Ear sensor
First Claim
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1. An in-ear physiological measurement device comprising:
- a base portion;
an extension portion configured to extend at least partially into an ear of a user, the extension portion including;
an outer surface that extends substantially cylindrically around an axis of the extension portion and is configured to be positioned at least partially in the ear of the user, wherein the axis extends from the base portion to an end of the extension portion configured to be positioned in the ear of the user; and
an end surface that joins the outer surface at the end of the extension portion;
at least one light emitter configured to emit light into an ear tissue site of the user; and
at least one light detector configured to output a signal responsive to at least a portion of the emitted light after attenuation by ear tissue of the ear tissue site, the signal indicative of at least one physiological parameter of the user,wherein the at least one light emitter and at least one light detector are positioned on the outer surface of the substantially cylindrical extension portion and not on the end surface of the extension portion, andwherein the at least one light emitter and the at least one light detector are positioned spaced apart relative to each other along an axis parallel to the axis of the extension portion.
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Abstract
An ear sensor provides a sensor body having a base, legs extending from the base and an optical housing disposed at ends of the legs opposite the base. An optical assembly is disposed in the housing. The sensor body is flexed so as to position the housing over a concha site. The sensor body is unflexed so as to attach the housing to the concha site and position the optical assembly to illuminate the concha site. The optical assembly is configured to transmit optical radiation into concha site tissue and receive the optical radiation after attenuation by pulsatile blood flow within the tissue.
852 Citations
17 Claims
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1. An in-ear physiological measurement device comprising:
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a base portion; an extension portion configured to extend at least partially into an ear of a user, the extension portion including; an outer surface that extends substantially cylindrically around an axis of the extension portion and is configured to be positioned at least partially in the ear of the user, wherein the axis extends from the base portion to an end of the extension portion configured to be positioned in the ear of the user; and an end surface that joins the outer surface at the end of the extension portion; at least one light emitter configured to emit light into an ear tissue site of the user; and at least one light detector configured to output a signal responsive to at least a portion of the emitted light after attenuation by ear tissue of the ear tissue site, the signal indicative of at least one physiological parameter of the user, wherein the at least one light emitter and at least one light detector are positioned on the outer surface of the substantially cylindrical extension portion and not on the end surface of the extension portion, and wherein the at least one light emitter and the at least one light detector are positioned spaced apart relative to each other along an axis parallel to the axis of the extension portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification