Fetal Heartbeat Patents (Class 600/511)
  • Patent number: 10932683
    Abstract: A needle electrode fixation device is configured to secure a transdermal needle electrode to a patient. The device includes a base having a body that defines a first portion and a second portion. The first and second portions are rotatable relative to each other. The first portion defines a channel configured to fit a portion of the transdermal needle electrode. The second portion defines a recess configured to fit a tip of the needle electrode. The device further includes an adhesive layer configured to affix the base to the patient.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: March 2, 2021
    Assignee: MUSC Foundation for Research Development
    Inventors: Jonathan Edwards, Jessica Barley, Mark Semler
  • Patent number: 10772568
    Abstract: A method includes receiving bio-potential inputs; generating signal channels from the bio-potential inputs; pre-processing data in the signal channels; extracting R-wave peaks from the pre-processed data; removing artifacts and outliers from the R-wave peaks; generating R-wave signal channels based on the R-wave peaks in the pre-processed signal channels; selecting two or more of the R-wave signal channels; and combining the selected two or more R-wave signal channels to produce an electrical uterine monitoring signal.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: September 15, 2020
    Assignee: Nuvo Group Ltd.
    Inventor: Muhammad Mhajna
  • Patent number: 10765332
    Abstract: The invention relates to a computer-implemented medical data processing method for determining a heartbeat signal describing the heartbeat of a patient in the time domain, the method comprising executing, on a processor of a computer, steps of: a) acquiring, at the processor, acceleration measurement data describing an acceleration in the time domain of an anatomical body part measured on an external surface of the anatomical body part; b) determining, by the processor, component analysis data describing a result of an independent component analysis in the time domain of the acceleration measurement data; c) acquiring, at the processor, heartbeat template data describing template shapes of heartbeat in the time domain; d) determining, by the processor and based on the component analysis data and the heartbeat template data, recurrent shape data describing a recurrence of certain signal shapes in the component analysis data; e) determining, based on the recurrent shape data, heartbeat signal data describing a
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: September 8, 2020
    Assignee: BRAINLAB AG
    Inventors: Christian Harrer, Stephan Mittermeyer, Bálint Varkuti
  • Patent number: 10675178
    Abstract: A system and method of monitoring, controlling and/or detecting events during the removal of heat from subcutaneous lipid-rich tissue is described. In some examples, the system detects an increase in temperature at a treatment device in contact with the skin of a subject, determines that the increase in temperature is related to a treatment event, and performs an action based on the determination. In some examples, the system shuts off the treatment device, alerts an operator, or reduces the cooling in response to a determined treatment event.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: June 9, 2020
    Assignee: Zeltiq Aesthetics, Inc.
    Inventors: Mitchell E. Levinson, Jesse Nicasio Rosen, Corydon A. Hinton, Kevin S. Springer
  • Patent number: 10531801
    Abstract: System (10) for extracting a fetal heart rate from at least one maternal signal using a computer processor (26). The system includes sensors (12-18) attached to a patient to receive abdominal ECG signals and a recorder and digitizer (20) to record and digitize each at least one maternal signal in a maternal signal buffer (22A-22D). The system further includes a peak detector (40) to identify candidate peaks in the maternal signal buffer. The signal stacker (42) of the system stacks the divides at least one maternal signal buffer into a plurality of snippets, each snippet including one candidate peak and a spatial filter (44) to identify and attenuate a maternal QRS signal in the plurality of snippets of the maternal signal buffer, the spatial filter including at least one of principal component analysis and orthogonal projection, to produce a raw fetal ECG signal which is stored in a raw fetal ECG buffer.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: January 14, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Limei Cheng, Eric Thomas Carlson, Srinivasan Vairavan, Minnan Xu
  • Patent number: 10499844
    Abstract: A system for monitoring health parameters of a user includes a housing including: a plurality of sensors disposed on an outer surface of the housing or within the housing for measuring a plurality of parameters of interest; a processor disposed in the housing and communicatively coupled to the plurality of sensors; a coupling element on the housing for coupling the housing to an accessory; and an accessory identifier positioned on or within the housing and communicatively coupled to the processor. In some embodiments, the housing is reversibly transitionable between an uncoupled state and a coupled state with the accessory. In the coupled state, the accessory identifier senses a type of accessory and the processor activates a subset of the plurality of sensors to measure a subset of the plurality of parameters of interest. In some embodiments, the user is a pregnant female and a fetus developing in the pregnant female.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: December 10, 2019
    Assignee: Bloom Technologies NV
    Inventors: Julien Penders, Eric Dy
  • Patent number: 10376243
