patient's tissue.

A patient monitoring system, comprising:

• a medical sensor, comprising:
• a first padding layer;
• a second padding layer secured to the first padding layer and comprising a emitter well and a detector well;
• an emitter positioned within the emitter well and configured to transmit one or more wavelengths of light toward a patient's tissue;
• an emitter lens disposed over the emitter and comprising an emitter lens surface adapted to face the patient's tissue upon placement of the medical sensor on the patient;
• a detector positioned within the detector well and configured to receive the one or more wavelengths of light transmitted by the emitter to measure a physiological parameter of the patient;
• a detector lens disposed over the detector and comprising a detector lens surface adapted to face the patient's tissue upon placement of the medical sensor on the patient;
• and
• an island padding layer secured to the second padding layer and comprising a second emitter opening and a second detector opening, wherein the second emitter and detector openings are distinct from one another and are configured to enable light transmission from and to the emitter and the detector, respectively, and wherein the island padding layer comprises a first outer edge extent that is smaller than a second outer edge extent of the second padding layer.