Detector Responsive To Movement Induced Variation In Impedance Of Body To Electric Current Patents (Class 600/536)
  • Patent number: 11317815
    Abstract: A sensor device for EIT imaging comprises an electrode array for measuring an impedance distribution, with at least one sensor for determining spatial orientation of the electrode array coupled to the electrode array. EIT imaging instrument is connectable to a sensor for determining spatial orientation of a test person, and optionally in addition connectable to a sensor for gathering information on electrical and/or acoustic activity and/or a sensor for gathering information on dilation. A computing device is connected or integrated for adjusting impedance data based on spatial data, which spatial data describe the spatial orientation of a test subject. An EIT imaging method for measuring an impedance distribution and adjusting said measured impedance distribution comprises measuring impedance distribution by using an impedance distribution measuring device comprising an electrode array, and transforming the measured impedance distribution into EIT images.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 3, 2022
    Inventors: Josef X. Brunner, Pascal Olivier Gaggero, Nicolas Robitaille
  • Patent number: 11259580
    Abstract: A health monitoring garment is provided. The health monitoring garment includes an article of clothing comprising at least one compression section to provide a snug fit against a person wearing the article of clothing and a sensor island. The sensor island includes stretchable circuitry, two or more sensors, one or more power supplies, and optionally one or more wireless communication modules within a self-contained unit. At least one of the sensors comprises a stretchable sensor which may be a respiration sensor. The sensor unit may be provided independent of the health monitoring garment or as a complete system. The sensor island and compression section of the article of clothing also include fasteners of complementary geometries for reversible attachment and disengagement of the sensor island from the compression section.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 1, 2022
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Trang T. Young, Mark C. Cridge, Scott A. Miller, Joshua E. Nieman, Gary N. Cupp, Kristin M. Cable
  • Patent number: 11253169
    Abstract: The invention provides a multi-sensor system that uses an algorithm based on adaptive filtering to monitor a patient's respiratory rate. The system features a first sensor which is selected from the group consisting of an impedance pneumography sensor, an ECG sensor, a PPG sensor, and a motion sensor (e.g., an accelerometer) configured to attach to the patient's torso and measure therefrom a motion signal. The system further comprises (iii) a processing system, configured to operably connect to the first and motion sensors, and to determine a respiration rate value by applying filter parameters obtained from the first sensor signals to the motion sensor signals.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: February 22, 2022
    Assignee: SOTERA WIRELESS, INC.
    Inventors: Matthew Banet, Devin McCombie, Marshal Dhillon
  • Patent number: 11160972
    Abstract: A wearable cardiac monitoring and treatment device includes a garment, a plurality of ECG electrodes and a plurality of therapy electrodes supported by the garment. A fastener is configured to secure the garment about a torso of the patient for a prescribed duration. A disengagement sensor to provides an indication of disengagement of the fastener prior to expiration of the prescribed duration in which the garment is no longer secured about the torso of the patient. The device includes a therapy delivery circuit coupled to the plurality of therapy electrodes and configured to deliver one or more therapeutic pulses. A controller coupled to therapy delivery circuit is configured to analyze an ECG signal monitored by the plurality of ECG electrodes and, upon detecting one or more treatable arrhythmias, cause the therapy delivery circuit to deliver the one or more therapeutic pulses to the patient.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: November 2, 2021
    Assignee: ZOLL Medical Corporation
    Inventors: Gary A Freeman, James A Patterson, III, Christopher L Swenglish, Jason T Whiting
  • Patent number: 11096629
    Abstract: The present disclosure is directed to an impedance spectroscopy system for bio-impedance measurement. The impedance spectroscopy system includes a signal generator configured to generate a signal with a broadband frequency spectrum and to generate an analog injection current from the signal with the broadband frequency spectrum. The analog injection current has a high pass frequency characteristic. The impedance spectroscopy system also includes an amplifier configured to measure a voltage signal in response to the analog injection current and to simultaneously measure a biopotential signal. Further, the impedance spectroscopy system includes a processor configured to analyze the voltage signal to derive a bio-impedance spectrum as well to derive further information from the biopotential signal.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: August 24, 2021
    Assignee: Stichting IMEC Nederland
    Inventors: Pieter Harpe, Jiawei Xu
  • Patent number: 11026578
    Abstract: Patient electrodes, patient monitors, defibrillators, wearable defibrillators, software and methods may warn when an electrode stops being fully attached to the patient's skin. A patient electrode includes a pad for attaching to the skin of a patient, a lead coupled to the pad, and a contact detector that can change state, when the pad does not contact fully the skin of the patient. When the detector changes state, an output device may emit an alert, for notifying a rescuer or even the patient.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: June 8, 2021
    Assignee: West Affum Holdings Corp.
