Wearable monitoring devices having sensors and light guides
A monitoring device includes a housing configured to be attached to a body of a subject. An optical emitter, optical detector, and sensor for measuring motion noise are located within the housing. Light transmissive material is in optical communication with the optical emitter and detector and is configured to deliver light from the optical emitter to one or more locations of the body of the subject and to collect light external to the housing and deliver the collected light to the detector. A signal processor is configured to receive and process signals produced by the optical detector and the motion noise sensor, and to remove noise from the signals produced by the optical detector. The signal processor may generate physiological parameters for the subject such as heart rate, blood flow, blood pressure, VO 2max , heart rate variability, respiration rate, and blood gas/analyte level.
1. A headset, comprising:
a speaker, an optical emitter, an optical detector, and a temperature sensor;
an earbud housing configured to be supported by an ear of a subject, wherein the earbud housing encloses the speaker, optical emitter, optical detector, and temperature sensor, wherein the housing comprises at least one window configured to engage a non-ear canal region of the ear when the housing is supported by the ear; and
light transmissive material associated with the at least one window and that is at least partly external to the at least one window, wherein the light transmissive material is in optical communication with the optical emitter and detector via the at least one window, wherein the light transmissive material is configured to deliver light from the optical emitter to the non-ear canal region of the ear of the subject and to collect light external to the housing and deliver the collected light to the optical detector;
wherein the temperature sensor is configured to measure a temperature of the tympanic membrane.
2. The headset of claim 1 , further comprising at least one sensor for measuring motion noise.
3. The headset of claim 2 , further comprising a signal processor configured to receive and process signals produced by the optical detector and the at least one motion noise sensor, wherein the signal processor is configured to remove noise from the signals produced by the optical detector, and wherein the signal processor is configured to process signals produced by the optical detector to generate at least one of the following physiological parameters for the subject: heart rate, blood flow, blood pressure, VO 2max , heart rate variability, respiration rate, and blood gas/analyte level.
4. The headset of claim 3 , further comprising a transmitter configured to transmit signals processed by the signal processor to a remote device.
5. A headset, comprising:
an optical emitter;
an earbud housing enclosing the optical emitter and configured to be supported by an ear of a subject, wherein the housing comprises at least one window configured to engage a non-ear canal region of the ear when the housing is supported by the ear; and
light transmissive material associated with the at least one window and that is at least partly external to the at least one window, wherein the light transmissive material is in optical communication with the optical emitter via the at least one window, and wherein the light transmissive material is configured to deliver light from the optical emitter to the non-ear canal region.
6. The headset of claim 5 , further comprising at least one sensor for measuring motion noise.
7. The headset of claim 6 , further comprising:
an optical detector enclosed within the earbud housing; and
a signal processor configured to receive and process signals produced by the optical detector and the at least one motion noise sensor, wherein the signal processor is configured to remove noise from the signals produced by the optical detector, and wherein the signal processor is configured to process signals produced by the optical detector to generate at least one of the following physiological parameters for the subject: heart rate, blood flow, blood pressure, VO 2max , heart rate variability, respiration rate, and blood gas/analyte level;
wherein the light transmissive material is in optical communication with the optical detector via the at least one window and is configured to collect light external to the housing and deliver the collected light to the optical detector.
8. The headset of claim 7 , wherein the signal processor is further configured to measure the step rate of the subject.