Oximeters Patents (Class 356/41)
  • Patent number: 10448870
    Abstract: 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: Grant
    Filed: December 12, 2013
    Date of Patent: October 22, 2019
    Assignee: WristDocs LLC
    Inventors: Mark Vastola, Jacob Conner, Kevin Whitworth, Ryan Woolsey
  • Patent number: 10420491
    Abstract: 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: Grant
    Filed: May 26, 2016
    Date of Patent: September 24, 2019
    Assignee: LVL Technologies, Inc.
    Inventors: Nithin O. Rajan, Dustin M. Freckleton, Paulo E. Xavier da Silveira, Byron Olson
  • Patent number: 10403919
    Abstract: 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: Grant
    Filed: September 21, 2017
    Date of Patent: September 3, 2019
    Assignee: ESS Tech, Inc.
    Inventors: Craig E. Evans, Yang Song
  • Patent number: 10390717
    Abstract: 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: Grant
    Filed: November 30, 2016
    Date of Patent: August 27, 2019
    Assignee: Huntleigh Technology Limited
    Inventors: Stephen John Cook, Francis Gregory Baily, Philip Morris, Nigel A J Gough
  • Patent number: 10376223
    Abstract: 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: Grant
    Filed: August 2, 2016
    Date of Patent: August 13, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hideyuki Umekawa, Kazuhiro Sakai, Manabu Akamatsu, Tomoaki Kojima
  • Patent number: 10368749
    Abstract: 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: Grant
    Filed: August 22, 2017
    Date of Patent: August 6, 2019
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10335070
    Abstract: 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: Grant
    Filed: July 29, 2016
    Date of Patent: July 2, 2019
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10327652
    Abstract: 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: Grant
    Filed: October 15, 2014
    Date of Patent: June 25, 2019
    Assignee: Loughborough University
    Inventors: Sijung Hu, Vicente Azorin-Peris
  • Patent number: 10321862
    Abstract: 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: Grant
    Filed: February 13, 2012
    Date of Patent: June 18, 2019
    Assignee: CAS Medical Systems, Inc.
    Inventors: Matthew Dalene, Karen Duffy
  • Patent number: 10314543
    Abstract: 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: Grant
    Filed: January 5, 2016
    Date of Patent: June 11, 2019
    Assignee: TOSENSE, INC.
    Inventors: Matthew Banet, Marshal Singh Dhillon, Susan Meeks Pede, Lauren Nicole Miller Hayward, Arthur Deptala, Jonas Dean Cochran
  • Patent number: 10314526
    Abstract: 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: Grant
    Filed: February 1, 2017
    Date of Patent: June 11, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Toru Shimuta, Yasutaka Fujii
  • Patent number: 10307101
    Abstract: 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: Grant
    Filed: December 30, 2015
    Date of Patent: June 4, 2019
    Assignee: Halo Wearables, LLC
    Inventors: David R. Miller, Jeffrey M. Lee, Devin W. Miller
  • Patent number: 10292663
    Abstract: 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: Grant
    Filed: June 27, 2016
    Date of Patent: May 21, 2019
    Assignee: Covidien LP
    Inventors: Paul S. Addison, James N. Watson
  • Patent number: 10271747
    Abstract: 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: Grant
    Filed: August 5, 2016
    Date of Patent: April 30, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hideaki Ozawa, Hideyuki Umekawa, Tomoaki Kojima, Kazuhiro Sakai, Manabu Akamatsu
  • Patent number: 10258268
    Abstract: 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: Grant
    Filed: April 24, 2018
    Date of Patent: April 16, 2019
    Assignee: Trustees of Boston University
    Inventors: Darren Roblyer, Alyssa Torjesen
  • Patent number: 10251584
    Abstract: 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: Grant
    Filed: November 25, 2016
    Date of Patent: April 9, 2019
    Inventors: Seung Min Jin, Il Seung Yang, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han
  • Patent number: 10219754
    Abstract: 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: Grant
    Filed: February 12, 2015
    Date of Patent: March 5, 2019
    Assignee: Apple Inc.
    Inventor: Marcelo M. Lamego
  • Patent number: 10175169
    Abstract: 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: Grant
    Filed: October 29, 2015
    Date of Patent: January 8, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshihiro Ishii, Yoichiro Takahashi
  • Patent number: 10136816
    Abstract: 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: Grant
    Filed: August 31, 2010
    Date of Patent: November 27, 2018
    Assignee: 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
  • Patent number: 10123744
    Abstract: 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: Grant
    Filed: November 30, 2015
    Date of Patent: November 13, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Eiji Takahashi
  • Patent number: 10092245
    Abstract: 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: Grant
    Filed: June 16, 2015
    Date of Patent: October 9, 2018
    Assignee: Valencell, Inc.
    Inventors: Steven Francis LeBoeuf, Jesse Berkley Tucker, Michael Edward Aumer
  • Patent number: 10072983
    Abstract: 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: Grant
    Filed: July 6, 2017
    Date of Patent: September 11, 2018
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Clifton R. Haider, James A. Rose, Gary S. Delp, Barry K. Gilbert
  • Patent number: 10067056
    Abstract: 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: Grant
    Filed: December 29, 2015
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Fujiwara, Toshihiro Ishii, Yoichiro Takahashi, Toshihide Sasaki
  • Patent number: 10060856
    Abstract: 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: Grant
    Filed: September 19, 2017
    Date of Patent: August 28, 2018
    Assignee: HTC Corporation
    Inventors: Fu-Chiang Chou, Yung-Lung Chang, Fu-Cheng Fan, Yi-Chi Lin, Chin-Hua Hsieh, Wei-Cheng Hsu, Syuan-He Shih
  • Patent number: 10045721
    Abstract: Systems, apparatuses and methods may provide for a transmit circuit including a light source and a receive circuit including a photodetector and a transimpedance amplifier (TIA) coupled to the photodetector. Additionally, a calibration circuit may be coupled to the transmit circuit and the receive circuit, wherein the calibration circuit includes a current controller to set an operational current of the light source to a minimum value that results in a target output voltage of the receive circuit. In one example, the gain of the TIA remains substantially constant during calibration of the receive circuit.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: August 14, 2018
    Assignee: Intel Corporation
    Inventors: Mohammad U. Abbasi, Sendill K. Gnanaeswaran, Nicholas P. Cowley
  • Patent number: 10028681
    Abstract: 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 driving signal generating unit that generates a pulse-form driving signal, a light-emitting element that emits light in response to the generated driving signal, a light-receiving element that outputs a detection signal based on an intensity of received light, an amplifying unit including first and second operational amplifiers that amplify the outputted detection signal, an offset signal generating unit and a voltage dividing resistor group that generate a pulse-form offset voltage for offsetting a reference potential of the first operational amplifier when amplifying the detection signal and apply the offset voltage to the first operational amplifier, and a computation unit that obtains biological information by processing the detection signal amplified by the amplifying unit.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: July 24, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hirofumi Tsuchimoto, Hiroyuki Nakaji
  • Patent number: 10031076
    Abstract: A handheld infrared spectroscopy device and method of use. The device is a hand-held spectroscopy device, that may be integral to a mobile phone or smart device such as a smart phone, tablet, personal digital assistant, computer or other device that is portable and capable of performing applications. A liquid sample port internal to the device and in close proximity to the device spectrometer performs infrared spectra analysis on liquid samples, allowing both portability as well as highly sophisticated and specific spectral analysis of liquid samples. The device has wireless communication capability, enabling transmission of data and spectral imagery across the globe.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: July 24, 2018
    Assignee: QUICK LLC
    Inventors: David Anthony Mucci, Ronald Gary Clark, Jr., James Scott Fox
  • Patent number: 10016153
    Abstract: Provided are a photoplethysmographic measurement apparatus, a photoplethysmographic measurement method, and an apparatus for measuring a biosignal. The photoplethysmographic measurement apparatus includes a probe, a light emitter comprising a nonelectrical light source and disposed at one end of the probe, the light emitter configured to illuminate a measurement part, and a light receiver disposed at another end of the probe and configured to detect light reflected or transmitted by the illuminated measurement part.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: July 10, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sang Yun Park
  • Patent number: 9999382
    Abstract: An apparatus and method for noninvasive measurement of a fluorescent analyte concentration in the blood of a patient by exciting the blood and the analyte at two wavelength ranges and measuring the emission spectrum of the fluorescent analyte when (i) the difference of emission intensities at the excitation wavelength ranges of the fluorescent analyte is greater than that of background fluorophores, and (ii) when blood absorbance at the two excitation wavelength ranges is similar. An apparatus and method for measurement of a fluorescent analyte concentration in the blood of a patient is provided.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 19, 2018
    Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Gary M Brittenham, Herbert Stepp, Georg Hennig
  • Patent number: 9989560
    Abstract: A system is disclosed for detecting and calculating the level of ambient and/or environmental noise, such as electromagnetic interference generated by electric power lines, ambient lights, light dimmers, television or computer displays, power supplies or transformers, and medical equipment. In some embodiments, the system performs frequency analysis on the interference signal detected by light photodetectors and determines the power of the interference signal concentrated in the analyzed frequency bands. The worst-case interference level can be determined by selecting the maximum from the computed power values. In some embodiments, the determined interference signal power can be compared with the noise tolerance of a patient monitoring system configured to reliably and noninvasively detect physiological parameters of a user. The results of the comparison can be presented to the user audio-visually. In some embodiments, the system can be used to perform spot check measurements of electromagnetic interference.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: June 5, 2018
    Assignee: MASIMO CORPORATION
    Inventors: Jeroen Poeze, Jesse Chen, Mathew Paul, Marcelo Lamego, Massi Joe E. Kiani
  • Patent number: 9955919
    Abstract: A monitoring device configured to be attached to the ear of a person includes a base, an earbud housing extending outwardly from the base that is configured to be positioned within an ear of a subject, and a cover surrounding the earbud housing. The base includes a speaker, an optical emitter, and an optical detector. The cover includes light transmissive material that is in optical communication with the optical emitter and the optical detector and serves as a light guide to deliver light from the optical emitter into the ear canal of the subject wearing the device at one or more predetermined locations and to collect light external to the earbud housing and deliver the collected light to the optical detector.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: May 1, 2018
    Assignee: Valencell, Inc.
    Inventors: Steven Francis LeBoeuf, Jesse Berkley Tucker, Michael Edward Aumer, Steven Matthew Just
  • Patent number: 9949675
    Abstract: A noninvasive blood measurement platform may be used to determine the amounts of various constituents of the blood based on the bulk absorption characteristics of the blood. The platform may measure bulk absorption of energy such as, a broad-spectrum light, to determine maximum and minimum blood volumes. The platform may measure bulk absorption of energy at the maximum and minimum blood volumes. The bulk absorption measurements may be transformed using a transformation operation to determine bulk absorption characteristics in terms of frequency and/or wavelength. A time-varying component of the bulk absorption characteristics may be derived by comparing the bulk absorption characteristics at the maximum blood volume to the bulk absorption characteristics at the minimum blood volume. Multivariate analysis may be performed on the time-varying component to determine the amount of the one or more constituents of the blood.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: April 24, 2018
    Assignee: Convergence Biometrics, LLC
    Inventor: David R. Miller
  • Patent number: 9892569
    Abstract: A method for predicting an instant at which a predefined fatigue degree is expected to be reached in a vehicle system for fatigue detection, includes: (i) detecting the fatigue characteristic by continuously ascertaining the current fatigue degree of the vehicle operator; (ii) ascertaining a change in the fatigue degree over time within a predefinable time interval of the fatigue characteristic, and/or supplying an empirically determined change in fatigue degree over time; and (iii) ascertaining the instant at which a predefined fatigue degree is expected to be reached, based on the ascertained and/or supplied change in the fatigue degree.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: February 13, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Andreas Offenhaeuser, Erik Lesser
  • Patent number: 9872293
    Abstract: A sensor network may be configured to operate in extreme temperature environments. A sensor may be configured to generate a frequency carrier, and transmit the frequency carrier to a node. The node may be configured to amplitude modulate the frequency carrier, and transmit the amplitude modulated frequency carrier to a receiver.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: January 16, 2018
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventor: Michael Krasowski
  • Patent number: 9865895
    Abstract: 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: Grant
    Filed: March 7, 2014
    Date of Patent: January 9, 2018
    Assignee: ESS Tech, Inc.
    Inventors: Craig E. Evans, Yang Song
  • Patent number: 9854999
    Abstract: A pulse photometer includes a light emitter, a light detector, a first signal separator that separates a first signal component and a first noise component, a second signal separator that separates a second signal component and a second noise component, a first determining section, a second determining section, and a concentration calculating section that calculates a concentration of a light absorption material in blood of the subject based on a fundamental frequency of the first signal component or a fundamental frequency of the second signal component.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: January 2, 2018
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Yoshinori Ueda, Teiji Ukawa, Kazumasa Ito, Hideki Fujisaki
  • Patent number: 9848785
    Abstract: Disclosed herein is a framework for facilitating patient signal analysis. In accordance with one aspect, first and second patient signal data are received from a patient monitor. The first and second patient signal data may then be segmented into respective first and second regions of interest, from which respective first and second waveform parameters may be extracted. One or more morphology indices may then be generated based on the first and second waveform parameters to compare shapes of the first and second regions of interest.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: December 26, 2017
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 9848808
    Abstract: An apparatus and method for non-invasively determining a blood oxygen parameter value of a subject's tissue is provided. An embodiment of the method includes the steps of: a) providing a spectrophotometric sensor that includes a processing portion and a transducer, b) detecting at least a portion of transmitted light after passage through the subject's tissue and producing initial signal data from the detected light; and c) using the processing portion to: (i) determine a value representative of an attenuation of at least one wavelength of light detected; (ii) determine whether the representative attenuation value is outside a predefined range of attenuation values; and (iii) determine the blood oxygen parameter value using a first interrogation or an alternate interrogation setting.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: December 26, 2017
    Assignee: CAS Medical Systems, Inc.
    Inventor: Paul Benni
  • Patent number: 9829486
    Abstract: A sensor device includes a flow path and a metal layer disposed in the flow path. The flow path is configured to allow a sample containing analytes to flow and to allow a carrier to be disposed therein. The carrier has acceptors that are fixed on a surface thereof and specifically bound with the analytes for producing aggregates. The flow path includes an aggregate trapping section at which the analytes locally concentrate to the section. This sensor device has high detection sensitivity with a simple structure.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: November 28, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yusuke Kitagawa, Kiyoshi Hashimotodani, Susumu Fukushima
  • Patent number: 9820681
    Abstract: Embodiments disclosed herein may describe systems and methods for reducing nuisance alarms using probability and/or accuracy of a measured physiological parameter, such as the pulse rate or SpO2 measurement generated by a pulse oximeter. Embodiments may include methods for adjusting a predetermined alarm threshold based on the probability distribution of the estimated pulse rate and/or oxygen saturation of a patient's blood.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: November 21, 2017
    Assignee: Covidien LP
    Inventor: Clark R. Baker, Jr.
  • Patent number: 9801558
    Abstract: Ruptured Abdominal Aortic Aneurysms (AAA) cause a large number of deaths annually. Ruptures occur even in people who are already diagnosed with AAA and are being monitored. The reason is that the interval between tests is too long because of the need to visit a pathological facility with imaging equipment. It is preferable to estimate the progress of AAA frequently, once detected, in a non-invasive manner, preferably at the subject's home, without the need for the subject to visit a pathological facility. A device is disclosed for detecting a state of a vascular pathology of a subject, comprising a sensor signal unit (103) for providing a signal representative of a blood volume in a body part of a subject, a comparator (107) for comparing the sensor signal with a reference signal, and a user interface (109) for conveying a result based on the comparison to a user of the device.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: October 31, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Geert Gui Georges Morren
  • Patent number: 9743868
    Abstract: Systems, methods, and devices of the various embodiments provide a device capable of determining a blood property based at least in part on the measurement of the amount of light received by a receiver circuit with a limited current capacity by charging a capacitor with a low voltage power supply and intermittently discharging the capacitor through a light emitting diode. In some embodiments the device may be a pulse oximeter capable of taking blood oxygen readings. In some embodiments the device may be a heart rate monitor to determine a heart rate based on an amount of light passed through tissue. The various embodiments may enable pulse oximeters and/or heart rate monitors to be incorporated into small unobtrusive body patches, while enabling the pulse oximeters to operate from a power output equivalent to that of a small coin cell battery or printed cell battery.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: August 29, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Robert Scott Ballam, Robert Bruce Ganton
  • Patent number: 9739663
    Abstract: 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: Grant
    Filed: April 29, 2013
    Date of Patent: August 22, 2017
    Assignee: MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH
    Inventors: Clifton R. Haider, Barry K. Gilbert, Gary S. Delp, James A. Rose
  • Patent number: 9700249
    Abstract: An apparatus includes a sensor body, a circuit board, a cable, at least one light emitting device, and at least one photodetector. The circuit board is enclosed within the sensor body and includes at least one conductive trace and at least one aperture. The cable is coupled to the at least one conductive trace. The cable includes a shield conductor and a signal conductor. The at least one light emitting device is coupled to the circuit board and is configured to emit light into a tissue. The at least one photodetector includes a planar active area coupled to the circuit board and is configured to provide an output signal based on light detected by the active area. The planar active area is aligned with the aperture. The output signal is coupled to the cable.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: July 11, 2017
    Assignee: Nonin Medical, Inc.
    Inventors: Timothy L. Johnson, Franz Ulrich, Philip O. Isaacson
  • Patent number: 9700398
    Abstract: Apparatus and method for harvesting selected vessels in the body of a patient include manual manipulation of a rigid dissecting endoscope and the reconfiguration thereof to facilitate tissue dissection and tissue dilation in the formation of an anatomical space about the vessel within which side-branch vessels may be manipulated in preparation for severance and removal of the vessel from the anatomical space.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: July 11, 2017
    Assignee: MAQUET CARDIOVASCULAR LLC
    Inventor: Michael C. Stewart
  • Patent number: 9675259
    Abstract: A physiological function detecting earphone includes an earphone body, an earplug mounted at one side of the earphone body and defining a window, a light processing module including a light sensing module towards the window, and a signal processing module. A detecting method using the earphone by a participant includes the steps of: the participant inserts the earplug in the ear canal thereof; the light sensing module senses the changes of light emitted through the window and then reflected by the wall of the ear canal; the light processing module processes the reflected light changes to get photoplethysmography (PPG) signals; and the signal processing module receives and processes the PPG signals to get physiological information of the participant.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 13, 2017
    Assignee: Cheng Uei Precision Industry Co., Ltd.
    Inventors: James Cheng Lee, Kuo Yang Wu, Bor Kuan Lu, Wen Shung Hu
  • Patent number: 9675250
    Abstract: A method and system for optical measuring one or more vital signs of a human is described. The method includes generating an optical Pulse Width Modulated (PWM) signal modulated in accordance with a predetermined Pulse Width Modulation scheme. The PWM scheme includes one or more Pulse Width Modulations having different modulation frequencies. The method also includes applying the PWM optical signal to a measurement location in a blood perfused body tissue of the human and receiving light originated back from the measurement location. A photo current signal of a time response of the blood perfused body tissue to the PWM optical signal is indicative of the vital signs. The method includes generating a voltage signal from the photo current signal and processing the voltage signal for determining the vital signs.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: June 13, 2017
    Assignee: OXIRATE, Inc.
    Inventor: Boris Tverskoy
  • Patent number: 9603559
    Abstract: An apparatus for measuring capillary refill time has a measurement module containing at least two radiation sources and at least one detector configured to detect radiation from each source that interacts with and is received from a measurement region of a patient or subject. One radiation source may be characterized by a wavelength that is absorbed substantially equally by oxyhemoglobin and deoxyhemoglobin. The other radiation source may be substantially unaffected by the presence or absence of blood in the measurement region. The measurement module may be applied against a measurement region of a patient for a first time period, and the released from the measurement region for a second time period, and detected signals processed to quantitatively evaluate capillary refill time.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 28, 2017
    Assignee: Children's Medical Center Corporation
    Inventors: Vassilios Bezzerides, Mark Ian Neuman
  • Patent number: 9560971
    Abstract: A physiological information measuring apparatus includes a first detection unit, having a first light emitting unit and a first light receiving unit, separated from one another by a first distance. A second detection unit of the physiological information measuring apparatus has a second light emitting unit and a second light receiving unit, separated from one another by a second, different distance. Alternatively, the second detection unit shares the first light emitting unit with the first detection unit and has a second light receiving unit. Alternatively, the second detection unit shares the first light receiving unit with the first detection unit and has a second light emitting unit. A measuring unit of the physiological information measuring apparatus measures the physiological information of a user based on light received by the light receiving unit or light receiving units.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: February 7, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Atsushi Narusawa
  • Patent number: 9526431
    Abstract: Embodiments of the present invention comprise systems and methods for noninvasion measurements of physiological properties of tissues. The system comprises a light emitter, an optical detector, a mechanical sensor and a processor. The light emitter is capable of emitting light of at least two different wavelengths and comprises at least one light source. The processor is capable of evaluating physiological properties of the tissues from measurements of the optical and the mechanical sensor. More precisely, the processor is capable of evaluating physiological properties of venous blood by using data measured by the mechanical sensor and the optical detector. For example, the oxygenation of venous blood can be measured. Furthermore, the systems can optionally comprise a light emitter which emits three wavelengths and/or the light emitter and the optical detector are arranged in reflection geometry and are located at a distance of at most 10 mm from each other.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: December 27, 2016
    Assignee: BIOVOTION AG
    Inventors: Pavel Zakharov, Mark Talary, Andreas Caduff