Regional oximetry sensor

A regional oximetry sensor comprising:

• a sensor head comprising:
• a bottom surface configured to secure the sensor head to skin of a subject at a measurement site;
• a top surface opposite the bottom surface and configured to face away from the skin when the regional oximetry sensor is in use;
• and
• a first end, a second end opposite the first end, a first side extending between the first and second ends, a second side extending between the first and second ends and opposite to the first side, a length extending between the first and second ends, and a width extending between the first and second sides, wherein the first end, the second end, the first side, and the second side form a perimeter of the sensor head, and wherein the second end comprises a rounded shape that curves outward from an interior of the sensor head, and wherein the width tapers along the length of the sensor head such that the first end is narrower than the second end;
• an emitter positioned at least partially within the sensor head and configured to transmit optical radiation toward the subject's skin, wherein the emitter is positioned closer to the first end of the sensor head than to the second end of the sensor head;
• a first detector and a second detector, each of the first and second detectors positioned at least partially within the sensor head and configured to receive at least a portion of the optical radiation after attenuation by blood flow within the subject's skin, wherein the first and second detectors are positioned closer to the second end of the sensor head than to the first end of the sensor head;
• and
• a stem connected to the first end of the sensor head and configured to transmit electrical signals from the first and second detectors to a cable.

A regional oximetry sensor comprising:

• a sensor head comprising:
• a bottom surface configured to secure the sensor head to skin of a subject;
• a top surface opposite the bottom surface;
• and
• a first end, a second end opposite the first end, a first side, a second side, a length extending between the first and second ends, and a width extending between the first and second sides, and wherein the second end comprises a rounded shape and wherein the width tapers along the length of the sensor head such that the first end is narrower than the second end;
• an emitter positioned at least partially within the sensor head and configured to transmit optical radiation toward the subject's skin;
• at least one detector an positioned at least partially within the sensor head and configured to receive at least a portion of the optical radiation after attenuation by blood flow within the subject's skin;
• and
• a stem connected to the first end of the sensor head and configured to transmit electrical signals from the first and second detectors to a cable.