    Inventors: Blaine Krusor, Isabelle Banville, Joseph Leo Sullivan, David Peter Finch, Daniel Ralph Piha, Laura Marie Gustavson, Kenneth Frederick Cowan, Richard C. Nova, Carmen Ann Chacon, Gregory T. Kavounas
  • Patent number: 10702166
    Abstract: This invention is directed to devices and methods for assessing a patient. The devices have at least one impedance measuring element functionally connected to a programmable element, programmed to analyze an impedance measurement, and to provide an assessment of at least one respiratory parameter of the patient. Preferably the device includes electronics which aid in calibration, signal acquisition, conditioning, and filtering.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: July 7, 2020
    Assignee: Respiratory Motion, Inc.
    Inventors: Jenny E. Freeman, Michael Lalli, Alexander Panasyuk, Malcolm G. Bock, Jordan Brayanov
  • Patent number: 10413475
    Abstract: A wearable cardiopulmonary resuscitation assist device or system including: a wearable article to be worn by a cardiopulmonary resuscitation performer or a patient, for assisting administration of cardiopulmonary resuscitation by the performer; at least one sensor for measuring at least one parameter to assist in cardiopulmonary resuscitation; at least one feedback component for conveying feedback information based on the parameter to the performer for assisting the performer in performing cardiopulmonary resuscitation; and a processing unit, the processing unit being configured to receive the at least one parameter from the at least one sensor and to send information based on the parameter to the at least one feedback component. Also a method for training or improving cardiopulmonary resuscitation procedures using the device.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: September 17, 2019
    Assignee: PHYSIO-CONTROL, INC.
    Inventors: Corey James Centen, Nilesh Patel
  • Patent number: 10314517
    Abstract: A wearable respiration monitoring system and associated method that is configured to (i) determine three dimensional displacement of the spine of a subject with respect to the axial displacement of the subject's chest wall, (ii) process the three dimensional anatomical data, (iii) determine at least one respiration parameter associated with the monitored subject as a function of the three dimensional anatomical data, and (iv) generate at least one respiration parameter signal representing the respiration parameter.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 11, 2019
    Assignee: Medical Design Solutions, Inc.
    Inventor: Robert T Stone
  • Patent number: 10064570
    Abstract: A wearable respiration monitoring system and associated method that is configured to (i) determine three dimensional displacement of the spine of a subject with respect to the axial displacement of the subject's chest wall, (ii) process the three dimensional anatomical data, (iii) determine at least one respiration parameter associated with the monitored subject as a function of the three dimensional anatomical data, and (iv) generate at least one respiration parameter signal representing the respiration parameter.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: September 4, 2018
    Inventor: Robert T Stone
  • Patent number: 10045738
    Abstract: The disclosure describes tissue resistance measurement techniques. To avoid errors caused by bandwidth limitations of the amplifier that amplifies a signal used to determine the tissue resistance, the disclosure describes determining values at different frequencies, where the values include respective error values. The respective error values are proportional to the respective frequencies, and based on this relationship the error value can be removed from the tissue resistance measurement.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: August 14, 2018
    Assignee: Medtronic Bakken Research Center B.V.
    Inventors: Wouter Hubert Martha Adelaïde Bracke, Jeroen Jacob Arnold Tol, Egbertus Johannes Maria Bakker
  • Patent number: 10046170
    Abstract: Methods and apparatus are provided for determining a defibrillation treatment protocol in an external defibrillator whereby a user may override a CPR-first default protocol. The method includes following steps configured in a defibrillator controller of issuing an inquiry; waiting for a response to the inquiry for a set time; ordering a CPR treatment protocol if no response is received within the set time; analyzing a response; ordering a CPR treatment protocol upon receiving a non-affirmative response to the inquiry; and ordering a shock treatment protocol upon receiving an affirmative response to the inquiry. Upon selecting a shock treatment protocol, the defibrillator performs a shock analysis under the shock treatment protocol, and either orders a CPR treatment protocol if shock treatment is not indicated by the shock analysis or provides a defibrillation shock if shock treatment is indicated by the shock analysis. Queries may be presented to a user in visual, audible, or both visual and audible format.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: August 14, 2018
    Assignee: PHYSIO-CONTROL, INC.