    Abstract: A method for ultrasound based heart rate detection in a heart rate monitoring system is provided that includes receiving a demodulated Doppler ultrasound signal, applying a bandpass filter to the demodulated Doppler ultrasound signal to remove a direct current (DC) component and out-of-band noise, wherein a filtered demodulated Doppler ultrasound signal is generated, rectifying the filtered demodulated Doppler ultrasound signal to generate a rectified filtered demodulated Doppler ultrasound signal, applying a low-pass filter to the rectified filtered demodulated Doppler ultrasound signal to filter out undesired components to leave a resulting signal corresponding to power shift due to heart rate, detecting peaks in the resulting signal, and computing a heart rate based on the detected peaks.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: August 13, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Sourabh Ravindran, Jonathon David Spaulding
  • Patent number: 10278604
    Abstract: A fetal state estimation apparatus estimates a state of a fetus in a maternal body based on a potential signal indicating a change in potential on a surface of the maternal body. The fetal state estimation apparatus is configured to include a rotation angle estimation unit which estimates a rotation angle of the fetus with respect to the maternal body at every beating of a heart of the fetus based on the potential signal and a fetal movement estimation unit which estimates a fetal movement which is a movement of the fetus based on the potential signal and the estimated rotation angle.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: May 7, 2019
    Assignee: TOHOKU UNIVERSITY
    Inventors: Yoshitaka Kimura, Naoaki Sato, Nobuo Yaegashi, Takuya Ito, Miyuki Endo, Sayaka Oshio, Hidekazu Nishigori, Yuji Nabeshima, Mitsuyuki Nakao
  • Patent number: 10269265
    Abstract: A method and apparatus to simulate intrauterine contractions to train clinicians in using a tocodynamometer (TOCO) transducer. The apparatus includes an enclosure housing an air bladder, with an opening in the enclosure for a TOCO transducer to be placed in contact with the air bladder. The air bladder is selectively pressurized by a source of compressed gas, the flow being controlled by a flow valve. A pressure release valve is provided to reduce pressure in the bladder. A pressure sensor monitors the bladder pressure, and can be used to calibrate the system to determine what bladder pressure produced a given uterine activity. The flow valve may be controlled by a software run on a processor to achieve particular uterine activity levels over a given period of time.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: April 23, 2019
    Assignee: Dynasthetics, LLC
    Inventor: Joseph Orr
  • Patent number: 10004419
    Abstract: An electrode device for measuring a living body is herein disclosed. The electrode device for measuring a living body signal includes a body comprising a handle part and a tongs part, the body elastically moving by an external force, an electrode part comprising needles disposed on inner surfaces of the tongs part to face each other, and a wire part connected to one end of the electrode part for a connection with a measuring device.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: June 26, 2018
    Assignee: InBody Co., Ltd.
    Inventors: Ki Chul Cha, Chang Su Ji
  • Patent number: 9968291
    Abstract: An apparatus and method for detecting uterine activity uses cutaneous electrodes on the maternal abdomen to obtain electrophysiological signals that can be used to obtain fetal and maternal heart rate. The apparatus includes a first input for receiving electrical signals from the cutaneous electrodes and a second input for receiving movement signals indicative of a movement of the maternal body from a movement detector. A signal processor separates a uterine electromyogram signal from fetal and maternal heart rate signals and filters out motion artifacts from the electromyogram using the movement signals. An output presents electrohysterogram (EHG) data from the uterine electromyogram signal.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: May 15, 2018
    Assignee: MONICA HEALTHCARE LIMITED
    Inventors: Barrie Robert Hayes-Gill, Jean-Francois Pieri
  • Patent number: 9955890
    Abstract: A system automatically detects and measures ST deviation of a heart wave ECG signal in the presence of noise and accommodates baseline variation of the signal and other artifacts. A system identifies a particular point in an electrophysiological signal representing heart electrical activity using an interface for receiving an electrical signal waveform comprising an R-wave and including an ST segment portion associated with heart electrical activity of a patient over a heart beat cycle. A signal processor processes data representing the electrical signal waveform by identifying an S point and T point in the electrical signal waveform and determining a first candidate J point in the electrical signal waveform having substantially a maximum distance from a line between the identified S and T points, the distance being measured perpendicularly to the line.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: May 1, 2018
    Assignee: Siemens Healthcare GmbH
    Inventors: Vijaya Sarathi Indla, Preetham Nagaraja Murthy
  • Patent number: 9895071
    Abstract: Self-correlation enhancements and implementations are described. In particular, certain examples demonstrate the use of a tracking mechanism to identify and/or confirm cardiac rate using data from iterative self-correlation performed at intervals over time. This may enable the interpolation of cardiac rate in an implantable medical device when data is insufficient, and may provide confidence in cardiac rate analyses.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 20, 2018
    Assignee: CAMERON HEALTH, INC.
