Oximeters Patents (Class 356/41)
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Patent number: 10953156Abstract: The present disclosure describes embodiments of a patient monitoring system and methods that include the measure and display of hemoglobin statistics. In an embodiment, total hemoglobin trending is displayed over a period of time. Statistics can include frequency domain analysis, which may be unique for each patient monitored. The total hemoglobin trending and/or statistics can further be used to help control the treatment of a patient, such as being used to control IV administration.Type: GrantFiled: September 16, 2019Date of Patent: March 23, 2021Assignee: Masimo CorporationInventors: Ammar Al-Ali, Massi Joe E. Kiani, Michael O'Reilly
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Patent number: 10942166Abstract: An oximeter sensor system includes a light source group having a plurality of LEDs including at least a first visible light LED, a second visible light LED and an infrared LED adjacent the first visible light LED and the second visible light LED, an infrared filter disposed in front of only the first visible light LED and the second visible light LED, a light source housing having a base, one or more sidewalls and a light-emitting end where the light source housing has a frustum shape where the light source group is disposed adjacent the base and facing the light-emitting end and where the one or more sidewalls has a reflective coating thereon, a light detector disposed opposite to, spaced from and facing the light-emitting end of the light source housing, and a cuvette disposed between the light-emitting end of the light source housing and the light detector.Type: GrantFiled: May 11, 2016Date of Patent: March 9, 2021Assignee: Nova Biomedical CorporationInventor: Michael Cafferty
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Patent number: 10932701Abstract: The present invention is directed to a bio-fluid detector such as a hemoglobin detector having the capability of receiving, storing and transmitting health information utilizing a portable transmitter and receiver including electronic PDAs such as cell phones. Further, the present invention utilizes a non-invasive hemoglobin detector that is connected to a portable transmitter-receiver such as PDAs including, but not limited to, cell phones.Type: GrantFiled: March 28, 2013Date of Patent: March 2, 2021Assignee: The Johns Hopkins UniversityInventors: Soumyadipta Acharya, William Chen, Phillip J. Oh, Judy C. Doong, Noah Lampel Greenbaum, Guilherme Barros, George Major Chen, David Yin
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Patent number: 10918289Abstract: Disclosed herein is a ring-shaped wearable device for detecting biometrics with a light source and a photodetector directed towards a digit wearing the ring-shaped device. The ring can thus detect oxygen saturation of a wearer based on light transmitted through the wearer's finger. The ring can include power saving measures to extend the battery life. A motion sensor can help determine opportune moments for data collection such as when the wearer is still. The motion sensor can be used to remove noise from the data caused by motion. After data is collected or during data collection, the ring can wirelessly communicate the data to another portable electronic device such as a phone or watch.Type: GrantFiled: June 12, 2019Date of Patent: February 16, 2021Assignee: FITBIT, INC.Inventors: Jaclyn Leverett Wasson, Peter W. Richards, Lindsey Michelle Sunden, Corey Stephen O'Connor, Conor Joseph Heneghan, Xi Zhang, Hamed Vavadi, Chris Hanrahan Sarantos, Peter Colin Dess
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Patent number: 10881311Abstract: Apparatus for measuring sural nerve conduction velocity and amplitude, the apparatus including a housing; stimulation means for electrically stimulating a human sural nerve; a biosensor comprising a plurality of electrodes for detecting a sural nerve response evoked by the stimulation means; acquisition means electrically connected to the biosensor for electrically acquiring the sural nerve response detected by the biosensor; processing means electrically connected to the acquisition means for digitizing, processing and storing the acquired sural nerve response; calculation means electrically connected to the processing means for calculating the conduction velocity and amplitude of the processed sural nerve response; and display means for displaying the sural nerve conduction velocity and amplitude; wherein the stimulation means and the biosensor are designed to be placed on a patient's anatomy, in the vicinity of a sural nerve.Type: GrantFiled: November 3, 2015Date of Patent: January 5, 2021Assignee: NeuroMetrix, Inc.Inventors: Bonniejean Boettcher, Marc Cryan, Shai N. Gozani, Glenn Herb, Xuan Kong, Michael Williams, Charles Fendrock
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Patent number: 10874345Abstract: Approaches to determining a sleep fitness score for a user are provided, such as may be based upon monitored breathing disturbances of a user. The system receives user state data generated over a time period by a combination of sensors provided via a wearable tracker associated with the user. A system can use this information to calculate a sleep fitness score, breathing disturbance score, or other such value. The system can classify every minute within the time period as either normal or atypical, for example, and may provide such information for presentation to the user.Type: GrantFiled: May 31, 2019Date of Patent: December 29, 2020Assignee: Fitbit, Inc.Inventors: Suraj Gowda, Conor Joseph Heneghan, Shelten Gee Jao Yuen, Anjian Wu, Daniel Joel Freschl, Peter W. Richards, Chris H. Sarantos, Jonathan Wonwook Kim
