Medical sensor, reusable portion of medical sensor, and disposable portion of medical sensor

A reusable portion of a medical sensor comprising:

• a light emitter configured to emit light;
• and
• a reusable connector,
• wherein the reusable connector is configured to be coupled with a disposable connector that is a part of a disposable portion of the medical sensor;
• wherein when the reusable connector and the disposable connector are coupled, the light emitter is disposed so as to face a translucent portion supported by a support that is a part of the disposable portion adapted to be attached to a body of a subject;
• and
• wherein when the reusable connector and the disposable connector are coupled, the reusable connector is enabled to detect, via the disposable connector, a signal outputted from a light detector of the disposable portion in accordance with an amount of light incident on the light detector.

A disposable portion of a medical sensor comprising:

• a support having a translucent portion and adapted to be attached to a body of a subject;
• a light detector supported by the support and configured to output a signal corresponding to an amount of incident light;
• and
• a disposable connector supported by the support and configured to couple with a reusable connector that is a part of a reusable portion of the medical sensor,
• wherein when the reusable connector and the disposable connector are coupled, the translucent portion is disposed so as to face a light emitter that is a part of the reusable portion configured to emit light, and
• wherein the disposable connector is configured to relay the signal to the reusable connector under the condition that the reusable connector and the disposable connector are coupled, the reusable connector.