    Inventor: Krzysztof Z. Siejko
  • Patent number: 9813078
    Abstract: The present disclosure relates generally to automating the task of assignment of labels to identify electrical elements (e.g., electrode contacts, electrodes including a plurality of electrode contacts, and/or non-addressable electrical elements, like wires). A system that can automate the task of assignment of labels can include an electrical element, a microelectronic circuit associated with the electrical element, and an acquisition system. The microelectronic circuit can transmit a sequence comprising a label corresponding to the electrical element. The acquisition system can assign the label corresponding to the electrical element to a recording channel after decoding the sequence.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: November 7, 2017
    Assignee: The Cleveland Clinic Foundation
    Inventors: John T. Gale, Jorge Gonzalez-Martinez, Imad Najm
  • Patent number: 9805164
    Abstract: A system and apparatus for implementing a user interface for displaying uterine contraction information is provided. The graphical user interface displays first information conveying a rate of uterine contractions, the first information being derived at least in part on the basis of at least a portion of a contraction signal. The graphical user interface also displays, concurrently with the first information, second information conveying a threshold rate of uterine contractions. In specific examples of implementation, the graphical user interface is adapted for selectively causing an alarm event based at least in part on a rate of uterine contractions conveyed by the first information and the threshold rate of uterine contractions.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: October 31, 2017
    Assignee: PERIGEN, INC.
    Inventor: Emily Hamilton
  • Patent number: 9763616
    Abstract: The disclosed apparatus, systems and methods relate to tracking abdominal orientation and activity for purposes of preventing or treating conditions of pregnancy or other types of medical conditions. In certain specific embodiments, the system, device, or method relates to identifying abdominal orientation risk values, calculating and updating a cumulative risk value, comparing the cumulative risk value to a threshold, and outputting a warning when the cumulative risk value crosses the threshold.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: September 19, 2017
    Assignee: Smart Human Dynamics, Inc.
    Inventor: Stephen Dugan
  • Patent number: 9760540
    Abstract: A method implemented through an electronic system for processing a sequential data to identify possible peak points is disclosed. The method defines a decayed threshold function and partition the sequential data into a plurality of segments by grouping each data point with surrounding data points into one of the segments. After that, a plurality of weighted segments are derived through weighting the surrounding data points by the decayed threshold function in each of the segments, and the peak points are identified through corresponding weighted segment.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: September 12, 2017
    Assignee: National Central University
    Inventors: Yi-Chung Chang, Men-Tzung Lo
  • Patent number: 9730851
    Abstract: A surgical table extension comprises a frame and a connector. The frame includes a surgical table connecting portion, a first connector, and a second connector. The connector enabler is movably coupled to the frame and is configured to selectively enable one of the first connector and the second connector to be removably coupled with a support device.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 15, 2017
    Assignee: Allen Medical Systems, Inc.
    Inventors: Andrew D. Clark, Anthony V. Catacchio, Jesse S. Drake, Dustin T. Libby
  • Patent number: 9636081
    Abstract: A method of recognizing at least one moving anatomical structure using ultrasound data that operates by receiving ultrasound data (100). The ultrasound data comprises Doppler shift information which provides information descriptive of the velocity of at least one anatomical structure. The ultrasound data is first divided into a series of time frames (102). A classification is then assigned to each of the time frames using the Doppler shift information (104). The at least one anatomical structure is then recognized by using the classification of each time frame (106). This is possible, because different anatomical structures produce different patterns in the Doppler shift information.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: May 2, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Stefan Reuter, Alexander Dubielczyk, Markus Wohlschlager
  • Patent number: 9622723
    Abstract: An ultrasonic sensor according to the invention comprises at least one ultrasonic transducer, at least one resistor connected to the ultrasonic transducer and a housing accommodating the ultrasonic transducer and the resistor. The ultrasonic sensor is configured in such a way, that it is not or only slightly ferromagnetic, so that the ultrasonic sensor acts neutrally with respect to an external magnetic field (for example in an MRT).
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: April 18, 2017
    Inventors: Ulrike Wedegaertner, Klaus Valett, Jin Yamamura
  • Patent number: 9597001
    Abstract: This invention provides a fully automatic method and a system for detecting and classifying cardiac arrhythmias from a surface ECG record. The method defines four relevant parameters whose values are extracted from said ECG record. Clinically relevant conclusions are assigned to various combinations of the obtained values of said parameters. The method can be employed for detecting fetal QRS complexes from abdomen ECG of a pregnant woman.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: March 21, 2017
    Assignee: Ben-Gurion University of the Negev Research & Development Authority
    Inventors: Yaniv Zigel, Amos Katz, Or Perlman, Nahum Noam Weisman
  • Patent number: 9585614
    Abstract: The various embodiments herein relate to systems, devices, and methods for tracking abdominal orientation and activity for purposes of preventing or treating conditions of pregnancy or other types of medical conditions. In certain specific embodiments, the system, device, or method relates to identifying abdominal orientation risk values, calculating and updating a cumulative risk value, comparing the cumulative risk value to a threshold, and outputting a warning when the cumulative risk value crosses the threshold.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: March 7, 2017
    Assignee: Smart Human Dynamics, Inc.
    Inventor: Stephen Dugan
  • Patent number: 9451892
    Abstract: Self-correlation enhancements and implementations are described. In particular, certain examples demonstrate the use of a tracking mechanism to identify and/or confirm cardiac rate using data from iterative self-correlation performed at intervals over time. This may enable the interpolation of cardiac rate in an implantable medical device when data is insufficient, and may provide confidence in cardiac rate analyzes.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: September 27, 2016
    Assignee: CAMERON HEALTH, INC.
    Inventor: Krzysztof Z. Siejko
  • Patent number: 9439604
    Abstract: Systems, methods, and computer-readable media are provided for displaying on a user display device alarm-triggering events detected by the medical device based on the location of the user display device. The method comprises receiving alarm-triggering patient data from a medical device and determining the physical location of first and second user display devices. The method further comprises determining that the physical location of the first user display device is designated to have an alarm displayed, and that the physical location of the second user display device is not designated to have an alarm displayed. In response to these determinations, the content of the alarm is displayed on the first user display device.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: September 13, 2016
    Assignee: Cerner Innovation, Inc.
    Inventors: Christopher J. Heil, Jeremy A. Flores, Carol A. M. George
  • Patent number: 9364197
    Abstract: A device and method for improving the identification accuracy of fetal heart rate deceleration. The method includes: collecting fetal heart rate data (101); performing baseline identification on the collected fetal heart rate data (102); preprocessing the collected fetal heart rate data (103); performing deceleration identification on the preprocessed fetal heart rate data according to preset deceleration judgment standards and a fetal heart rate data baseline to obtain a decelerated data segment (104); and calculating a deceleration attribute value of each decelerated data segment (105), and outputting the decelerated data segment and calculation result (106).
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: June 14, 2016
    Assignee: EDAN INSTRUMENTS, INC
    Inventors: Jian Rao, Wusun Chen, Yonghua Zeng, Dewei Chen
  • Patent number: 9333349
    Abstract: Disclosed is a bio-feedback type device for physical pain relief at childbirth, comprising a maternal-fetal monitoring module, a hand-grip pressure transducer, an electrical-stimulation wave group generator, an electrical-stimulation wave group output module and a childbirth pain-relief workstation.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: May 10, 2016
    Assignee: Guangzhou Sunray Medical Apparatus Co., Ltd.
    Inventors: Yaosheng Lu, Jianguo Qi, Kun Fang, Ruyi Qin, Zhan Lin, Jingbo Rong, Haifeng Chen
  • Patent number: 9247911
    Abstract: Apparatuses and methods (including methods of using such apparatuses) for de-noising electrocardiograms (ECGs) by manually or automatically adjusting the amount of filtering of an ECG signal. For example, real-time ECG signals may be filtered by combining in a weighted fashion an unfiltered portion of an ECG (or a filtered portion of the same ECG) with the same portion of the ECG that has been filtered. The weighting may be adjusted manually and/or automatically. Also described herein are methods for real-time filtering of ECG signals using a combination of filtering techniques including filtering to correct baseline wander, Savitzky-Golay denoising, and threshold smoothing. Multiple filtering techniques may be combined in a weighed manner to provide signal de-noising.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: February 2, 2016
    Assignee: ALIVECOR, INC.
    Inventors: Conner Daniel Cross Galloway, Alexander Vainius Valys, Nicholas Peter Hughes, David E. Albert
  • Patent number: 9232929
    Abstract: A method and device for monitoring a fetal heart rate includes a reference fetal heart rate detected across an ultrasound depth zone of sensitivity. The ultrasound depth zone of sensitivity is scanned in overlapping increments of a first depth. An average fetal heart rate detected for each overlapping increment is tested for a coincidence with the reference fetal heart rate. Overlapping increments with the coincidence and a maximized signal quality rate are identified. An ultrasound depth increment of a second depth is selected representing the selected adjacent increments. Fetal heart rate is determined from an ultrasound signal returned from a scan depth of the second depth.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 12, 2016
    Assignee: General Electric Company
    Inventors: Serguei Kabakov, Steven M. Falk
  • Patent number: 9232901
    Abstract: An apparatus and method for automatically identifying FHR baseline includes collecting FHR data within a preset duration to obtain an FHR data sequence h?(n); preprocessing the collected FHR data sequence h?(n) to obtain a corresponding FHR data sequence during the preprocessing; selecting a primary dominant peak value according to the frequency distribution of the corresponding FHR data sequence during the preprocessing; and identifying a dynamic baseline according to the corresponding FHR data sequence and the primary dominant peak value during the preprocessing to obtain the dynamic baseline, and display and print the dynamic baseline. The apparatus and method effectively prevents the impact caused by regular change of the FHR to the baseline solution, and accurately reflects the FHR baseline and changes thereof of a fetus under different conditions.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: January 12, 2016
    Assignee: EDAN INSTRUMENTS, INC.
    Inventors: Jian Rao, Yonghua Zeng, Dewei Chen, Wusun Chen
  • Patent number: 9131860
    Abstract: A method for identifying the level of fetal risk during labor comprises monitoring at least each of the concurrent clinical parameters of (a) FHR, (b) baseline FHR variability, (c) FHR accelerations, (d) FHR decelerations, and (e) maternal uterine activity, to determine whether each parameter independently exhibits at least one non-reassuring characteristic, and indicating a present level of risk to the fetus corresponding to the number of the concurrent clinical parameters (a) through (e) that are simultaneously, independently non-reassuring. An apparatus for implementing the method comprises at least one computer operative to receive input signals indicative of at least FHR and maternal uterine activity in a patient.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: September 15, 2015
    Inventor: Mark Evans
  • Patent number: 9125577
    Abstract: A method for processing cardiac signals includes accepting, from a sensor system, a set of one or more signals, the signals including components of a desired cardiac signal and components of a substantially periodic interfering signal. The method is applicable for extraction of desired fetal cardiac signals from signals with interference from the maternal cardiac signal. A periodicity of the interfering signal is determined, and one or more iterations of mitigating an effect of a component of the signals that exhibit periodicity at the determined periodicity of the interfering signal are performed. In some examples, the method further includes determining a periodicity of the desired cardiac signal, and performing one or more iterations of enhancing an effect of a component of the signals that exhibit periodicity at the determined periodicity of the desired cardiac signal.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: September 8, 2015
    Assignees: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, INSTITUT POLYTECHNIQUE DE GRENOBLE, UNIVERSITE JOSEPH FOURRIER
    Inventors: Reza Sameni, Christian Jutten, Mohammad B. Shamsollahi, Gari D. Clifford
  • Patent number: 9026199
    Abstract: Apparatus and methods are described, included a method for detecting uterine contractions in a pregnant woman. The method includes sensing motion of the woman without contacting the woman, generating a signal corresponding to the sensed motion, and analyzing the signal to detect presence of labor contractions. Other applications are also described.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 5, 2015
    Assignee: Earlysense Ltd.
    Inventors: Avner Halperin, Arkadi Averboukh, Yosef Gross
  • Patent number: 9002441
    Abstract: Systems, methods, and computer-readable media for managing healthcare environments are provided. In embodiments, a first waveform tracing for data received from one or more medical devices for a first individual is displayed. A second waveform tracing for data received from one or more medical devices for a second individual is displayed. In response to the determination to hide the first waveform tracing, only displaying the second waveform tracing.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: April 7, 2015
    Assignee: Cerner Innovation, Inc.
    Inventors: Christopher Heil, Jeremy Flores, Carol George
  • Publication number: 20140378855
    Abstract: Provided are an apparatus and method for receiving a fetal heart rate (FHR) signal at each interval during a monitoring period, receiving a uterine pressure (UP) signal at each of the intervals to obtain a plurality of FHR-UP signal pairs, and extracting a feature value for each FHR-UP signal pair, with the feature value being extracted from a predefined alphabet of feature values.
    Type: Application
    Filed: June 25, 2014
    Publication date: December 25, 2014
    Inventors: Shishir DASH, J. Gerald QUIRK, Petar DJURIC
  • Publication number: 20140350421
    Abstract: A method for processing cardiac signals includes accepting, from a sensor system, a set of one or more signals, the signals including components of a desired cardiac signal and components of a substantially periodic interfering signal. The method is applicable for extraction of desired fetal cardiac signals from signals with interference from the maternal cardiac signal. A periodicity of the interfering signal is determined, and one or more iterations of mitigating an effect of a component of the signals that exhibit periodicity at the determined periodicity of the interfering signal are performed. In some examples, the method further includes determining a periodicity of the desired cardiac signal, and performing one or more iterations of enhancing an effect of a component of the signals that exhibit periodicity at the determined periodicity of the desired cardiac signal.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Inventors: Reza Sameni, Christian Jutten, Mohammad B. Shamsollahi, Gari D. Clifford
  • Patent number: 8897862
    Abstract: A non-transitory computer-readable recording medium storing a computer program, the computer program comprising: a selecting module configured to select, from among a plurality of biopotential signals, a biopotential signal containing a high proportion of a maternal cardiac potential signal component; an independent component analysis module configured to perform independent component analysis on the plurality of biopotential signals; a periodic signal detection module configured to detect, as a first peak time signal, a signal having periodic peaks from a biopotential signal and to detect, as second peak time signals, one or more signals having periodic peaks among signals output from the independent component analysis module; and an output signal selecting module configured to select from among the one or more second peak time signals a signal having peak times different from those of the first peak time signal.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: November 25, 2014
    Assignees: Public University Corporation Nara Medical University, Kinki University
    Inventors: Hiroshi Kobayashi, Toshiyuki Sado, Hisashi Yoshida
  • Patent number: 8892181
    Abstract: A non-invasive fetal monitoring system includes a plurality of contact elements, each of the contact elements comprising a plurality of electrodes configured in a unique pattern. The plurality of contact elements are configured for attachment to an external skin surface of a pregnant female for detecting fetal and/or maternal electrical activity.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: November 18, 2014
    Assignee: MindChild Medical, Inc.