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Patent number: 10871433Abstract: An optical device for the quantitative determination of the concentration of at least one analyte in a liquid sample comprises a housing (52) defining a first chamber (56) and a second chamber (60). A sample port (64) is defined in the first chamber (56). The sample port (64) receives light from a plurality of test regions of an assay device when the optical device is engaged with the assay device. The optical device further comprises a plurality of optical detectors (75, 76, 77) provided in the second chamber (60) and a mask member (66) interposed between the first chamber (56) and the second chamber (60) and having an aperture (68) defined therein and configured to direct light from the sample port (64) onto the optical detectors (75, 76, 77).Type: GrantFiled: May 24, 2017Date of Patent: December 22, 2020Assignee: MOLECULAR VISION LIMITEDInventors: Gihan Ryu, Gordon Jowett, Neeraj Adsul
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Patent number: 10856738Abstract: A device for measuring a physiological parameter of a user carrying the device that includes a sensor having at least two sensor elements for detecting a sensor signal, a carrier configured to carry the sensor, and electrical contacts of the sensor elements that lead on, into or through the carrier. One or more frames carried by the carrier are formed around the sensor and/or the individual sensor elements, and an insulator material is filled between the one or more frames and the sensor and/or the sensor elements surrounded by a respective frame without covering a top surface of a respective sensor element facing away from the carrier.Type: GrantFiled: December 11, 2013Date of Patent: December 8, 2020Assignee: Koninklijke Philips N.V.Inventors: Cristian Nicolae Presura, Pieter Geert Van Engen, Alphonsus Tarcisius Jozef Maria Schipper, Koen Geenen, Gerardus Franciscus Cornelis Maria Lijten
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Patent number: 10799128Abstract: An optical vital signs sensor configured to measure or determine vital signs of a user comprises a light source configured to generate a light beam having an angular range of angles of incidence. The light beam is directed towards the skin of the user. A photo detector is provided and is configured to detect light which is indicative of a reflection of the light beam from the light source in or from the skin of the user. The light source and the photo detector are arranged adjacent to each other and on the same side of the skin of the user. A light shaping unit is configured to shape the light beam of the light source before the light beam enters the skin by limiting the angular range of angle of incidence to less than 20°.Type: GrantFiled: March 31, 2017Date of Patent: October 13, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Elvira Johanna Maria Paulussen, Hugo Johan Cornelissen
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Patent number: 10732120Abstract: A method of evaluating characteristics of a work piece includes forming a photosensitive layer on the work piece. Then an ion implantation is performed on the work piece. The work piece is radiated, and an optical intensity of the photosensitive material on the work piece is calculated. The ion implantation pattern is evaluated according to the optical intensity. A chemical structure of the photosensitive material is changed upon the ion implantation. The work piece is recovered by reversing the chemical structure of the photosensitive material or removing the ion interrupted photosensitive material by chemicals.Type: GrantFiled: November 30, 2018Date of Patent: August 4, 2020Assignee: Taiwan Semiconductor Manufacturing Company LimitedInventors: Kuo-Sheng Chuang, You-Hua Chou
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Patent number: 10722156Abstract: A sleeve includes a body having a top opening. The body covers a handheld oximeter probe or a portion of the probe. The sleeve has a shape that approximately matches the oximeter probe or portion of the probe, which is covered by the sleeve. The sleeve has a top opening that allows a user to slide the oximeter probe into the sleeve. The sleeve is transparent to radiation emitted and collected by the oximeter probe. The sleeve is formed of a material that prevents patient tissue, fluid, viruses, bacteria, and fungus from contacting the covered portions of the oximeter probe. The sleeve leaves the probe relatively sterile after use so that little or no clearing of the probe is required for a subsequent use, such as when the probe is covered with a new, unused sleeve.Type: GrantFiled: April 20, 2017Date of Patent: July 28, 2020Assignee: ViOptix, Inc.Inventors: Mark Lonsinger, Scott Coleridge, Kate LeeAnn Bechtel, William Welch
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Patent number: 10720755Abstract: Embodiments of the invention relate to a method and apparatus for measuring at least one parameter that is (i) descriptive of stochastic motion of suspended particles within a fluid; and/or (ii) is a rheological property of the fluid or of the suspension; (iii) describes a concentration of suspended particles within the fluid; and/or (iv) is a diffusion coefficient of the suspended particles and/or (iv) is a viscosity of the fluid or of the suspension; and/or (v) is a food aging or spoilage parameter and/or (vii) is an in-vivo or in-vitro blood coagulation parameter.Type: GrantFiled: February 7, 2018Date of Patent: July 21, 2020Assignee: ELFI-TECH LTD.Inventors: Ilya Fine, Alexander Kaminsky
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Patent number: 10690684Abstract: A system for measuring the blood loss comprises a measuring device that determines the hemoglobin concentration of fluid within a container utilizing a light source and a light detector. The container receives blood and other fluids from a patient during a medical procedure. Light from the light source is passed through the blood and other fluids in the container and is detected by the light detector. Based upon a magnitude of light detected, the hemoglobin concentration of the fluid in the container can be determined. A volume-measuring device determines the volume of blood and fluid in the container. Knowing the hemoglobin concentration and volume of fluid in the container, the volume of patient blood loss in the container can be determined. The blood loss measuring device in combination with infusion systems maintains a real-blood volume status so that proper infusion of blood, crystalloid and/or colloid solutions occurs.Type: GrantFiled: October 11, 2018Date of Patent: June 23, 2020Assignees: Majelco Medical, Inc., University of Utah Research FoundationInventors: Annette Macintyre, Lara Brewer Cates, Suzanne Wendelken, Quinn Tate, Soeren Hoehne, Alfred Akerman, Stephen W. Allison, Matthew B. Scudiere, Michael R. Cates, David L. Beshears, Adan James Akerman
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Patent number: 10680141Abstract: A LED switching system, including a multi-chip LED including first and second sets of LED chips, the first set of LED chips associated with a first wavelength band and the second set of LED chips associated with a second wavelength band; a first LED driver in communication with the first set of LED chips; a second LED driver in communication with the second set of LED chips; a LED controller configured to: receive input indicating a selection of one of the wavelength bands; identifying one of the first set and the second set of LED chips associated with the selected wavelength band; and providing a signal to one of the first and the second LED drivers that is in communication with the identified set of LED chips; wherein, in response to the signal, the one of the first and the second LED drivers activates the identified set of LED chips.Type: GrantFiled: June 4, 2019Date of Patent: June 9, 2020Assignee: Dell Products L.P.Inventors: Kyung Eun Lee, Yong Gu Kang
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Patent number: 10664684Abstract: A fingerprint sensor device with built-in liveness detection capabilities includes: an area sensor disposed on a top surface of a substrate; a stiffener disposed below a bottom surface of the substrate; a printed circuit making electrical connection to the sensor disposed below the stiffener; and a light source and a photodetector. At least one of the light source and photodetector is disposed on the printed circuit below the area sensor. The stiffener includes at least one through-hole located with respect to the light source or photodetector to allow light from the light source to transmit through the stiffener towards a finger located on the area sensor or to allow light reflected from the finger to pass through the stiffener to the photodetector.Type: GrantFiled: June 2, 2017Date of Patent: May 26, 2020Assignee: NEXT Biometrics Group ASAInventors: Kolja Vogel, Robert Müller, Ond{hacek over (r)}ej Konopka, Radim {hacek over (S)}mat
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Patent number: 10659963Abstract: A medical device includes a printed circuit board-battery assembly, a tape encapsulation assembly wrapped around the PCB-battery assembly, and a second removable tab positioned on a surface of the tape encapsulation assembly. The second removable tab provides an adhesive layer on a surface of the medical device when the second removable tab is removed from the medical device. The PCB includes the electronic circuitry that performs the functionalities of the medical device, including an optical sensor that comprises at least one light source to emit light towards a measurement site of a user and at least one photodetector to receive light returned from the measurement site. The medical device can connect to a host computing device that performs various operations, including, but not limited to, authenticating the medical device, causing measurement values such as blood oxygen saturation (SpO2), pulse rate (PR), and a perfusion index (PI) to be provided.Type: GrantFiled: February 12, 2019Date of Patent: May 19, 2020Inventors: Marcelo Malini Lamego, Tatiana Buticosky Lamego
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Patent number: 10646144Abstract: Apparatus and methods provide wireless, disposable, continuous pulse oximeter sensor technology, useful and beneficial for a number of applications including relatively extended periods of data collection, and/or packaged in compact and easy-to-use assemblies. Economic fabrication and use provides flexible methodologies that can reduce the overall costs of monitoring and collecting patient's physiological data, and provide relatively greater ease and comfort to the patient. A disposable wireless continuous pulse oximeter sensor has a reduced emitter-detector separation, a low-power frontend, and a low-cost processor that sends waveforms to a host device so that the host can calculate and display the parameters of interest. Complications created by the reduced distance between emitter and detector are minimized by using an emitter-detector assembly with an optically dark background, and a bandage for improved optical compliance.Type: GrantFiled: December 7, 2016Date of Patent: May 12, 2020Inventors: Marcelo Malini Lamego, Tatiana Buticosky Lamego
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Patent number: 10595757Abstract: An apparatus for measuring a biological component includes: light sources configured to emit light that irradiates a target object; one or more detectors configured to receive light from the target object that is irradiated by the light emitted by the light sources and to detect light signals corresponding to the light received from the target object; and a processor configured to determine an optimal light source for measuring a biological component, from among the light sources, based on the light signals detected by the one or more detectors and to measure a biological component of the target object using the optimal light source.Type: GrantFiled: April 28, 2017Date of Patent: March 24, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joon Hyung Lee, Jung Yong Nam, Ki Young Chang, Kak Namkoong
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Patent number: 10588522Abstract: A biological sensor capable of improving the signal to noise ratio of a detection signal obtained by a light-receiving element and amplified by an amplifier is provided. The biological sensor includes a microcontroller that generates a driving signal, a light-emitting element that emits light in accordance with the driving signal, a light-receiving element that outputs a current detection signal based on an intensity of received light, and an amplifying circuit that converts the current detection signal into a voltage detection signal, amplifies an alternating current component of the voltage detection signal, and outputs an amplified detection signal. Furthermore, the microcontroller generates an offset signal that is applied to an offset circuit to offset the direct current component of the voltage detection signal and to obtain biological information by processing the amplified detection signal.Type: GrantFiled: February 2, 2016Date of Patent: March 17, 2020Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Hirofumi Tsuchimoto, Takanori Hayashi, Kengo Saito, Hiroyuki Nakaji
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Patent number: 10588555Abstract: A pulse oximeter (1, 2) includes a first light emitter (11) configured to generate first light, a second light emitter (12) configured to generate second light with a different wavelength from that of the first light, and a light receiver (13) configured to receive each of first return light of the first light from a living body and second return light of the second light from the living body. The pulse oximeter is provided with: a contact pressure detecting device (14) configured to detect a signal associated with contact pressure between the pulse oximeter and the living body; and an outputting device (100) configured to output information regarding oxygen saturation, on the basis of respective signals outputted from the light receiver due to the first return light and the second return light, and the detected signal associated with the contact pressure.Type: GrantFiled: May 20, 2014Date of Patent: March 17, 2020Assignee: PIONEER CORPORATIONInventor: Yutaka Matsui
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Patent number: 10558047Abstract: In some embodiments, a system comprises a head-mounted frame removably coupleable to the user's head; one or more light sources coupled to the head-mounted frame and configured to emit light with at least two different wavelengths toward a target object in an irradiation field of view of the light sources; one or more electromagnetic radiation detectors coupled to the head-mounted member and configured to receive light reflected after encountering the target object; and a controller operatively coupled to the one or more light sources and detectors and configured to determine and display an output indicating the identity or property of the target object as determined by the light properties measured by the detectors in relation to the light properties emitted by the light sources.Type: GrantFiled: September 22, 2017Date of Patent: February 11, 2020Assignee: Magic Leap, Inc.Inventors: Nicole Elizabeth Samec, Nastasja U. Robaina, Adrian Kaehler, Mark Baerenrodt, Eric Baerenrodt, Christopher M. Harrises, Tammy Sherri Powers
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Patent number: 10524728Abstract: Aspects relate to a portable device that may be used to identify a critical intensity and an anaerobic work capacity of an individual. The device may utilize muscle oxygen sensor data, speed data, or power data. The device may utilize data from multiple exercise sessions, or may utilize data from a single exercise session. The device may additionally estimate a critical intensity from a previous race time input from a user.Type: GrantFiled: May 27, 2016Date of Patent: January 7, 2020Assignee: NIKE, Inc.Inventors: Brett S. Kirby, Bradley W. Wilkins, David Clark, Eric Bradley, Elizabeth Besemer
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Patent number: 10512426Abstract: A storage unit stores a cumulative light emitting frequency or a cumulative light emitting time of a light emitting element. In a case where the cumulative light emitting frequency is greater than a predetermined light emitting frequency or the cumulative light emitting time is longer than a predetermined light emitting time, a control unit causes the light emitting element to emit light toward a living body by increasing the light emitting frequency or the light emitting time at which the light emitting element emits the light in order to acquire a light receiving result once, compared to a setting light emitting frequency or a setting light emitting time. A light receiving unit acquires information of the living body, based on a light receiving result obtained by receiving the light which is emitted toward the living body and transmitted through the living body.Type: GrantFiled: July 27, 2017Date of Patent: December 24, 2019Assignee: Seiko Epson CorporationInventor: Takashi Toya
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Patent number: 10492695Abstract: A living-body information measuring device includes a first light-emitting unit that emits a single-mode laser beam, a second light-emitting unit that emits a multi-mode light beam or an LED light beam, a light-receiving element that receives reflected or transmitted light beams reflected or transmitted by a living body when the first light-emitting unit and the second light-emitting unit emit the beams toward the living body, a control unit that controls light-emission periods of the first light-emitting unit and the second light-emitting unit, and a measurement unit that measures plural types of living-body information about the living body by using each of the reflected or transmitted light beams that are successively received by the light-receiving element.Type: GrantFiled: August 8, 2016Date of Patent: December 3, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Tomoaki Kojima, Kazuhiro Sakai, Hideaki Ozawa, Hideyuki Umekawa, Manabu Akamatsu
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Patent number: 10485463Abstract: A method and system for measuring oxygen levels and various blood constituents utilizing a sensor having one or more light sources, and one or more light detectors is disclosed. The system is capable of using data collected by the one or more detectors from a non-monochromatic light source to provide accurate information during motion events occurring with an extremity the sensor. The system is also capable of detecting and providing an alert if the sensor is not properly placed on a patient or becomes disengaged therefrom.Type: GrantFiled: October 10, 2014Date of Patent: November 26, 2019Assignee: Medtor LLCInventor: Thomas Dietiker
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Patent number: 10470695Abstract: A non-invasive, optical-based physiological monitoring system is disclosed. One embodiment includes an emitter configured to emit light. A diffuser is configured to receive and spread the emitted light, and to emit the spread light at a tissue measurement site. The system further includes a concentrator configured to receive the spread light after it has been attenuated by or reflected from the tissue measurement site. The concentrator is also configured to collect and concentrate the received light and to emit the concentrated light to a detector. The detector is configured to detect the concentrated light and to transmit a signal representative of the detected light. A processor is configured to receive the transmitted signal and to determine a physiological parameter, such as, for example, arterial oxygen saturation, in the tissue measurement site.Type: GrantFiled: December 19, 2018Date of Patent: November 12, 2019Assignee: MASIMO CORPORATIONInventor: Ammar Al-Ali
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Patent number: 10448870Abstract: The invention provides a pulse oximetry sensor for attachment to the lower half of the palm or the ulnar edge of the palm. The sensor may be portable, untethered and in some instances, disposable. The features of the sensor make it effective in stable, chronic or emergency medical settings.Type: GrantFiled: December 12, 2013Date of Patent: October 22, 2019Assignee: WristDocs LLCInventors: Mark Vastola, Jacob Conner, Kevin Whitworth, Ryan Woolsey
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Patent number: 10420491Abstract: Optical-electronic device configured to generate a calibration factor for use in determining optical density. The device includes at least one emitter configured to emit light, a detector configured to receive light and transmit data representative of the received light and a processor coupled to the at least one emitter and the detector. The device further includes a non-transitory storage medium coupled to the processor and configured to store instruction to cause the device to perform the calibration method. Additionally, a calibration container includes a main body, upper lid, and a lower lid. The main body is configured to receive the device and an object having known optical properties.Type: GrantFiled: May 26, 2016Date of Patent: September 24, 2019Assignee: LVL Technologies, Inc.Inventors: Nithin O. Rajan, Dustin M. Freckleton, Paulo E. Xavier da Silveira, Byron Olson
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Patent number: 10403919Abstract: An iron redox flow battery system, comprising a redox electrode, a plating electrolyte tank, a plating electrode, a redox electrolyte tank with additional acid additives that may be introduced into the electrolytes in response to electrolyte pH. The acid additives may act to suppress undesired chemical reactions that create losses within the battery and may be added in response to sensor indications of these reactions.Type: GrantFiled: September 21, 2017Date of Patent: September 3, 2019Assignee: ESS Tech, Inc.Inventors: Craig E. Evans, Yang Song
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Patent number: 10390717Abstract: A method and apparatus of compensating for a differential error between a plurality of body surface sensors, where each sensor respectively comprises a transmitter and a receiver.Type: GrantFiled: November 30, 2016Date of Patent: August 27, 2019Assignee: Huntleigh Technology LimitedInventors: Stephen John Cook, Francis Gregory Baily, Philip Morris, Nigel A J Gough
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Patent number: 10376223Abstract: Provided is a living-body information measurement device including a first light emitting element and a second light emitting element each that emits different light in wavelength, a light receiving element that receives the light emitted from the first light emitting element and the second light emitting element, a control unit that controls an emission period of each of the first light emitting element and the second light emitting element so that the number of times of emission of the second light emitting element per unit time is less than the number of times of emission of the first light emitting element per unit time, and a measuring unit that measures plural living-body information based on the light received in the light receiving element.Type: GrantFiled: August 2, 2016Date of Patent: August 13, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Hideyuki Umekawa, Kazuhiro Sakai, Manabu Akamatsu, Tomoaki Kojima
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Patent number: 10368749Abstract: Devices and systems have a sensor probe configured to measure tissue oxygen saturation in the intestine or mesentery. The devices and systems can determine the oxygenation state of the entire thickness of the intestine or mesentery. Embodiments of the invention also include methods for inducing a temporary ischemic period in an intestine or mesentery tissue and analyzing changes in oxygen saturation of the tissue during the temporary ischemic period or during a recovery phase. The devices, systems, and methods can be applied in diagnosing intestinal ischemia in a patient, as well as in monitoring tissue oxygen saturation of the intestine or mesentery during or after a surgical procedure.Type: GrantFiled: August 22, 2017Date of Patent: August 6, 2019Assignee: ViOptix, Inc.Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao
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Patent number: 10335070Abstract: Devices and systems have a sensor probe configured to measure tissue oxygen saturation in the intestine or mesentery. The devices and systems can determine the oxygenation state of the entire thickness of the intestine or mesentery. Embodiments of the invention also include methods for inducing a temporary ischemic period in an intestine or mesentery tissue and analyzing changes in oxygen saturation of the tissue during the temporary ischemic period or during a recovery phase. The devices, systems, and methods can be applied in diagnosing intestinal ischemia in a patient, as well as in monitoring tissue oxygen saturation of the intestine or mesentery during or after a surgical procedure.Type: GrantFiled: July 29, 2016Date of Patent: July 2, 2019Assignee: ViOptix, Inc.Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao
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Patent number: 10327652Abstract: A method of assembling an opto-physiological (OP) sensor comprises: (i) modelling the opto-physiological properties of at least one body tissue type to be monitored; (ii) determining, through application of the model, an optimal optical design for an opto-physiological (OP) sensor operable to monitor the opto-physiological properties of the at least one body tissue type; and (iii) making the OP sensor to the determined optical design. The optimal optical design for the OP sensor comprises: (i) determining the optimum separation of each of a plurality of light sources from a photodetector, based on modelled optical path lengths for light travelling from each light source, through the body tissue type to be monitored, to the photodetector; and (ii) locating light sources of different wavelengths at different distances from the photodetector.Type: GrantFiled: October 15, 2014Date of Patent: June 25, 2019Assignee: Loughborough UniversityInventors: Sijung Hu, Vicente Azorin-Peris
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Patent number: 10321862Abstract: A near infrared spectrophotometric sensor assembly for non-invasive monitoring of blood oxygenation levels in a subject's body is provided. The assembly includes at least one light source, at least one light detector operable to detect light emitted by the light source, an electromagnetic interference shielding disposed around at least a portion of the light detector, wherein the electromagnetic interference shielding includes an electrically conductive substrate that is optically transparent, and one or both of a light blocking sheet disposed relative to at least one of the light detectors and an encapsulating material.Type: GrantFiled: February 13, 2012Date of Patent: June 18, 2019Assignee: CAS Medical Systems, Inc.Inventors: Matthew Dalene, Karen Duffy
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Patent number: 10314526Abstract: A biosensor including light emitting elements and a light receiving element disposed on a principal surface of a wiring board; a light shielding portion disposed between a light-emitting-element sealing portion and a light-receiving-element sealing portion; a base medium having light transmitting properties, disposed in parallel with the wiring board with the light shielding portion therebetween; an adhesion layer having light transmitting properties that bonds the base medium with the light-emitting-element sealing portion, the light-receiving-element sealing portion, and the light shielding portion; and a first electrocardiograph electrode attached to a principal surface of the base medium. Both end portions of the adhesion layer and both end portions of the base medium are disposed such that they overlap neither of the light-receiving-element sealing portion nor the light-emitting-element sealing portion when viewed from a direction normal to the principal surface of the wiring board.Type: GrantFiled: February 1, 2017Date of Patent: June 11, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Toru Shimuta, Yasutaka Fujii
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Patent number: 10314543Abstract: A stand-on physiological sensor (e.g. floormat) measures vital signs and various hemodynamic parameters, including blood pressure and ECG waveforms. The sensor is similar in configuration to a common bathroom scale and includes electrodes that take electrical measurements from a patient's feet to generate bioimpedance waveforms, which are analyzed digitally to extract various other parameters, as well as a cuff-type blood pressure system that takes physical blood pressure measurements at one of the patient's feet. Blood pressure can also be calculated/derived from the bioimpedance waveforms. Measured parameters are transmitted wirelessly to facilitate remote monitoring of the patient for heart failure, chronic heart failure, end-stage renal disease, cardiac arrhythmias, and other degenerative diseases.Type: GrantFiled: January 5, 2016Date of Patent: June 11, 2019Assignee: TOSENSE, INC.Inventors: Matthew Banet, Marshal Singh Dhillon, Susan Meeks Pede, Lauren Nicole Miller Hayward, Arthur Deptala, Jonas Dean Cochran
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Patent number: 10307101Abstract: A method, system, or apparatus for determining a hydration condition of a user. The apparatus includes a housing. The apparatus further includes a light source disposed at an edge of the housing in a first position, wherein the light source, when affixed to a surface of a body, is operable to emit light into the body from the first position. The apparatus further includes an optical sensor disposed at the edge of the housing in a second position, the second position being a fixed distance from the first position to measure backscatter of the light reflected by a muscular-walled tube of the body at a depth below the surface of the body.Type: GrantFiled: December 30, 2015Date of Patent: June 4, 2019Assignee: Halo Wearables, LLCInventors: David R. Miller, Jeffrey M. Lee, Devin W. Miller
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Patent number: 10292663Abstract: A method for monitoring autoregulation includes receiving a blood pressure signal and an oxygen saturation signal, determining a phase difference between the blood pressure signal and the oxygen saturation signal, and determining a patient's autoregulation status based at least in part on a phase difference between the blood pressure signal and the oxygen saturation signal.Type: GrantFiled: June 27, 2016Date of Patent: May 21, 2019Assignee: Covidien LPInventors: Paul S. Addison, James N. Watson
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Patent number: 10271747Abstract: A living-body information measuring device includes plural light-emitting elements, a light-receiving element that is disposed at a position at different distances from the light-emitting elements and that receives reflected light beams that are reflected from a living body when the light-emitting elements emit light beams toward the living body, a control unit that controls the light-emitting elements so that the light-emitting elements successively emit the light beams, and a measurement unit that measures living-body information at plural depths in the living body by using the reflected light beams that are successively received by the light-receiving element.Type: GrantFiled: August 5, 2016Date of Patent: April 30, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Hideaki Ozawa, Hideyuki Umekawa, Tomoaki Kojima, Kazuhiro Sakai, Manabu Akamatsu
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Patent number: 10258268Abstract: A tissue oximetry system employing diffuse optical spectroscopy includes an optical subsystem and an electronics and processing subsystem, together generating modulated optical signals processing a response optical signal in order to obtain measurements of blood oxygen values for a tissue from per-wavelength absorption values. Signal sources generate RF modulation signals, and ADC circuitry generates streams of digital sample values from analog detection signals.Type: GrantFiled: April 24, 2018Date of Patent: April 16, 2019Assignee: Trustees of Boston UniversityInventors: Darren Roblyer, Alyssa Torjesen
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Patent number: 10251584Abstract: Correction of a non-invasive blood glucose measurement measured from a video image. Correction includes irradiating white light on the skin, filtering the white light reflected from the skin by a first wavelength filter and a second wavelength filter, obtaining a first signal including a blood glucose signal and a pulse signal based on a video image generated by the white light filtered by the first wavelength filter, obtaining a second signal including a pulse signal based on a video image generated by the white light filtered by the second wavelength filter, obtaining a blood glucose signal by subtracting the second signal from the first signal, and calculating the amount of blood glucose in a subcutaneous blood vessel based on the obtained blood glucose signal. Moreover, fundamental blood glucose signals can be extracted in real time without collecting blood.Type: GrantFiled: November 25, 2016Date of Patent: April 9, 2019Inventors: Seung Min Jin, Il Seung Yang, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han
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Patent number: 10219754Abstract: An electronic device includes one or more light sources for emitting light toward a body part of a user and one or more optical sensors for capturing light samples while each light source is turned on and for capturing dark samples while the light source(s) are turned off. A signal produced by the one or more optical sensors is demodulated produce multiple demodulated signals. Each demodulated signal is received by one or more decimation stages to produce a signal associated with each light source. Each signal associated with the light source(s) is analyzed to estimate or determine a physiological parameter of the user.Type: GrantFiled: February 12, 2015Date of Patent: March 5, 2019Assignee: Apple Inc.Inventor: Marcelo M. Lamego
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Patent number: 10175169Abstract: An optical sensor is provided. The optical sensor has an emitting system including at least one light emitting device which emits light onto an object; and a detecting system detecting the light which has been emitted by the emitting system and which has propagated through the object. The light emitting device is capable of emitting a plurality of light beams with different wavelengths onto substantially the same position of the object.Type: GrantFiled: October 29, 2015Date of Patent: January 8, 2019Assignee: RICOH COMPANY, LTD.Inventors: Toshihiro Ishii, Yoichiro Takahashi
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Patent number: 10136816Abstract: Methods and devices to monitor an analyte in body fluid are provided. Embodiments include continuous or discrete acquisition of analyte related data from a transcutaneously positioned in vivo analyte sensor automatically or upon request from a user.Type: GrantFiled: August 31, 2010Date of Patent: November 27, 2018Assignee: Abbott Diabetes Care Inc.Inventors: Daniel Milfred Bernstein, Martin J. Fennell, Mark Kent Sloan, Lei He, Gary Alan Hayter, Namvar Kiaie, Jean-Pierre Cole, Marc Barry Taub
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Patent number: 10123744Abstract: There is provided a biosensor capable of improving the S/N ratio of a final photoplethysmographic signal regardless of the change in a noise component such as extraneous light. A biosensor includes a driving signal generation unit for generating a pulsed driving signal, a light-emitting element for emitting light in response to a generated driving signal, a light-receiving section including a light-receiving element for outputting a detection signal in accordance with the intensity of light received and an amplification unit for amplifying a detection signal output from the light-receiving element, a filter unit for removing a pulse wave component from a detection signal output from the light-receiving section to obtain a baseline signal, and a differential amplification unit for taking a difference between a detection signal output from the light-receiving section and a baseline signal obtained by the filter unit.Type: GrantFiled: November 30, 2015Date of Patent: November 13, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Eiji Takahashi
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Patent number: 10092245Abstract: Methods and apparatus are presented for removing motion artifacts from physiological signals produced by a physiological sensor of a wearable device, wherein the physiological sensor includes at least one optical emitter and at least one optical detector. Light emitted by the at least one optical emitter that is scattered by a body of a subject wearing the device is detected, and a physiological information signal therefrom is produced via the at least one optical detector. Light emitted by the at least one optical emitter that is scattered by a light regulating region of the wearable device is detected, and a motion noise information signal is produced via the at least one optical detector. The physiological information signal and the motion noise information signal are processed via at least one processor associated with the wearable device to at least partially remove unwanted motion artifacts from the physiological information signal.Type: GrantFiled: June 16, 2015Date of Patent: October 9, 2018Assignee: Valencell, Inc.Inventors: Steven Francis LeBoeuf, Jesse Berkley Tucker, Michael Edward Aumer
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Patent number: 10072983Abstract: A system and method of dynamically localizing a measurement of parameter characterizing tissue sample with waves produced by spectrometric system at multiple wavelengths and detected at a fixed location of the detector of the system. The parameter is calculated based on impulse response of the sample, reference data representing characteristics of material components of the sample, and path lengths through the sample corresponding to different wavelengths. Dynamic localization is effectuated by considering different portions of a curve representing the determined parameter, and provides for the formation of a spatial map of distribution of the parameter across the sample. Additional measurement of impulse response at multiple detectors facilitates determination of change of the measured parameter across the sample as a function of time.Type: GrantFiled: July 6, 2017Date of Patent: September 11, 2018Assignee: Mayo Foundation for Medical Education and ResearchInventors: Clifton R. Haider, James A. Rose, Gary S. Delp, Barry K. Gilbert
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Patent number: 10067056Abstract: An optical sensor including an irradiation system including at least one light irradiator, the at least one irradiator including a surface emitting laser array having a plurality of light-emitting units, and a lens disposed in an optical path of the plurality of rays of light emitted from the plurality of light-emitting units to cause light exit directions of at least two of the plurality of light-emitting units to be not parallel to each other, such that the at least one irradiator irradiates a same point of a test object with a plurality of rays of light that are not parallel to each other. The optical sensor also including a detection system configured to detect the plurality of rays of light that are emitted from the irradiation system and propagated inside the test object.Type: GrantFiled: December 29, 2015Date of Patent: September 4, 2018Assignee: Ricoh Company, Ltd.Inventors: Masayuki Fujiwara, Toshihiro Ishii, Yoichiro Takahashi, Toshihide Sasaki
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Patent number: 10060856Abstract: A method for test strip recognition and interpretation is provided. The method includes the following steps. A plurality of test strips are provided, wherein the test strips are configured to examine a plurality of physiologic parameters respectively, and the test strips respectively have a plurality of color characteristics corresponding to the physiologic parameters respectively. A plurality of physiologic parameter examinations are performed to the corresponding test strips respectively, so as to obtain a plurality of test reactions. An image of the test strips is captured. The color characteristics and the test reactions of the test strips are obtained according to the image. The physiologic parameters examined by the test strips respectively are obtained according to the color characteristics. The physiologic parameters examined by the test strips are matched with the test reactions to obtain a plurality of physiologic parameter examination results.Type: GrantFiled: September 19, 2017Date of Patent: August 28, 2018Assignee: HTC CorporationInventors: Fu-Chiang Chou, Yung-Lung Chang, Fu-Cheng Fan, Yi-Chi Lin, Chin-Hua Hsieh, Wei-Cheng Hsu, Syuan-He Shih