    Inventors: Isabelle Banville, David R. Hampton, Gregory T. Kavounas, Richard C. Nova
  • Patent number: 9980664
    Abstract: A biological information measurement system includes: a plurality of electrodes; a current source connected to the plurality of electrodes to supply a current thereto; a measurement unit for measuring impedance from a potential difference between the plurality of electrodes; a detector for detecting values of specific peaks from chronological data of the impedance; an envelope generator for generating an envelope of values of the specific peaks; and an output unit for outputting information of the envelope as biological information.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: May 29, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Jeffry Bonar Fernando, Koji Morikawa, Jun Ozawa
  • Patent number: 9761112
    Abstract: The invention relates to an assistance terminal (5, 6a, 6b) including a housing (5) and at least one terminal (6a, 6b) for remotely monitoring a person (1) connected to a medical assistance and/or monitoring device (3).
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: September 12, 2017
    Assignee: UNIVERSITE PIERRE ET MARIE CURIE (PARIS 6)
    Inventors: Thomas Similowski, Jesus Gonzalez-Bermejo, Christian Straus, Julien Hurbault, Didier Foret, Nathalie Franckhauser, Sylvie Rouault
  • Patent number: 9462975
    Abstract: The present invention relates to the field of ambulatory and non-invasive monitoring of a plurality of physiological parameters of a monitored individual. The invention includes a physiological monitoring apparatus with an improved monitoring apparel, the apparel having sensors for monitoring parameters reflecting pulmonary function and/or parameters reflecting cardiac function and/or parameters reflecting the function of other organ systems. The apparel is preferably also suitable for medical, athletic, and for other uses. The sensors include one or more inductive plethysmographic sensors positioned to monitor at least basic pulmonary parameters, and optionally also basic cardiac parameters. The sensors include one or more ECG sensor electrodes that preferably include a flexible, conductive fabric. The monitoring apparatus also includes an electronic unit for receiving data from the sensors and for storing the data in a computer-readable medium and/or wirelessly transmitted the data.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: October 11, 2016
    Assignee: adidas AG
    Inventors: Marvin A. Sackner, Dana Michael Inman
  • Patent number: 9440036
    Abstract: Described herein are various embodiments of an oxygen concentrator system and method of delivering oxygen enriched gas to a user. In some embodiments, oxygen concentrator system includes one or more components that improve the efficiency of oxygen enriched gas delivery during operation of the oxygen concentrator system.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: September 13, 2016
    Assignee: InovaLabs, LLC
    Inventors: William R. Wilkinson, Dragan Nebrigic
  • Patent number: 9375165
    Abstract: This invention includes improved IP sensors that both have improved sensitivity, performance, and other properties and are multifunctional. The improved IP sensors have IP sensor conductors with waveforms having legs that are substantially parallel throughout the operating range of stretch. The multifunctional IP sensors include, in addition to IP sensors, accessory conductors, additional sensors, and other compatible modules. This inventions also includes embodiments of apparel incorporating the improved IP sensors. This apparel can range from band-like to shirt-like, and so forth, and include one or more IP sensors sensitive to expansions and contractions of underlying regions of a monitored subject.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: June 28, 2016
    Assignee: adidas AG
    Inventor: Yoav Gal
  • Patent number: 9307915
    Abstract: The invention provides a system and method for measuring vital signs (e.g. SYS, DIA, SpO2, heart rate, and respiratory rate) and motion (e.g. activity level, posture, degree of motion, and arm height) from a patient. The system features: (i) first and second sensors configured to independently generate time-dependent waveforms indicative of one or more contractile properties of the patient's heart; and (ii) at least three motion-detecting sensors positioned on the forearm, upper arm, and a body location other than the forearm or upper arm of the patient. Each motion-detecting sensor generates at least one time-dependent motion waveform indicative of motion of the location on the patient's body to which it is affixed.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 12, 2016
    Assignee: Sotera Wireless, Inc.
    Inventors: Devin McCombie, Marshal Dhillon, Matt Banet
  • Patent number: 9179849
    Abstract: A mobile plethysmographic device for detecting a premature ventricular contraction event is disclosed herein. The mobile plethysmographic device generates a pleth waveform, which is automatically screened by algorithms that measure the waveform to correlate, detect and store aberrations related to heart anomalies. A premature ventricular contraction event for a patient is determined based on an identification of a time interval of the pleth waveform that is below the threshold minimum time interval followed immediately by a time interval that is above the threshold maximum tine interval.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: November 10, 2015
    Assignee: Impact Sports Technologies, Inc.
    Inventors: Donald Brady, Nikolai Rulkov, Mark Hunt
  • Patent number: 9173594
    Abstract: The invention provides a system for measuring respiratory rate (RR) from a patient. The system includes an impedance pneumography (IP) sensor, connected to at least two electrodes, and a processing system that receives and processes signals from the electrodes to measure an IP signal. A motion sensor (e.g. an accelerometer) measures at least one motion signal (e.g. an ACC waveform) describing movement of a portion of the patient's body to which it is attached. The processing system receives the IP and motion signals, and processes them to determine, respectfully, frequency-domain IP and motion spectra. Both spectra are then collectively processed to remove motion components from the IP spectrum and determine RR. For example, during the processing, an algorithm determines motion frequency components from the frequency-domain motion spectrum, and then using a digital filter removes these, or parameters calculated therefrom, from the IP spectrum.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: November 3, 2015
    Assignee: SOTERA WIRELESS, INC.
    Inventors: Matt Banet, Marshal Dhillon, Devin McCombie
  • Patent number: 9144385
    Abstract: A mobile plethysmographic device for detecting a premature atrial contraction event is disclosed herein. The mobile plethysmographic device generates a pleth waveform, which is automatically screened by algorithms that measure the waveform to correlate, detect and store aberrations related to heart anomalies. A premature atrial contraction event for a patient is determined based on an identification of a time interval of the pleth waveform that is below the threshold minimum time interval followed immediately by a time interval that is above the threshold maximum tine interval.
    Type: Grant
    Filed: March 7, 2015
    Date of Patent: September 29, 2015
    Assignee: Impact Sports Technologies, Inc.
    Inventors: Donald Brady, Nikolai Rulkov, Mark Hunt
  • Patent number: 9050024
    Abstract: Methods and apparatus for detection and treatment of respiratory disorders using implanted devices are described. In one form, afferent nerves are electrically or electro-mechanically stimulated to increase the tone of upper airway muscles. Detection of respiratory disorders is carried out using electrodes implanted in sub-pectoral regions. Open and closed airway apneas are distinguished using a combination of acoustic detectors and electrical transducers.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: June 9, 2015
    Assignee: RedMed Limited
    Inventors: Anthony John Ujhazy, Gregory Newton Brewer
  • Publication number: 20150126879
    Abstract: A method, apparatus, and system for measuring respiratory effort of a subject are provided. A thorax effort signal and an abdomen effort signal are obtained. The thorax effort signal and the abdomen effort signal are each divided into a volume-contributing component of the respiratory effort and a paradox component. The paradox component represents a non-volume-contributing component of the respiratory effort. The abdomen paradox component is negatively proportional to the thoracic paradox component. The thorax effort signal or the abdomen effort signal or both are weighted by a weight factor to obtain a volume-proportional signal. The volume-proportional signal is proportional to the actual respiratory volume of the respiratory effort. A calibration factor for calibrating the thorax effort signal and the abdomen effort signal is obtained by optimizing the weight factor by minimizing thoracic paradox component and the abdomen paradox component.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 7, 2015
    Inventors: Sveinbjorn HOSKULDSSON, Haraldur Tomas HALLGRIMSSON, Gudjon Teitur SIGURDARSON
  • Patent number: 8911380
    Abstract: A respiration monitoring system includes a thermoelectric generator that may be mounted within a mask enclosure or free-standing, covering all or part of the nose and/or mouth of a subject. A first temperature sensor is attached to the thermoelectric generator for measuring the subject's breath. A power controller develops a difference between a preset temperature and the subject's breath temperature that is then inserted into a feedback error signal and then into a power controller which regulates the power to the thermoelectric generator to maintain a preset temperature.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: December 16, 2014
    Assignee: Linshom, L.P.
    Inventors: Doron Feldman, Jerrold Lerman, Ronen Feldman, John Moser, Uri Feldman
  • Publication number: 20140358021
    Abstract: A device and method for bioimpedance spectrography is corrected for breathing artefacts. A breathing signal is used in conjunction with the impedance signal to adjust for the time within the respiratory cycle at which the measurements are made. The correction allows the device to characterize tissue parameters accurately with fewer measurement points.
    Type: Application
    Filed: February 7, 2013
    Publication date: December 4, 2014
    Inventors: Illapha Gustav Lars Cuba Gyllensten, Alberto Giovanni Bonomi, Jarno Mikael Riistama, Jennifer Caffarel, Harald Reiter
  • Publication number: 20140343448
    Abstract: Methods, apparatuses and systems are described for determining respiration through impedance measurements using only two electrodes. A drive signal may be applied to a person, using only two electrodes. Using the same electrodes, the fluctuations in the voltage of the drive signal are determined. The voltage fluctuations in the drive signal are the result of impedance variations in the person's thoracic cavity due to respiration. Therefore, the voltage fluctuations may be used to determine a respiration rate of the person. In doing so, the voltage fluctuations may be digitized using a sampling rate that is much less than the frequency of the applied drive signal.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 20, 2014
    Applicant: Zephyr Technology Corporation
    Inventors: BRIAN KEITH RUSSELL, JONATHAN JAMES WOODWARD, AMIT KUMAR MUKHERJEE, DANIEL WAYNE BARTLETT, CHRIS SOLOMON
  • Patent number: 8888700
    Abstract: The invention provides a system for measuring respiratory rate (RR) from a patient. The system includes an impedance pneumography (IP) sensor, connected to at least two electrodes, and a processing system that receives and processes signals from the electrodes to measure an IP signal. A motion sensor (e.g. an accelerometer) measures at least one motion signal (e.g. an ACC waveform) describing movement of a portion of the patient's body to which it is attached. The processing system receives the IP and motion signals, and processes them to determine, respectfully, frequency-domain IP and motion spectra. Both spectra are then collectively processed to remove motion components from the IP spectrum and determine RR. For example, during the processing, an algorithm determines motion frequency components from the frequency-domain motion spectrum, and then using a digital filter removes these, or parameters calculated therefrom, from the IP spectrum.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: November 18, 2014
    Assignee: Sotera Wireless, Inc.
    Inventors: Matt Banet, Marshal Dhillon, Devin McCombie
  • Publication number: 20140316295
    Abstract: This invention includes improved IP sensors that both have improved sensitivity, performance, and other properties and are multifunctional. The improved IP sensors have IP sensor conductors with waveforms having legs that are substantially parallel throughout the operating range of stretch. The multifunctional IP sensors include, in addition to IP sensors, accessory conductors, additional sensors, and other compatible modules. This inventions also includes embodiments of apparel incorporating the improved IP sensors. This apparel can range from band-like to shirt-like, and so forth, and include one or more IP sensors sensitive to expansions and contractions of underlying regions of a monitored subject.
    Type: Application
    Filed: July 7, 2014
    Publication date: October 23, 2014
    Inventor: Yoav GAL
  • Publication number: 20140288455
    Abstract: A system and method is provided to measure intrathoracic complex impedance and to identify and indicate disease conditions based on the impedance measurements. Multiple impedance vectors may be taken into account, and an optimal vector may be selected to provide the most useful impedance measurement for the identification and indication of disease conditions.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Applicant: Medtronic, Inc.
    Inventors: Todd M. Zielinski, Douglas A. Hettrick, Shantanu Sarkar
  • Publication number: 20140276175
    Abstract: The invention provides a multi-sensor system that uses an algorithm based on adaptive filtering to monitor a patient's respiratory rate. The system features an impedance pneumography sensor and a motion sensor (e.g., an accelerometer) configured to attach to the patient's torso and measure therefrom a motion signal. The system further comprises a processing system, configured to operably connect to the impedance pneumography sensor and motion sensor, and to determine a respiration rate value by applying filter parameters obtained from the impedance pneumography sensor signals to the motion sensor signals.
    Type: Application
    Filed: May 31, 2014
    Publication date: September 18, 2014
    Applicant: SOTERA WIRELESS, INC.
    Inventors: Matt Banet, Marshal Dhillon, Devin McCombie
  • Patent number: 8834387
    Abstract: An airflow signal corresponding to the breathing of the patient is obtained. A section corresponding to inspiration, having a front portion and a middle portion, is found within the airflow signal. A peak value of the front portion is found, which is compared with a value representing the airflow of the middle portion. The presence of resisted breathing is determined based on the comparison between the peak value of the front portion with a value representing the airflow of the middle portion. A baseline value of the airflow signal is found by calculating the mode of values within an airflow signal representing the pressure within a patient's naris. The section corresponding to inspiration is determined by finding peak inspiration and baseline values within a breath and searching from the peak until the baseline is reached to find the section of inspiration.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: September 16, 2014
    Assignee: Sagatech Electronics Inc.
    Inventor: Ronald S. Platt
  • Publication number: 20140236037
    Abstract: The invention provides a neck-worn sensor (referred to herein as the ‘necklace’) that is a single, body-worn system that measures the following parameters from an ambulatory patient: heart rate, pulse rate, pulse oximetry, respiratory rate, temperature, thoracic fluid levels, stroke volume, cardiac output, and a parameter sensitive to blood pressure called pulse transit time. From stroke volume, a first algorithm employing a linear model can estimate the patient's pulse pressure. And from pulse pressure and pulse transit time, a second algorithm, also employing a linear algorithm, can estimate systolic blood pressure and diastolic blood pressure. Thus, the necklace can measure all five vital signs along with hemodynamic parameters. It also includes a motion-detecting accelerometer, from which it can determine motion-related parameters such as posture, degree of motion, activity level, respiratory-induced heaving of the chest, and falls.
    Type: Application
    Filed: February 19, 2014
    Publication date: August 21, 2014
    Applicant: Perminova Inc.
    Inventors: Matt Banet, Susan Pede, Marshal Dhillon, Drew Terry, Robert Hunt
  • Patent number: 8808193
    Abstract: To assess regional oxygen uptake and/or perfusion in a patient, a volume of air inhaled by the patient is determined and, according to a method of electrical impedance tomography, a first regional lung volume is measured at a first time point of a breathold procedure. The first regional lung volume is compared to a second regional lung volume at a second time point of the breathold procedure.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: August 19, 2014
    Assignee: Carefusion 207, Inc.
    Inventor: Norbert Weiler
  • Patent number: 8795189
    Abstract: A system and method for determining pulmonary performance from transthoracic impedance measures is provided. Transthoracic impedance measures collected by an implantable medical device are correlated to pulmonary functional measures. The pulmonary functional measures are grouped by respiratory pattern. Pulmonary performance is evaluated. Differences are determined by comparing the pulmonary functional measures for each respiratory pattern to the pulmonary functional measures for at least one previous respiratory pattern. A trend is identified from the differences. An alert is generated upon sufficient deviation of the trend from a threshold criteria.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: August 5, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Quan Ni, Jesse W. Hartley, Kent Lee, Jeffrey E. Stahmann
  • Patent number: 8784323
    Abstract: In specific embodiments, a method to monitor pulmonary edema of a patient, comprises (a) detecting, using an implanted posture sensor, when a posture of the patient changes from a first predetermined posture to a second predetermined posture, (b) determining an amount of time it takes an impedance signal to achieve a steady state after the posture of the patient changes from the first predetermined posture to the second predetermined posture, where the impedance signal is obtained using implanted electrodes and is indicative of left atrial pressure and/or intra-thoracic fluid volume of the patient, and (c) monitoring the pulmonary edema of the patient based on the determined amount of time it takes the impedance signal to achieve the steady state after the posture of the patient changes from the first predetermined posture to the second pre-determined posture.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: July 22, 2014
    Assignee: Pacesetter, Inc.
    Inventors: Yelena Nabutovsky, Fujian Qu, Steve Koh, Dan E. Gutfinger, Alex Soriano
  • Publication number: 20140180138
    Abstract: According to an embodiment of the present invention, a ventilation monitoring device comprises at least one processor and at least one memory including computer program code. The at least one memory and the computer program code is configured with the at least one processor to cause the ventilation monitoring device to determine whether an intubated subject's tracheal tube is properly placed by receiving an indication of a subject's breath from at least one sensor.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 26, 2014
    Inventors: Gary A. Freeman, Annemarie Silver, Guy R. Johnson
  • Patent number: 8747330
    Abstract: The invention provides a system for measuring respiratory rate (RR) from a patient. The system includes an impedance pneumography (IP) sensor, connected to at least two electrodes, and a processing system that receives and processes signals from the electrodes to measure an IP signal. A motion sensor (e.g. an accelerometer) measures at least one motion signal (e.g. an ACC waveform) describing movement of a portion of the patient's body to which it is attached. The processing system receives the IP and motion signals, and processes them to determine, respectfully, frequency-domain IP and motion spectra. Both spectra are then collectively processed to remove motion components from the IP spectrum and determine RR. For example, during the processing, an algorithm determines motion frequency components from the frequency-domain motion spectrum, and then using a digital filter removes these, or parameters calculated therefrom, from the IP spectrum.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: June 10, 2014
    Assignee: Sotera Wireless, Inc.
    Inventors: Matt Banet, Marshal Dhillon, Devin McCombie
  • Patent number: 8740807
    Abstract: The invention provides a multi-sensor system that uses an algorithm based on adaptive filtering to monitor a patient's respiratory rate. The system features an impedance pneumography sensor and a motion sensor (e.g., an accelerometer) configured to attach to the patient's torso and measure therefrom a motion signal. The system further comprises a processing system, configured to operably connect to the impedance pneumography sensor and motion sensor, and to determine a respiration rate value by applying filter parameters obtained from the impedance pneumography sensor signals to the motion sensor signals.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: June 3, 2014
    Assignee: Sotera Wireless, Inc.
    Inventors: Matt Banet, Devin McCombie, Marshal Dhillon
  • Patent number: 8720441
    Abstract: The present invention relates to a system and method for determining a patient-ventilator breath contribution index in a spontaneously breathing, mechanically ventilated patient. A patient's efficiency to generate an inspiratory volume without mechanical ventilatory assist and a patient's efficiency to generate an inspiratory volume with mechanical ventilatory assist are calculated and used to determine the patient-ventilator breath contribution index.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: May 13, 2014
    Assignee: St. Michael's Hospital
    Inventor: Christer Sinderby
  • Patent number: 8688190
    Abstract: An adherent device is configured to adhere to the skin of the patient with an adherent patch, for example breathable tape, coupled to at least four electrodes. The device comprises impedance circuitry coupled to the at least four electrodes and configured to measure respiration of the patient to detect sleep apnea and/or hypopnea. The impedance circuitry may be used to measure hydration of the patient. An accelerometer can be mechanically coupled to the adherent patch such that the accelerometer can be coupled to and move with the skin of the patient. Electrocardiogram circuitry to generate an electrocardiogram signal may be coupled to at least two of the at least four electrodes to detect the sleep apnea and/or hypopnea.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: April 1, 2014
    Assignee: Corventis, Inc.
    Inventors: Imad Libbus, Yatheendhar D. Manicka, Mark J. Bly
  • Patent number: 8668653
    Abstract: The present invention provides a garment for measuring biological information, a biological information measurement system, a biological information measurement device and a method of controlling thereof capable of measuring biological information with accuracy regardless of variations of the constitution of each examinee yet a simple structure. A resistance value sensor 21 senses variation of electric resistances of a chest respiratory information sensor 502 and a chest respiratory information sensor 504 on a shirt 500 of a biological information measuring shirt. A CPU 10 of an analysis device 100 calculates variation cycles of resistance in accordance with the resistance data and outputs respiration values based on the calculation results.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: March 11, 2014
    Assignee: Nihon Kohden Corporation
    Inventors: Shinya Nagata, Ryuji Nagai
  • Patent number: 8627821
    Abstract: Methods and devices to determine rate of particle production and the size range for the particles produced for an individual are described herein. The device (10) contains a mouthpiece (12), a filter (14), a low resistance one-way valve (16), a particle counter (20) and a computer (30). Optionally, the device also contains a gas flow meter (22). The data obtained using the device can be used to determine if a formulation for reducing particle exhalation should be administered to an individual.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: January 14, 2014
    Assignee: Pulmatrix, Inc.
    Inventors: David A. Edwards, Mark J. Gabrielson, Robert William Clarke, Wesley H. Dehaan, Matthew Frederick Brande, Jonathan Chun-Wah Man
  • Patent number: 8622922
    Abstract: The invention provides a multi-sensor system that uses an algorithm based on adaptive filtering to monitor a patient's respiratory rate. The system features a first sensor which is selected from the group consisting of an impedance pneumography sensor, an ECG sensor, and a PPG sensor; and a motion sensor (e.g., an accelerometer) configured to attach to the patient's torso and measure therefrom a motion signal. The system further comprises (iii) a processing system, configured to operably connect to the first and motion sensors, and to determine a respiration rate value by applying filter parameters obtained from the first sensor signals to the motion sensor signals.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: January 7, 2014
    Assignee: Sotera Wireless, Inc.
    Inventors: Matt Banet, Devin McCombie, Marshal Dhillon
  • Publication number: 20130289401
    Abstract: An apparatus for use in diagnosing the presence of obstructive sleep apnea (OSA) in a patient includes a sensing module structured to measure a parameter indicative of a tremor in the patient's neck, tongue and/or throat muscles while the patient is awake, the parameter not being airflow through the patient's airway. The sensing module generates one or more electrical signals based on the measured parameter. The apparatus also includes a processor operatively coupled to the sensing module, the processor being structured to receive the one or more electrical signals, perform an analysis of the one or more electrical signals, and based on the analysis determine whether the transducer tremor has a frequency in at least one predetermined frequency range that is indicative of OSA.
    Type: Application
    Filed: October 12, 2011
    Publication date: October 31, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Michael Edward Colbaugh, Ronald Dean Dean Fligge, Vijay Kumar Iyer, Douglas Mechlenburg, Edmund Arnliot Shaw, Nathan Zimmerman
  • Publication number: 20130281875
    Abstract: A method and system for determining a respiratory rate of a user are disclosed. The method comprises measuring a differential voltage across first and second electrodes of a sensor device coupled to the user. The method includes sampling the differential voltage using an analog-to-digital converter to produce an output signal. The method includes processing the output signal to detect a breath of the user based on a positive voltage transition through a midpoint, wherein the breath of the user is utilized to determine the respiratory rate of the user.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 24, 2013
    Applicant: Vigilo Networks, Inc.
    Inventors: Ravi NARASIMHAN, Nima FERDOSI
  • Patent number: 8545417
    Abstract: The invention provides a multi-sensor system that uses an algorithm based on adaptive filtering to monitor a patient's respiratory rate. The system features a first sensor which is selected from the group consisting of an impedance pneumography sensor, an ECG sensor, and a PPG sensor; and a motion sensor (e.g., an accelerometer) configured to attach to the patient's torso and measure therefrom a motion signal. The system further comprises (iii) a processing system, configured to operably connect to the first and motion sensors, and to determine a respiration rate value by applying filter parameters obtained from the first sensor signals to the motion sensor signals.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: October 1, 2013
    Assignee: Sotera Wireless, Inc.
    Inventors: Matt Banet, Devin McCombie, Marshal Dhillon
  • Patent number: 8529457
    Abstract: This invention relates to a system and a kit for stress and relaxation management. A cardiac activity sensor (101) is used for measuring the heart rate variability (HRV) signal of the user and a respiration sensor (102) for measuring the respiratory signal of the user. The system contains a user interaction device (103) having an input unit (104) for receiving user specific data and an output unit for providing information output to the user. A processor (106) is used to assess the stress level of the user by determining a user related stress index. The processor is also used to monitor the user during a relaxation exercise by means of determining a relaxation index based on the measured HRV and respiratory signals, the relaxation index being continuously adapted to the incoming measured signals and based thereon the processor instructs the output unit to provide the user with biofeedback and support messages.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: September 10, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Sandrine Magali Laure Devot, Andreas Brauers, Elke Naujokat, Robert Pinter, Harald Reiter, Jeroen Adrianus Johannes Thijs
  • Patent number: 8442627
    Abstract: An implantable medical device used for thoracic fluid monitoring by detection of changes in impedance in a patient. The device measures impedances of the patient in a supine position and in an upright position. The device determines impedance differences between the supine and upright positions which correspond to a diurnal delta value, which may in turn be employed as a diagnostic parameter.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: May 14, 2013
    Assignee: Medtronic, Inc.
    Inventor: Michael F. Hess
  • Patent number: 8423129
    Abstract: A method and apparatus for inductively measuring the bio-impedance of a user's body without complex circuitry. An apparatus is described for inductively measuring the bio-impedance of a user's body, wherein the apparatus includes a number of first inductors being adapted to induce an alternating magnetic field in the user's body and the apparatus further includes a number of second inductors being adapted to measure a secondary magnetic field in the user's body, wherein each of the number of first inductors overlaps at least one of the number of second inductors to form a number of measuring areas.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: April 16, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Eberhard Waffenschmidt, Andreas Brauers, Harald Reiter, Robert Pinter
  • Patent number: 8403848
    Abstract: An assessment of sleep quality and sleep disordered breathing is determined from the cardiopulmonary coupling between two physiological data series. In an embodiment, an R-R interval series is derived from an electrocardiogram (ECG) signal. The normal beats from the R-R interval series are extracted to produce a normal-to-normal (NN) interval series. The amplitude variations in the QRS complex are used to extract to a surrogate respiration signal (i.e., ECG-derived respiration (EDR)) that is associated with the NN interval series. The two series are corrected to remove outliers, and resampled. The cross-spectral power and coherence of the two resampled signals are calculated over a plurality of coherence windows. For each coherence window, the product of the coherence and cross-spectral power is used to calculate coherent cross power. Using the appropriate thresholds for the coherent cross power, the proportion of sleep spent in CAP, non-CAP, and wake and/or REM are determined.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: March 26, 2013
    Assignee: Beth Israel Deaconess Medical Center, Inc.
    Inventors: Joseph E. Mietus, Chung-Kang Peng, Robert Joseph Thomas, Ary L. Goldberger