WO2016055853A1 - Système réglable à porter sur soi pourvu d'une plate-forme à capteurs modulaire - Google Patents

Système réglable à porter sur soi pourvu d'une plate-forme à capteurs modulaire Download PDF

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Publication number
WO2016055853A1
WO2016055853A1 PCT/IB2015/001997 IB2015001997W WO2016055853A1 WO 2016055853 A1 WO2016055853 A1 WO 2016055853A1 IB 2015001997 W IB2015001997 W IB 2015001997W WO 2016055853 A1 WO2016055853 A1 WO 2016055853A1
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WO
WIPO (PCT)
Prior art keywords
wearable system
sensor module
sensor
module
adjustable
Prior art date
Application number
PCT/IB2015/001997
Other languages
English (en)
Inventor
Frank Settemo NUOVO
Sheldon George PHILLIPS
James Schuessler
Original Assignee
Samsung Electronics Co, Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US14/719,043 external-priority patent/US9592007B2/en
Application filed by Samsung Electronics Co, Ltd filed Critical Samsung Electronics Co, Ltd
Publication of WO2016055853A1 publication Critical patent/WO2016055853A1/fr

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/683Means for maintaining contact with the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802Sensor mounted on worn items
    • A61B5/681Wristwatch-type devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/04Constructional details of apparatus
    • A61B2560/0443Modular apparatus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/14Coupling media or elements to improve sensor contact with skin or tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/01Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053Measuring electrical impedance or conductance of a portion of the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25Bioelectric electrodes therefor

Definitions

  • the disclosure relates to a wearable device for monitoring and communicating physiological information of an individual, among other things and in particular, a wearable modular sensor platform that is adjustable about a body part.
  • wearable devices have a number of disadvantages. They are generally bulky, uncomfortable and poorly suited for long-term use on an outpatient or personal basis. Such devices are also not well suited for long-term wear by infants or uncooperative patients, such as a patient with schizophrenia who may unexpectedly remove existing sensors. Nor are such wearable devices well suited for animals that are ambulatory or that require monitoring for a long period. Aside from those disadvantages, the wearable devices to date have not been suitable as a lifestyle product that also is capable of sensitive physiological and environmental measurements, processing and communications.
  • Another disadvantage is that existing sensors have cumbersome electrodes. As a result, such devices are generally encased in relatively large plastic shell cases and are not comfortable or suitable for wearing for more than a few hours, and as such, lack certain advantages of more suitable locations for physiological measurements. In the case of a watch, the sensors are typically located on the top of the wrist with the display. In these devices, continuous and long term wear is not practical because, among other things, using rubberized electrodes, standard metal medical electrodes and the related adhesive pads are uncomfortable, particularly when used on older users and those with sensitive skin. Continuous wearing of these devices also tends to cause skin irritation if the portion of the skin contacted is not suitably exposed to air for days or weeks during use.
  • a further disadvantage is that existing systems with wireless connectivity, for example, generally exhibit a short battery life. They are not suitable for continuous or long term wireless transmission for more than a few hours. Continuous physiological data collection may be necessary, however, over days, weeks and months in cases, for example, where chronic conditions exist (e.g. sleep disorders, diabetes, etc.).
  • Existing wireless devices have a further disadvantage of being generally limited to a single user and do not support robust data collection and analysis remote of the device. In addition, existing devices generally do not provide much more than rudimentary board data analysis. [0008] In short, devices to date do not address the size and comfort issues (e.g.
  • a wearable system and methods for measuring physiological data from a device worn about a body part of a user comprising a base module, a first sensor module, and a second sensor module.
  • the base module comprises a display and a base computing unit.
  • the first sensor module measures a gravitational force experienced by the device.
  • the second sensor module is spatially positioned relative to the base module and over a portion of the body part for measuring one or more physiological characteristics calibrated based on the gravitational force measured with the first sensor module.
  • the base module is adjustably positioned by the user relative to the second sensor module such that the sensor module maintains its positioning over the body part for sufficient contact with the body part for accurate measurements of physiological data regardless of the anthropometric size of the body part.
  • FIG. 1 is a diagram illustrating an embodiment of a modular sensor platform.
  • FIG. 2 is an embodiment of the modular sensor platform of FIG. 1 .
  • FIG. 3 is a diagram illustrating another embodiment of a modular sensor platform.
  • FIG. 4 is a block diagram illustrating one embodiment of the modular sensor platform, including a bandwidth sensor module in connection with components comprising the base computing unit and battery.
  • FIG. 5 is a cross-sectional illustration of the wrist with a band mounted sensor in contact for an embodiment used about the wrist.
  • FIG. 6 is a diagram illustrating another embodiment of a modular sensor platform with a self-aligning sensor array system in relation to use about the wrist.
  • FIG. 7 is a block diagram illustrating components of the modular sensor platform including example sensors and an optical electric unit self-aligning sensor array system in a further embodiment.
  • FIG. 8 illustrates an embodiment of a side view of the adjustable wearable system with a sensor module positioned on the band.
  • FIG. 9 illustrates a side view of the adjustable wearable system with a sensor module integral to the band.
  • FIG. 10 illustrates a side view of another embodiment of the adjustable wearable system with a sensor module where the band over straps the sensor module.
  • FIG. 1 1 illustrates a side view of another embodiment of the view of the adjustable wearable system with a modular sensor module with a segmented band connected by flex connections.
  • FIG. 12 illustrates another embodiment of view of the adjustable wearable system with a self-adhering sensor module symmetrically disposed from a self-adhering display unit.
  • FIG. 13 illustrates a perspective view of an embodiment of the view of the adjustable wearable system with a sensor module comprising a micro-adjustable sensor configuration in a first position.
  • FIG. 14 illustrates another embodiment of the adjustable wearable system with a sensor module comprising a micro-adjustable sensor configuration in a second position relative to that shown in FIG. 13.
  • FIG. 15 illustrates a perspective view of an embodiment of the view of the adjustable wearable system with a sensor module comprising a rotatable sensor unit configuration in a first position.
  • FIG. 16 illustrates another embodiment of the adjustable wearable system with a sensor module comprising a rotatable sensor unit configuration in a second position relative to that shown in FIG. 15.
  • FIG. 17 illustrates a perspective view of an embodiment of the view of the adjustable wearable system with a sensor module comprising a sliding sensor unit configuration in a first position.
  • FIG. 18 illustrates another embodiment of the adjustable wearable system with a sensor module comprising a sliding sensor unit configuration in a second position relative to that shown in FIG. 17.
  • a component or module means, but is not limited to, a software or hardware component, such as a field programmable gate array (FPGA) or ASIC, which performs certain tasks.
  • a component or module may advantageously be configured to reside in the addressable storage medium and configured to execute on one or more processors.
  • a component or module may include, by way of example, components, such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.
  • Embodiments of the invention relate to a system for providing a wearable device for monitoring an electrocardiogram (ECG) through a wrist of a user.
  • ECG electrocardiogram
  • FIGS. 1 and 2 are diagrams illustrating embodiments of a modular sensor platform or wearable sensor platform 10.
  • FIGS. 1 and 2 depict a perspective view of embodiments of the wearable sensor platform 10, while FIG. 3 depicts an exploded side view of another embodiment of the wearable sensor platform 10.
  • the components of the wearable sensor platform in FIGS. 1 and 2 may be substantially the same, the locations of modules and/or components may differ.
  • the wearable sensor platform 10 may be implemented as a smart watch or other wearable device that fits on part of a body, here a user's wrist.
  • the wearable sensor platform 10 may include a base module 18, a strap or a band 12, a clasp 34, a power source, a removable power source, or a battery 22, and a removable sensor module, a micro-adjustable sensor module, or a sensor module 16 coupled to the band 12.
  • the modules and/or components of the wearable sensor platform 10 may be removable by an end user (e.g., a consumer, a patient, a doctor, etc.).
  • the modules and/or components of the wearable sensor platform 10 are integrated into the wearable sensor platform 10 by the manufacturer and may not be intended to be removed by the end user.
  • the wearable sensor platform 10 may be waterproof or water sealed.
  • the band 12 may be one-piece or modular.
  • the band 12 may be made of a fabric.
  • the band 12 may also be configured as a multi-band or in modular links.
  • the band 12 may include a latch or a clasp mechanism to retain the watch in place in certain implementations.
  • the band 12 will contain wiring (not shown) connecting, among other things, the base module 18 and sensor module 16. Wireless communication, alone or in combination with wiring, between base module 18 and sensor module 16 is also contemplated.
  • the sensor module 16 may be removably attached on the band 12, such that the sensor module 16 is located at the bottom of the wearable sensor platform 10 or, said another way, on the opposite end of the base module 18. Positioning the sensor module 16 in such a way to place it in at least partial pressure contact with the skin on the underside of the user's wrist to allow the sensor units 28 to sense physiological data from the user.
  • the contacting surface(s) of the sensor units 28 may be positioned above, at or below, or some combination such positioning, the surface of the sensor module 16.
  • the base module 18 attaches to the band 12 such that the base module 18 is positioned at top of the wearable sensor platform 10. Positioning the base module 18 in such a way to place it in at least partial contact with the top side of the wrist.
  • the base module 18 may include a base computing unit 20, and a graphical user interface (GUI) or a display 26 on which a graphical user interface (GUI) may be provided.
  • the base module 18 performs functions including, for example, displaying time, performing calculations and/or displaying data, including sensor data collected from the sensor module 16.
  • the base module 18 may wirelessly communicate with other sensor module(s) (not shown) worn on different body parts of the user to form a body area network, or with other wirelessly accessible devices (not shown), like a smartphone, tablet, display or other computing device.
  • the base computing unit 20 may include a processor 36, memory 38, input/output 40, a communication interface 42, a battery 22 and a set of sensors 44, such as an accelerometer/gyroscope 46 and thermometer 48.
  • the base module 18 can also be other sizes, cases, and/or form factors, such as, for example, oversized, in-line, round, rectangular, square, oval, Carre, Carage, Tonneau, asymmetrical, and the like.
  • the sensor module 16 collects data (e.g., physiological, activity data, sleep statistics and/or other data), from a user and is in communication with the base module 18.
  • the sensor module 16 includes sensor units 28 housed in a sensor plate 30.
  • sensor units 28 of the type disclosed may be particularly suited for implementation of a sensor measurement in a wristwatch.
  • the sensor module 16 is adjustably attached to the band 12 such that the base module 18 is not fixedly positioned, but can be configured differently depending on the physiological make-up of the wrist.
  • the sensor units 28 may include an optical sensor array, a thermometer, a galvanic skin response (GSR) sensor array, a bioimpedance (BioZ) sensor array, an electrocardiogram or electrocardiography (ECG) sensor, or any combination thereof.
  • the sensors units 28 may take information about the outside world and supply it to the wearable sensor platform 10.
  • the sensor units 28 can also function with other components to provide user or environmental input and feedback to a user.
  • a MEMS accelerometer may be used to measure information such as position, motion, tilt, shock, and vibration for use by processor 36.
  • Other sensor(s) may also be employed.
  • the sensor module 16 may also include a sensor computing unit 32.
  • the sensor units 28 may also include biological sensors (e.g., pulse, pulse oximetry, body temperature, blood pressure, body fat, etc.), proximity detectors for detecting the proximity of objects, and environmental sensors (e.g., temperature, humidity, ambient light, pressure, altitude, compass, etc.).
  • biological sensors e.g., pulse, pulse oximetry, body temperature, blood pressure, body fat, etc.
  • proximity detectors for detecting the proximity of objects
  • environmental sensors e.g., temperature, humidity, ambient light, pressure, altitude, compass, etc.
  • the clasp 34 also provides an ECG electrode.
  • One or more sensor units 28 and the ECG electrode on the clasp 34 can form a complete ECG signal circuit when the clasp 34 is touched.
  • the sensor computing unit 32 may analyze data, perform operations (e.g., calculations) on the data, communicate data and, in some embodiments, may store the data collected by the sensor units 28.
  • the sensor computing unit 32 receives (for example, data indicative of an ECG signal) from one or more of the sensors of the sensor units 28, and processes the received data to form a predefined representation of a signal (for example, an ECG signal).
  • the sensor computing unit 32 can also be configured to communicate the data and/or a processed form of the received data to one or more predefined recipients, for example, the base computing unit 20, for further processing, display, communication, and the like.
  • the base computing unit 20 and/or sensor computing unit determine whether data is reliable and determine an indication of confidence in the data to the user.
  • the sensor computing unit 32 may be integrated into the sensor plate 30, it is shown by dashed lines in FIG. 1 . In other embodiments, the sensor computing unit 32 may be omitted or located elsewhere on the wearable sensor platform 10 or remotely from the wearable sensor platform 10. In an embodiment where the sensor computing unit 32 may be omitted, the base computing unit 20 may perform functions that would otherwise be performed by the sensor computing unit 32. Through the combination of the sensor module 16 and base module 18, data may be collected, transmitted, stored, analyzed, transmitted and presented to a user.
  • the wearable sensor platform 10 depicted in FIG. 1 is analogous to the wearable sensor platform 10 depicted in FIGS. 2 and 3.
  • the wearable sensor platform 10 includes a band 12, a battery 22, a clasp 34, a base module 18 including a display 26, a base computing unit 20, and a sensor module 16 including sensor units 28, a sensor plate 30, and an optional sensor computing unit 32.
  • the locations of certain modules have been altered.
  • the clasp 34 is closer in FIG. 3 to the display/GUI 26 than clasp 34 is in FIG. 1 .
  • the battery 22 is housed with the base module 18. In the embodiment shown in FIG. 1 , the battery 22 is housed on the band 12, opposite to the display 26.
  • the battery 22 charges the base module 18 and optionally an internal or permanent battery (not shown) of the base module 18. In this way, the wearable sensor platform 10 may be worn continuously. Thus, in various embodiments, the locations and/or functions of the modules and other components may be changed.
  • FIG. 3 is a diagram illustrating one embodiment of a modular sensor platform 10 and components comprising the base module 18.
  • the wearable sensor platform 10 is analogous to the wearable sensor platform 10 in FIGS. 1 and 2 and thus includes analogous components having similar reference labels.
  • the wearable sensor platform 10 may include a band 12, and a sensor module 16 attached to band 12.
  • the sensor module 16 may further include a sensor plate 30 attached to the band 12, and sensor units 28 attached to the sensor plate 30.
  • the sensor module 16 may also include a sensor computing unit 32.
  • the wearable sensor platform 10 includes a base computing unit 20 in FIG. 3 analogous to the base computing unit 20 and one or more batteries 22 in FIG. 3.
  • the base computing unit 20 may communicate with or control the sensor computing unit 32 through a communication interface 42.
  • the communication interface 42 may comprise a serial interface.
  • the base computing unit 20 may include a processor 36, a memory 38, input/output (I/O) 40, a display 26, a communication interface 42, sensors 44, and a power management unit 88.
  • the processor 36, the memory 38, the I/O 40, the communication interface 42 and the sensors 44 may be coupled together via a system bus (not shown).
  • the processor 36 may include a single processor having one or more cores, or multiple processors having one or more cores.
  • the processor 36 may be configured with the I/O 40 to accept, receive, transduce and process verbal audio frequency command, given by the user. For example, an audio codec may be used.
  • the processor 36 may execute instructions of an operating system (OS) and various applications 90.
  • the processor 36 may control on command interactions among device components and communications over an I/O interface. Examples of the OS 90 may include, but not limited to, Linux AndroidTM, Android Wear, and Tizen OS.
  • the memory 38 may comprise one or more memories comprising different memory types, including RAM (e.g., DRAM and SRAM) ROM, cache, virtual memory microdrive, hard disks, microSD cards, and flash memory, for example.
  • the I/O 40 may comprise a collection of components that input information and output information. Example components comprising the I/O 40 having the ability to accept inputted, outputted or other processed data include a microphone, messaging, camera and speaker. I/O 40 may also include an audio chip (not shown), a display controller (not shown), and a touchscreen controller (not shown).
  • the memory 38 is external to the processor 36. In other embodiments, the memory 38 can be an internal memory embedded in the processor 36.
  • the communication interface 42 may include components for supporting oneway or two-way wireless communications and may include a wireless network interface controller (or similar component) for wireless communication over a network in some implementations, a wired interface in other implementations, or multiple interfaces.
  • the communication interface 42 is for primarily receiving data remotely, including streaming data, which is displayed and updated on the display 26.
  • the communication interface 42 could also support voice transmission.
  • the communication interface 42 supports low and intermediate power radio frequency (RF) communications.
  • example types of wireless communication may include Bluetooth Low Energy (BLE), WLAN (wireless local area network), WiMAX, passive radio-frequency identification (RFID), network adapters and modems.
  • example types of wireless communication may include a WAN (Wide Area Network) interface, Wi-Fi, WPAN, multi-hop networks, or a cellular network such as 3G, 4G, 5G or LTE (Long Term Evolution).
  • Other wireless options may include ultra-wide band (UWB) and infrared, for example.
  • the communication interface 42 may also include other types of communications devices (not shown) besides wireless, such as serial communications via contacts and/or USB communications. For example, a micro USB-type USB, flash drive, or other wired connection may be used with the communication interface 42.
  • the display 26 may be integrated with the base computing unit 20; while in another embodiment, the display 26 may be external from the base computing unit 20.
  • Display 26 may be flat or curved, e.g., curved to the approximate curvature of the body part on which the wearable sensor platform 10 is located (e.g., a wrist, an ankle, a head, etc.).
  • Display 26 may be a touch screen or gesture controlled.
  • the display 26 may be an OLED (Organic Light Emitting Diode) display, TFT LCD (Thin-Film-Transistor Liquid Crystal Display), or other appropriate display technology.
  • the display 26 may be active-matrix.
  • An example of the display 26 may be an AMOLED display or SLCD.
  • the display may be 3D or flexible.
  • the sensors 44 may include any type of microelectromechanical systems (MEMs) sensor. Such sensors may include an accelerometer/gyroscope 46 and a thermometer 48, for instance.
  • MEMs microelectromechanical systems
  • the power management unit 88 may be coupled to the power source 22 and may comprise a microcontroller that communicates and/or controls power functions of at least the base computing unit 20. Power management unit 88 communicates with the processor 36 and coordinates power management. In some embodiments, the power management unit 88 determines if a power level falls below a certain threshold level. In other embodiments, the power management unit 88 determines if an amount of time has elapsed for secondary charging.
  • the power source 22 may be a permanent or removable battery, fuel cell or photo voltage cell, etc.
  • the battery 22 may be disposable.
  • the power source 22 may comprise a rechargeable, lithium ion battery or the like may be used, for example.
  • the power management unit 88 may include a voltage controller and a charging controller for recharging the battery 22.
  • one or more solar cells may be used as a power source 22.
  • the power source 22 may also be powered or charged by AC/DC power supply.
  • the power source 22 may charge by non-contact or contact charging.
  • the power management unit 88 may also communicate and/or control the supply of battery power to the sensor module 16 via power interface 52.
  • the battery 22 is embedded in the base computing unit 20. In other embodiments, the battery 22 is external to the base computing unit 20.
  • the wearable sensor system 10 can be worn on the upper arm, waist, finger, ankle, neck chest or foot for example. That is, the wearable sensor platform 10 can be implemented as a leg or arm band, a chest band, a wristwatch, a head band, an article of clothing worn by the user such as a snug fitting shirt, or any other physical device or collection of devices worn by the user that is sufficient to ensure that the sensor units 28 are in contact with approximate positions on the user's skin to obtain accurate and reliable data.
  • FIG. 5 is a diagram of a cross section of a wrist 14. More specifically, by way of example, FIG. 6 is a diagram illustrating an implementation of the wearable sensor platform 10. The top portion of FIG. 6 illustrates the wearable sensor platform 10 wrapped around a cross-section of a user's wrist 14, while the bottom portion of FIG. 6 shows the band 12 in an flattened position.
  • the wearable sensor platform 10 includes at least an optical sensor array 54, and may also include optional sensors, such as a galvanic skin response (GSR) sensor array 56, a bioimpedance (BioZ) sensor array 58, and an electrocardiogram (ECG) sensor 60, or any combination of which may comprise a sensor array.
  • GSR galvanic skin response
  • BioZ bioimpedance
  • ECG electrocardiogram
  • the sensor units 28 configured as a sensor array(s) comprising an array of discrete sensors that are arranged or laid out on the band 12, such that when the band 12 is worn on a body part, each sensor array may straddle or otherwise address a particular blood vessel (i.e., a vein, artery, or capillary), or an area with higher electrical response irrespective of the blood vessel.
  • the sensor array may be laid out substantially perpendicular to a longitudinal axis of the blood vessel (e.g., radial artery 14R and/or ulnar artery 14U) and overlaps a width of the blood vessel to obtain an optimum signal.
  • the band 12 may be worn so that the sensor units 28 comprising the sensor array(s) contact the user's skin, but not so tightly that the band 12 is prevented from any movement over the body part, such as the user's wrist 14, or creates discomfort for the user at sensor contact points.
  • the sensor units 28 may comprise an optical sensor array 54 that may comprise a photoplethysmograph (PPG) sensor array that may measures relative blood flow, pulse and/or blood oxygen level.
  • the optical sensor array 54 may be arranged on sensor module 16 so that the optical sensor array 54 is positioned in sufficient proximity to an artery, such as the radial or ulnar artery, to take adequate measurements with sufficient accuracy and reliability.
  • the optical sensor array 54 may include an array of discrete optical sensors 55, where each discrete optical sensor 55 is a combination of at least one photodetector 62 and at least two matching light sources 64 located adjacent to the photodetector 62.
  • each of the discrete optical sensors 55 may be separated from its neighbor on the band 12 by a predetermined distance of approximately .5 to 2 mm.
  • the light sources 64 may each comprise a light emitting diode (LED), where LEDs in each of the discrete optical sensors 55 emit light of a different wavelength.
  • Example light colors emitted by the LEDs may include green, red, near infrared, and infrared wavelengths.
  • Each of the photodetectors 62 convert received light energy into an electrical signal.
  • the signals may comprise reflective photoplethysmograph signals.
  • the signals may comprise transmittance photoplethysmograph signals.
  • the photodetectors 62 may comprise phototransistors.
  • the photodetectors 62 may comprise charge-coupled devices (CCD).
  • FIG. 7 is a block diagram illustrating another configuration for components of wearable sensor module in a further implementation.
  • the ECG 60, the bioimpedance sensor array 58, the GSR array 56, the thermometer 48, and the optical sensor array 54 may be coupled to an optical-electric unit 66 that controls and receives data from the sensors on the band 12.
  • the optical- electric unit 66 may be part of the band 12.
  • the optical- electric unit 66 may be separate from the band 12.
  • the optical-electric unit 66 may comprise an ECG and bioimpedance (BIOZ) analog front end (AFE) 76, 78, a GSR AFE 70, an optical sensor AFE 72, a processor 36, an analog-to-digital converter (ADC) 74, a memory 38, an accelerometer/gyroscope 46, a pressure sensor 80 and a power source 22.
  • AFE 68 may comprise an analog signal conditioning circuitry interface between corresponding sensors and the ADC 74 or the processor 36.
  • the ECG and BIOZ AFE 76, 78 exchange signals with the ECG 60 and the bioimpedance sensor array 58.
  • the GSR AFE 70 may exchange signals with the GSR array 56 and the optical sensor AFE 72 may exchange signals with the optical sensor array 54.
  • the GSR AFE 70, the optical sensor AFE 72, the accelerometer/gyroscope 46, and the pressure sensor 80 may be coupled to the ADC 74 via bus 86.
  • the ADC 74 may convert a physical quantity, such as voltage, to a digital number representing amplitude.
  • the ECG and BIOZ AFE 76, 78, memory 38, the processor 36 and the ADC 74 may comprise components of a microcontroller 82.
  • the GSR AFE 70 and the optical sensor AFE 72 may also be part of the microcontroller 82.
  • the processor 36 in one embodiment may comprise a reduced instruction set computer (RISC), such as a Cortex 32-bit RISC ARM processor core by ARM Holdings, for example.
  • RISC reduced instruction set computer
  • the memory 38 is an internal memory embedded in the microcontroller 82. In other embodiments, the memory 38 can be external to the microcontroller 82.
  • the processor 36 may execute a calibration and data acquisition component 84 that may perform sensor calibration and data acquisition functions.
  • the sensor calibration function may comprise a process for self-aligning one more sensor arrays to a blood vessel.
  • the sensor calibration may be performed at startup, prior to receiving data from the sensors, or at periodic intervals during operation.
  • the sensor units 28 may also comprise a galvanic skin response (GSR) sensor array 56, which may comprise four or more GSR sensors that may measure electrical conductance of the skin that varies with moisture level. Conventionally, two GSR sensors are necessary to measure resistance along the skin surface.
  • the GSR sensor array 56 is shown including four GSR sensors, where any two of the four may be selected for use.
  • the GSR sensors 56 may be spaced on the band 2 to 5 mm apart.
  • the sensor units 28 may also comprise bioimpedance (BioZ) sensor array 58, which may comprise four or more BioZ sensors 59 that measure bioelectrical impedance or opposition to a flow of electric current through the tissue.
  • BioZ bioimpedance
  • a bioimpedance sensor array 58 may be provided that includes at least four to six bioimpedance sensors 59, where any four of electrodes may be selected for ⁇ " current pair and the "V" voltage pair. The selection could be made using a multiplexor.
  • the bioimpedance sensor array 58 is shown straddling an artery, such as the Radial or Ulnar artery.
  • the BioZ sensors 59 may be spaced on the band 5 to 13 mm apart.
  • one or more electrodes comprising the BioZ sensors 59 may be multiplexed with one or more of the GSR sensors 56.
  • the band 12 may include one or more electrocardiogram (ECG) sensors 60 that measure electrical activity of the user's heart over a period of time.
  • ECG electrocardiogram
  • the band 12 may also comprise a thermometer 48 for measuring temperature or a temperature gradient.
  • a series of sensors supported by flexible bridge structures may be serially connected edge-to-edge along a band.
  • Such a band with bridge supported sensors may be worn, for example, about the wrist 14.
  • the varying topology of the wrist 14 may cause force(s) to simultaneously be exerted upon the bridges due to compliance of the band to the varying topology of the wrist 14.
  • feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.
  • feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.
  • Gravity is a force. It generally describes how objects interact relative to one another. For example, the gravitational force that the Earth exerts on a person ensures the person remains on the ground. Earth's gravitational force is sometimes referred to as Earth's g-force.
  • Micro-gravity or hypo-gravity generally refers to a condition where the gravitational force is smaller than that of Earth g-force.
  • the gravitational force exerted by the moon is only a fraction of the gravitational force exerted by the Earth's g-force.
  • super- gravity or hyper-gravity refers to a condition where the gravitational force is larger than that of the Earth's g-force.
  • a person subject to g-forces in a spaceship on takeoff may be subject to super-gravity.
  • Biological processes are affected by variations in gravitational force. Variations in this force can have an impact on an organism's health and function.
  • the human heart has evolved to pump blood against gravity to the head and upper torso and accept the benefits that Earth's gravity provides in returning the blood to the heart and lungs or pumping blood to the lower extremities.
  • the heart's normal pumping function leads to a phenomena called "puffy face syndrome," where the veins of the neck and face appear expanded, the eyes become swollen and red, and the legs grow thinner because the heart does not have the benefit of Earth's gravity and has to pump harder to get blood to the lower extremities and has less help from leg muscles.
  • the sensors are configured to account for and operate in differing gravitational conditions.
  • the accelerometer/gyroscope 46 may be configured to measure a gravitational force, for example, micro-gravity, experienced by the wearable sensor platform 10.
  • the gravitational force measurement or data indicative of the measurement will be fed to one or more of the processor 36, the galvanic skin response (GSR) sensor array 56, the bioimpedance (BioZ) sensor array 58, the electrocardiogram (ECG) sensor 60, and/or the sensor units 28.
  • GSR galvanic skin response
  • BioZ bioimpedance
  • ECG electrocardiogram
  • the processor 36, the galvanic skin response (GSR) sensor array 56, the bioimpedance (BioZ) sensor array 58, the electrocardiogram (ECG) sensor 60, and/or the sensor units 28 may then be calibrated based on the gravitational force data and/or the measurement. Similarly, based on the gravitational force measurement or data indicative of the measurement, the processor 36 may also be configured to determine a time differential and a light speed differential, and send one or more such differentials to one or more of the galvanic skin response (GSR) sensor array 56, the bioimpedance (BioZ) sensor array 58, the electrocardiogram (ECG) sensor 60, and/or the sensor units 28 for further calibration due to time and light measurement differences.
  • GSR galvanic skin response
  • BioZ bioimpedance
  • ECG electrocardiogram
  • the systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a client computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components.
  • the components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN”), a wide area network (“WAN”), and the Internet.
  • LAN local area network
  • WAN wide area network
  • the Internet the global information network
  • the computing system can include clients and servers.
  • a client and server are generally remote from each other and typically interact through a communication network.
  • the relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
  • Various cloud-based platforms and/or other database platforms may be employed in certain implementations of the modular sensor platform 10 to, for example, receive and send data to the modular sensor platform 10.
  • One such implementation is architecture for multi-modal interactions (not shown).
  • Such architecture can be employed as a layer of artificial intelligence between wearable devices, like modular sensor platform 10, and the larger cloud of other devices, websites, online services, and apps.
  • Such an architecture also may serve to translate (for example by monitoring and comparing) data from the modular sensor platform 10 with archived data, which may be then be used to alert, for example, the user or healthcare professional about changes in condition.
  • This architecture further may facilitate interaction between the modular sensor platform 10 and other information, such as social media, sports, music, movies, email, text messages, hospitals, prescriptions to name a few.
  • FIGS. 8-12 illustrate several implementations of a wearable sensor platform 10 showing a sensor module 16 mounted on a band 12.
  • the wearable sensor platforms or systems 800, 900, 1000, 1 100 and 1200 are analogous to the wearable sensor platforms 10 and thus include analogous components having similar labels.
  • Each of the implementations illustrated may incorporate a removable power source 22, and may include a wireless (or wired) communication capability between the sensor module 16 and the base module 18 or between the sensor module 16 and remote device or system (not shown).
  • a wireless (or wired) communication capability between the sensor module 16 and the base module 18 or between the sensor module 16 and remote device or system (not shown).
  • FIGS. 8-12 may be employed in the implementations shown in FIGs. 1 -3 depending on the desired use.
  • FIGS. 8-12 illustrate various embodiments that employ configurations that position the sensor module 16 relative to the display 26, such that, as the anthropometric size of the body part increases (or decreases), the sensor module 16 is maintained in its optimal or near optimal position for suitable physiological measurements and user comfort over the period of use, while the display 26 maintains its position in relation to the body part over a large range of anthropometric sizes.
  • sensor module 16 maintains an optimal or near optimal position and pressure on the soft, underside of the wrist, while the display 26 maintains a user expected position on the topside of the wrist, regardless range of wrist sizes.
  • the sensor module 816 is selectively removable, and further includes a sensor module 816 attached to the band 812, and sensor units (not shown fully) attached to the sensor plate 830.
  • the sensor module 816 also includes a processor or a sensor computing unit 832 (not shown) that is similar to the sensor computing unit 32 of FIGS. 1 -3.
  • the wearable sensor platform or system 800 is illustrated as including an optional smart device or base module 818, a strap or a band 812, a base computing unit 820, a display/GUI 826, and a sensor module 816 attached to the band 812. In some other embodiments, the wearable sensor platform 800 does not include the optional base module 818. In some embodiments, the base module 818 includes an interface (not shown) similar to the communication interface. In some embodiments, the modular wearable sensor platform or system 800 is a smart watch or a smart phone.
  • the band 812 may be configured to comfortably fit a range of different body parts with varying sizes (e.g., a head, a chest, a wrist, an ankle, a ring) for each unique user.
  • the band 812 may be symmetrically adjustable over a wide range of sizes for band 812 lengths ranging from about 135mm for a small wrist to about 210mm for a large wrist, and at the same time maintaining sufficient sensor unit 828 contact with the body part for reliable measurements and user comfort over the period of use (e.g., continuous, short or long- term).
  • Such a band 812 may also include a plurality of sub-bands (not shown) that allows for similar symmetric adjustability around the body part and may also allow for more circulation of air in and around the wrist, thereby providing additional comfort. These sub-bands may be positioned in layers horizontally or vertically. Band 812 may also be of varying elasticity. For example, band 812 may have a less elastic region in or near the base module 818 and/or near the sensor module 816 and a more elastic region in the remaining portions of band 812. Other material properties for band 812 are contemplated and should be appreciated by the artisan.
  • the band 812 generally consists of chemically inert material, medical-grade material, hypoallergenic silicone, rubber, Graphene, and the like.
  • the band 812 may comprise a material selected from the group consisting of: elastomeric material, non-metallic material, non-magnetic metal, molded plastic, impact-resistant plastic, flexible plastic, plastic, rubber, wood, fabric, cloth, elastomeric material, or combinations of any of the preceding.
  • the band 812 could be also made of a skin graft, artificial skin or other like fabric to provide a continuous skin-like feel and comfort.
  • the band 812 may employ textile-based wearable form factors (e.g.
  • a fabric band 812 may further provide added breathability and minimize risks of infection in a system for wearing continuously (24/7 use) in either short-term or longer- term applications. Additionally, the band 812 has a textured interior surface to minimize slipping. Band 812 may also include overlapping or intertwining straps with similar symmetric adjustability.
  • both the sensor module 816 and, if employed, the removable power interface 822 are contoured to conform to a body part, here, a wrist of a user.
  • the sensor module 816 may be in contact with the skin of the wrist.
  • the sensor module 816 is a flexible plate.
  • the sensor units 828 can be arranged, for example, to be spring loaded or co-molded in a flexible gel, to allow the sensor units 828 to contact the body part without adjusting the band to improve comfort and/or measurement reliability and accuracy.
  • the sensor module 816 may be worn with one type of band 812 during the day and inserted into and worn with a different type of band 812 during sleep.
  • the system 900 of FIG 9. is analogous to the wearable sensor platforms 10 and system 800 of FIG. 8.
  • system 900 includes analogous components having similar labels.
  • band 912 in this implementation is similar to band 812.
  • Band 912 employs a sensor module 816 (not fully shown) that is co-molded or integral to the band 912.
  • the sensor module 816 can may further have the sensor units 828 arranged in a flexible gel or similar fluid.
  • band 1012 is similar to band 812 and 912.
  • Band 1012 is configured in this implementation as an overstrap arrangement so as to overlap sensor module 1016.
  • Other strap attaching arrangement are contemplated.
  • Band 1012 may be releasably attached to the sensor module 1030, and may be adjustable to accommodate different size of the body parts, while retaining appropriate positioning of the sensor module 1016 relative to the base module 1018.
  • the adjustability of sensor module 1016 can be accomplished through a variety of attachment mechanisms, for example, magnets, ratcheting, grooves, snaps and other ways to hold the sensor module 1016 in position that should be apparent to the artisan.
  • the system 1 100 of FIG 1 1 is analogous to the wearable sensor platforms 10 and systems 800 of FIG. 8, 900 of FIG 9 and 1000 of FIG 10.
  • system 1 100 includes analogous components having similar labels.
  • band 1 1 12 is configured in this implementation in a segmented or modular link arrangement.
  • the links of band 1 1 12 are connected by a flex connection 1 192.
  • the flex connection 1 192 can take a variety of forms.
  • the flex connection 1 192 may be a distinct elastic unit attached to the links of band 1 1 12.
  • Such an elastic unit 1 192 allows the sensor module 1 1 16 to be positioned relative to the display 1 126, such that, as the size of the body part increases (or decreases), the sensor module 1 1 16 is maintained in its optimal or near optimal position for suitable physiological measurements and user comfort over the period of use, while the display 1 126 maintains its position in relation to the body part over a large range of anthropometric sizes.
  • each flex connection 1 192 slides into and out of each link of the band 1 1 12.
  • the flex connections 1 190 may be integral to the links of the band 1 1 12, where the links of the band 1 1 12, in turn, could be connected by various mechanisms to connect such links, e.g. watch links.
  • links sizing of the system 1 100 about a body part can be further refined by removal or addition of links by a user, for example.
  • implementations including a wireless communication between the sensor module 1 1 16 and the base module 1 1 18 no wiring is needed between the modules, or power-only wiring between the sensor module 1 1 16 and the base module 1 1 18 may be employed.
  • wiring arrangements for power and data communication may be employed between the sensor module 1 1 16 and the base module 1 1 18.
  • the system 1200 of FIG 12 is analogous to the wearable sensor platforms 10 and systems 800 of FIG. 8, 900 of FIG. 9 and 1000 of FIG. 10 and 1 100 of FIG. 1 1 .
  • system 1200 includes analogous components having similar labels.
  • the base module 1218 and sensor module 1216 are self-adhering to the body part.
  • a partial band 1212 as shown in FIG. 12 may employed with either the base module 1218 or the sensor module 1216 to further increase the surface area for improved adhesion to the body part. In other implementations, band 1212 is not employed.
  • the display 1226 may be oriented toward or away from the sensor module 1216.
  • a sensor module 1216 may be applied to the forehead of the user and the display may be oriented toward the user, for example, in the form of glasses for eyewear (not shown) or a helmet face shield (not shown).
  • the sensor module 1216 may be configured as a skin-like tattoo that would adhere the sensor module 1216 to the skin of the forehead (or other body part), while the display 1226 may be a thin, flexible screen applied to the skin of the wrist (or other body part), where both may include a power source.
  • FIGS. 13 and 14 illustrate an embodiment using the implementation of FIG 1 , and both FIGS. 13 and 14 include analogous components having similar labels.
  • the implementation of FIG. 13 and 14 may be employed in other implementations of the wearable sensor platform 10. This implementation may be employed with or without the ECG clasp 1334.
  • the sensor module 1316 is arranged to be microadjustable.
  • the micro-adjustable sensor module 1316 of this implementation is positioned in a track in the band 1312.
  • the band 1312 is adjustable, manually or automatically, along the track of the band 1312 via a sensor module flex lead 1394.
  • the sensor module flex lead 1394 is shown as an accordion-like lead that allows adjustment along the track.
  • FIG 13 illustrates the sensor module 1316 in a first position
  • FIG 14 illustrates sensor module 1416 in a second position relative to the first position in FIG. 13.
  • Various other positions of the sensor module 1316 are possible within the track to accommodate the positioning of the sensor module for a given user.
  • micro- adjustable sensor module 1316 may be rotatable, manually or automatically, in the same or opposite rotational directions and the sensor units 1528 may be in sync or out of sync relative to each other depending on the application. Rotation of the sensor units 1528 may occur either individually, in combination with other sensor units 1528 or the sensor module 1516 may be moved along the track of the band 1512, as illustrated in FIG 16, and the sensor units 1628 rotated. Such rotation may facilitate refined positioning of the sensor units 1628 for improved comfort or improved physiological measurements depending on the body part.
  • FIGS. 17 and 18 illustrate an embodiment using the implementation of FIG 1 , and both FIGS. 17 and 18 include analogous components having similar labels.
  • the implementation of FIG. 17 and 18 may be employed in other implementations of the wearable sensor platform 10.
  • the micro-adjustable sensor module 1716 is arranged on a sensor slide positioned in or on track of band 1712.
  • the sensor module 16 (not shown) is positioned adjustably in or on the band 1712 via a sensor slide 1796.
  • the sensor slide 1796 is adjusted, manually or automatically, to refine the position the sensor module 16 (not shown) as desired.
  • FIG. 17 illustrates the sensor slide 1796 in a first position
  • FIG 18 illustrates sensor slide 1796 in second position relative to the first position in FIG. 17.
  • Various other positions of the sensor slide 1796 are possible within the track to accommodate the positioning of the sensor module for a given user as desired.
  • one or more of the sensor units 1328 may be rotatable. Rotation of the sensor units 1328 may occur either individually, in combination with other sensor units 1328 or as the sensor module is moved along the track of the band 1312 in FIG 13. Such rotation may facilitate refined positioning of the sensor units 1328 for improved comfort or improved physiological measurements depending on the body part.
  • the various implementations for sensor module 16 may be employed alone or together depending on the user and application.
  • the present invention has been described in accordance with the embodiments shown, and there could be variations to the embodiments, and any variations would be within the spirit and scope of the present invention.
  • the exemplary embodiment can be implemented using hardware, software, a computer readable medium containing program instructions, or a combination thereof.
  • Software written according to the present invention is to be either stored in some form of computer-readable medium such as a memory, a hard disk, or a CD/DVD-ROM and is to be executed by a processor.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Veterinary Medicine (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

La présente invention concerne un système à porter sur soi et des procédés de mesure de données physiologiques provenant d'un dispositif porté autour d'une partie du corps d'un utilisateur et comprenant un module de base, un premier module capteur et un second module capteur. Le module de base comporte un affichage et une unité de calcul de base. Le premier module capteur mesure une force gravitationnelle expérimentée par le dispositif. Le second module capteur est disposé spatialement par rapport au module de base et sur une partie de la partie du corps afin de mesurer une ou plusieurs caractéristiques physiologiques étalonnées en fonction de la force gravitationnelle mesurée avec le premier module capteur. Le module de base est positionné de manière réglable par l'utilisateur par rapport au second module capteur de telle sorte que le module capteur conserve son positionnement sur la partie du corps pour un contact suffisant avec la partie du corps afin d'obtenir des mesures précises des données physiologiques, en dépit de la taille anthropométrique de la partie du corps.
PCT/IB2015/001997 2014-10-08 2015-10-08 Système réglable à porter sur soi pourvu d'une plate-forme à capteurs modulaire WO2016055853A1 (fr)

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US201462061290P 2014-10-08 2014-10-08
US62/061,290 2014-10-08
US14/719,043 US9592007B2 (en) 2014-05-23 2015-05-21 Adjustable wearable system having a modular sensor platform
US14/719,043 2015-05-21

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EP3493021A1 (fr) * 2017-11-30 2019-06-05 Vestel Elektronik Sanayi ve Ticaret A.S. Dispositif électronique portable et son procédé de commande
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