    Inventors: Adam J. Wolfberg, Jay Ward, James K. Robertson
  • Patent number: 8880140
    Abstract: The invention relates to large area electrodes suitable for use in a fetal heart rate monitoring systems. The electrode comprises: a cutaneous gel contact (10) for sensing fetal electrocardiogram signals from a human pregnant subject; an electrical conductor (12) electrically connected to the gel contact (10) so as to define a first electrical contact region; a connector (14) in electrical contact with the electrical conductor (12) for connection to a lead wire; and a substructure (16) for attachment to a human pregnant subject. The gel contact (10) and the electrical conductor (12) are arranged on the substructure (16) to allow a contact surface (11) of the gel contact (10) to be in electrical communication with the skin of a human pregnant subject to define a second electrical contact region. The second electrical contact region has an area greater than 370 square millimeters.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: November 4, 2014
    Assignee: Minoca Healthcare Limited
    Inventors: Barrie Robert Hayes-Gill, Carl William Barratt, Jean-Francois Pieri
  • Patent number: 8868164
    Abstract: A fetal monitoring device includes a piezofilm sheet, a first electrode, and a second electrode. A controller is operably connected to the piezofilm sheet, first electrode, and second electrode and receives a biopotential and a piezofilm signal. The controller derives at least one of a maternal heart rate and a uterine activity for the biopotential and derives at least one of a fetal heart rate and fetal motion detection from the piezofilm signal. The controller derives an index of fetal health and operate an indicator to present the derived index of fetal health.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: October 21, 2014
    Assignee: General Electric Company
    Inventors: Serguei Kabakov, Steven M. Falk, Bradley C. Fox
  • Patent number: 8849383
    Abstract: An active medical device using non-linear filtering for the reconstruction of a surface electrocardiogram (ECG) from an endocardial electrogram (EGM) is disclosed. The device for the reconstruction of the surface ECG comprises: a plurality of inputs, receiving a corresponding plurality of EGM signals from endocardial or epicardial electrogram (x1[n], x2[n]), each collected on a respective EGM derivation of a plurality of EGM derivations, and at least one output delivering a reconstructed surface ECG electrocardiogram signal (y[n]), related to an ECG derivation, and a non-linear digital filter (12?, 12?, 14) with a transfer function that determines the reconstructed ECG signal based on said plurality of input EGM signals. The non-linear digital filter includes a Volterra filter type (12, 12?, 12?) whose transfer function includes a linear term (h1) and at least one quadratic (h2) and/or cubic (h3) term(s).
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: September 30, 2014
    Assignee: Sorin CRM S.A.S.
    Inventor: Alaa Makdissi
  • Patent number: 8838221
    Abstract: A system and method of documentation and categorization of medical obstetrics data, such as fetal heart rate characteristics. The automatic categorization of fetal heart rate characteristics into three categories, Category I—strongly predictive of normal fetal acid-base balance, Category II—not predictive of abnormal fetal acid-base balance and Category III—predictive of abnormal fetal acid-base balance.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: September 16, 2014
    Assignee: Clinical Computer Systems Incorporated
    Inventors: Gina Brody, Caren Busen, Ning Li, Randall Paul, Anne Urmanski
  • Patent number: 8805485
    Abstract: A method for processing cardiac signals includes accepting, from a sensor system, a set of one or more signals, the signals including components of a desired cardiac signal and components of a substantially periodic interfering signal. The method is applicable for extraction of desired fetal cardiac signals from signals with interference from the maternal cardiac signal. A periodicity of the interfering signal is determined, and one or more iterations of mitigating an effect of a component of the signals that exhibit periodicity at the determined periodicity of the interfering signal are performed. In some examples, the method further includes determining a periodicity of the desired cardiac signal, and performing one or more iterations of enhancing an effect of a component of the signals that exhibit periodicity at the determined periodicity of the desired cardiac signal.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: August 12, 2014
    Assignees: Massachusetts Institute of Technology, Institut Polytechnique de Grenoble, Universite Joseph Fourrier
    Inventors: Reza Sameni, Christian Jutten, Mohammad B. Shamsollahi, Gari D. Clifford
  • Patent number: 8694081
    Abstract: A system and associated method include an AECG/PCG sensor configured to generate an AECG/PCG signal in response to a monitored fetal heart. The system also includes an US transducer configured to generate an US signal in response to the monitored fetal heart. The system also includes a computer configured to assess the quality of the AECG/PCG signal, and compare the assessed quality of the AECG/PCG signal with a selectable threshold value. The computer is also configured to disable the US transducer and process the AECG/PCG signal to provide a fetal heart rate estimate as long as the assessed quality of the AEC/PCG signal exceeds the selectable threshold value. The computer is also configured to enable the US transducer and process the US signal to provide a fetal heart rate estimate only if the assessed quality of the AEC/PCG signal is equal to or less than the selectable threshold value.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: April 8, 2014
    Assignee: General Electric Company
    Inventor: Serguei Kabakov
  • Patent number: 8694086
    Abstract: An apparatus for non-invasively measuring an electrocardiogram (ECG) in a conscious ambulatory subject includes an electrically conductive platform. The electrically conductive platform establishes an electrical connection with the subject at one of a position forward (e.g., rostral to) or a position rearward (e.g., caudal to) the heart. An additional electrical connection is established at the other of a position forward (e.g., rostral to) or a position rearward (e.g., caudal to) on the subject. The position rearward to (e.g., caudal to) the heart can be the tail of the subject. The additional electrical connection can be established by a movable electrode, an electrically conductive ringlet, an additional electrically conductive platform, a region of conductive material, an electrically conductive dome, a food element, or one or more electrically conductive posts.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: April 8, 2014
    Assignee: Mouse Specifics, Inc.
    Inventor: Thomas G. Hampton
  • Publication number: 20140066796
    Abstract: The disclosure provides a system that displays an indicator of patient posture state that changes according to posture state data. The posture state data may be transmitted from a medical device, for example, in or near real-time. In some examples, the disclosure relates to a method comprising receiving posture state data for a patient from a medical device; and presenting an indicator indicative of two or more of posture states based on the received posture state data, wherein each posture state of the two or more posture states is determined based on different detection criteria.
    Type: Application
    Filed: November 11, 2013
    Publication date: March 6, 2014
    Applicant: Medtronic, Inc.
    Inventors: Jon P. Davis, Duane L. Bourget, Mandla Shongwe, Rajeev M. Sahasrabudhe
  • Patent number: 8666481
    Abstract: A monitoring system includes a physiologic monitoring device (102) with an accelerometer (202) that senses fetal movements of a fetus in the womb of a human or animal patient and generates signals indicative thereof, a signal identifier (108) that identifies signals from the generated signals that correspond to a predetermined fetal movement, and a counter (112) that counts the identified signal.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: March 4, 2014
    Assignee: Analogic Corporation
    Inventors: Lewis Norman Harrold, Anthony Ralph Diciaccio
  • Patent number: 8652063
    Abstract: Equipment (10) for non-invasively measuring a physiological process includes at least one receiver (12) to be placed relative to a body of a subject being examined to detect at least one signal from the body of the subject. A discrimination unit (20.1) determines if the at least one signal is a signal of interest associated with the physiological process. A processor (20) processes the signal of interest to enhance the signal of interest and suppresses other received signals that are not of interest.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: February 18, 2014
    Assignee: Heard Systems Pty Ltd
    Inventors: Gaetano Gargiulo, Jonathan Craig Tapson, Richard William Shephard
  • Publication number: 20140031707
    Abstract: An apparatus and method for automatically identifying FHR baseline includes collecting FHR data within a preset duration to obtain an FHR data sequence h?(n); preprocessing the collected FHR data sequence h?(n) to obtain a corresponding FHR data sequence during the preprocessing; selecting a primary dominant peak value according to the frequency distribution of the corresponding FHR data sequence during the preprocessing; and identifying a dynamic baseline according to the corresponding FHR data sequence and the primary dominant peak value during the preprocessing to obtain the dynamic baseline, and display and print the dynamic baseline. The apparatus and method effectively prevents the impact caused by regular change of the FHR to the baseline solution, and accurately reflects the FHR baseline and changes thereof of a fetus under different conditions.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 30, 2014
    Applicant: EDAN INSTRUMENTS, INC.
    Inventors: Jian Rao, Yonghua Zeng, Dewei Chen, Wusun Chen
  • Patent number: 8603010
    Abstract: Apparatus and methods are provided for measuring a heartbeat of a fetus in a pregnant subject. A motion-related parameter of the pregnant subject is sensed without contacting or viewing the subject or clothes the subject is wearing. The fetal heartbeat is derived from the motion-related parameter, and an output is generated in response thereto. Other applications are also described.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: December 10, 2013
    Assignee: EarlySense Ltd.
    Inventors: Daniel H. Lange, Avner Halperin, Itzhak Pinhas, Yossi Gross
  • Patent number: 8600473
    Abstract: An electrode assembly comprising a fetal electrode (1) that is connected to a drive tube (31) by a torque limiting connection (30). The connection allows the drive tube to separate from the electrode hub once a predetermined torque has been reached. The electrode hub is also provided with a deflection surface (9) that deflects the drive tube away from the fetal electrode into the hand of the operator, as rotation of the drive tube continues beyond the point of disconnection. Features are also provided to make the fetal electrode more compact and to optimise the fECG signal recorded on the electrode wires (5, 9).
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: December 3, 2013
    Assignee: Neoventa Medical AB
    Inventor: Anders Lars Gingsjo