Multi-stream data collection system for noninvasive measurement of blood constituents
First Claim
Patent Images
1. A user-worn physiological measurement device comprising:
- one or more emitters configured to emit light into tissue of a user;
a first set of photodiodes arranged on a substrate, wherein;
the first set of photodiodes comprises at least four photodiodes, andthe photodiodes of the first set of photodiodes are connected to one another in parallel to provide a first signal stream;
a second set of photodiodes arranged on the substrate, wherein;
the second set of photodiodes comprises at least four photodiodes, andthe photodiodes of the second set of photodiodes are connected to one another in parallel to provide a second signal stream;
a cover comprising a protruding convex surface, wherein the protruding convex surface extends over all of the photodiodes of the first and second sets of photodiodes arranged on the substrate, and wherein at least a portion of the protruding convex surface is rigid;
one or more processors configured to;
receive a signal stream responsive to at least one of the first signal stream or the second signal stream, wherein the signal stream is responsive to at least a physiological parameter of the user; and
process the signal stream to determine measurements of the physiological parameter;
a network interface configured to communicate with a mobile phone;
a touch-screen display configured to provide a user interface, wherein;
the user interface is configured to display indicia responsive to the measurements of the physiological parameter, andan orientation of the user interface is configurable responsive to a user input;
a wall that surrounds at least the first set of photodiodes, wherein the cover is above the wall and the substrate;
a storage device configured to at least temporarily store at least the measurements of the physiological parameter; and
a strap configured to position the physiological measurement device on the user.
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Abstract
The present disclosure relates to noninvasive methods, devices, and systems for measuring various blood constituents or analytes, such as glucose. In an embodiment, a light source comprises LEDs and super-luminescent LEDs. The light source emits light at least wavelengths of about 1610 nm, about 1640 nm, and about 1665 nm. In an embodiment, the detector comprises a plurality of photodetectors arranged in a special geometry comprising one of a substantially linear substantially equal spaced geometry, a substantially linear substantially non-equal spaced geometry, and a substantially grid geometry.
1379 Citations
29 Claims
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1. A user-worn physiological measurement device comprising:
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one or more emitters configured to emit light into tissue of a user; a first set of photodiodes arranged on a substrate, wherein; the first set of photodiodes comprises at least four photodiodes, and the photodiodes of the first set of photodiodes are connected to one another in parallel to provide a first signal stream; a second set of photodiodes arranged on the substrate, wherein; the second set of photodiodes comprises at least four photodiodes, and the photodiodes of the second set of photodiodes are connected to one another in parallel to provide a second signal stream; a cover comprising a protruding convex surface, wherein the protruding convex surface extends over all of the photodiodes of the first and second sets of photodiodes arranged on the substrate, and wherein at least a portion of the protruding convex surface is rigid; one or more processors configured to; receive a signal stream responsive to at least one of the first signal stream or the second signal stream, wherein the signal stream is responsive to at least a physiological parameter of the user; and process the signal stream to determine measurements of the physiological parameter; a network interface configured to communicate with a mobile phone; a touch-screen display configured to provide a user interface, wherein; the user interface is configured to display indicia responsive to the measurements of the physiological parameter, and an orientation of the user interface is configurable responsive to a user input; a wall that surrounds at least the first set of photodiodes, wherein the cover is above the wall and the substrate; a storage device configured to at least temporarily store at least the measurements of the physiological parameter; and a strap configured to position the physiological measurement device on the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A user-worn physiological measurement device comprising:
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one or more emitters configured to emit light into tissue of a user; a first set of photodiodes, the first set of photodiodes comprising at least four photodiodes, the photodiodes of the first set of photodiodes connected to one another in parallel to provide a first signal stream; a second set of photodiodes, the second set of photodiodes comprising at least four photodiodes, the photodiodes of the second set of photodiodes connected to one another in parallel to provide a second signal stream; one or more processors configured to; receive a signal stream responsive to at least one of the first signal stream or the second signal stream, wherein the signal stream is responsive to at least a physiological parameter of the user; and process the signal stream to determine measurements of the physiological parameter; a network interface configured to communicate with a mobile phone; a touch-screen display configured to provide a user interface, wherein the user interface is configured to display indicia responsive to the measurements of the physiological parameter; and a storage device configured to at least temporarily store at least the measurements of the physiological parameter. - View Dependent Claims (26, 27, 28)
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29. A user-worn physiological measurement device comprising:
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one or more emitters configured to emit light into tissue of a user; a first set of photodiodes arranged on a first surface of a substrate, wherein; the first set of photodiodes comprises at least four photodiodes, and the photodiodes of the first set of photodiodes are connected to one another in parallel to provide a first signal stream; a second set of photodiodes arranged on the first surface of the substrate, wherein; the second set of photodiodes comprises at least four photodiodes, and the photodiodes of the second set of photodiodes are connected to one another in parallel to provide a second signal stream; a cover comprising a protruding convex surface, wherein; the protruding convex surface extends over all of the photodiodes of the first and second sets of photodiodes arranged on the substrate, at least a portion of the protruding convex surface is rigid, the protruding convex surface is configured to be located between tissue of the user and the photodiodes of the first and second sets of photodiodes when the physiological measurement device is worn by the user, and at least part of the protruding convex surface is light permeable to allow light to reach at least one of the photodiodes of the first or second sets of photodiodes; an at least partially opaque layer comprising windows that allow light to pass through to corresponding photodiodes of the first and second sets of photodiodes; preprocessing electronics configured to preprocess the at least one of the first signal stream or the second signal stream, wherein the preprocessing electronics comprise at least; a first common amplifier configured to receive the first signal stream from the first set of photodiodes at an input of the first common amplifier and at least amplify the first signal stream, and a second common amplifier configured to receive the second signal stream from the second set of photodiodes at an input of the second common amplifier and at least amplify the second signal stream; one or more processors configured to; receive a signal stream responsive to at least one of the first signal stream or the second signal stream after the preprocessing of the at least one of the first signal stream or the second signal stream, wherein the signal stream is responsive to at least a physiological parameter of the user, and wherein the physiological parameter comprises at least one of;
pulse rate, glucose, oxygen, oxygen saturation, methemoglobin, total hemoglobin, carboxyhemoglobin, or carbon monoxide; andprocess the signal stream to determine measurements of the physiological parameter; a network interface configured to communicate at least the measurements of the physiological parameter to at least one of;
a mobile phone or a computer network;a touch-screen display configured to provide a user interface, wherein the user interface is configured to display indicia responsive to the measurements of the physiological parameter; a wall that surrounds at least the first set of photodiodes, wherein; the cover is above the wall and the substrate, the wall operably connects to the substrate on one side of the wall, the wall operably connects to the cover on an opposing side of the wall, and the wall surrounds at least the first set of photodiodes and the second set of photodiodes on the first surface; a storage device configured to at least temporarily store at least the measurements of the physiological parameter; and a strap configured to position the physiological measurement device on the user, wherein; the physiological measurement device comprises a single unit wearable by the user, the single unit encompassing at least;
the one or more emitters, the first and second sets of photodiodes, the cover, the wall, the one or more processors, the network interface, and the storage device,a surface of the single unit positions the touch-screen display, and wherein the strap is attached to the single unit, at least one of the photodiodes is configured to receive light that has been attenuated by tissue of the user, and the attenuated light is reflected by the tissue.
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Specification