Signal Display Or Recording Patents (Class 600/523)
  • Publication number: 20120197150
    Abstract: An external physiological monitor continuously senses and monitors cardiac function of a patient to allow detection of cardiac events and the recording of data and signals pre- and post-event. The monitor is connected to and suspended on the patient's body solely by the electrode assembly. Stored diagnostic data may be uplinked and evaluated by the patient's physician utilizing a programmer via a two-way telemetry link. An external patient activator may optionally allow the patient, or other care provider to manually activate the recording of diagnostic data.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 2, 2012
    Applicant: Medtronic, Inc.
    Inventors: Jian Cao, Christine Gale Kronich, David M. Fuss, Rebecca K. Gottlieb, Jeffrey L. Kehn, Paul Gordon Krause, Brian B. Lee, George Patras
  • Publication number: 20120197151
    Abstract: A patient management system is described that includes an implantable device for collecting one or more physiological parameter values and associated timestamps indicating the time at which the value is collected. The system is then configured to determine the periodic variation, if any, of a particular physiological parameter and use that periodicity in assessing changes in the parameter values over time.
    Type: Application
    Filed: April 2, 2012
    Publication date: August 2, 2012
    Inventors: Kelly Schatz, Robert J. Sweeney
  • Publication number: 20120190995
    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: Application
    Filed: January 26, 2012
    Publication date: July 26, 2012
    Inventor: Thomas G. Hampton
  • Publication number: 20120190947
    Abstract: Systems and methods that enable physiological monitoring with a mobile communication device and that allow detection of motion artifacts so that the results reported are of acceptable quality are disclosed.
    Type: Application
    Filed: January 20, 2012
    Publication date: July 26, 2012
    Inventors: Ki H. Chon, Jinseok Lee, Nandakumar Selvaraj
  • Patent number: 8229551
    Abstract: A system and method of presenting physiological data in a component ring. The method includes receiving a plurality of leads of physiological data. Morphology features are extracted from the plurality of leads. The morphology features are graphed by presenting a component ring associated with each of the morphology features. The system includes at least two sensors configured to collect physiological data. A processor is configured to extract amplitudes of morphology features. A graphical user interface is configured to graphically display the morphology features in a plurality of component rings.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: July 24, 2012
    Assignee: General Electric Company
    Inventor: Joel Q. Xue
  • Patent number: 8224432
    Abstract: An electrophysiology (EP) system includes an interface for operator-interaction with the results of code executing therein. A template model can have channels positioned or repositioned thereupon by the user to define a set-up useful in rapid catheter positioning. Mapping operations can be performed without the requirement for precise catheter location determinations. A map module coordinates EP data associated with each selected channel and its associated position on the template model to provide this result, and can update the resulting map in the event that the channel or location is changed. Messaging and other dynamic features enable synchronized presentation of a myriad of EP data. Additional systems and methods are disclosed herein.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: July 17, 2012
    Assignee: C.R.Bard, Inc.
    Inventors: David P. MacAdam, Minoru Mashimo, Pawel Kuklik, Bruce Stoller
  • Publication number: 20120179060
    Abstract: An ECG data acquisition device is provided, including a main housing, at least two electrodes, an ECG signal acquisition circuitry having a processor and a memory for storing acquired data, a connector for communication, and a movable housing, covering the connector and having at least an electrode mounted thereon, wherein as executing the ECG signal acquisition, the movable housing is in a first state, and as communicating with an external equipment, the movable housing is moved to a second state for exposing the connector and electrically disconnecting the electrode thereon from the ECG signal acquisition circuitry.
    Type: Application
    Filed: September 17, 2010
    Publication date: July 12, 2012
    Inventor: Chang-An Chou
  • Publication number: 20120179059
    Abstract: A system, method, and memory medium for operating on an electrocardiogram (ECG) signal. A multiscale short-time Fourier transform (STFT) is perform on a set of ECG samples {s(n)} to obtain a transform array. For each sufficiently energetic peak in the transform array, a refined window width value and a refined window displacement value is generated by: computing an inner product between the set of samples and each of a plurality of functions, where the plurality of functions are sufficiently close to a coarse approximation function given by the peak location; and solving a linear system Av=c for the unknown vector v, where the vector c is determined by the inner products, where the matrix A is determined by the center times of the plurality of functions. After appropriate selection, the refined window width and refined window displacement may be used to represent ECG waveform features.
    Type: Application
    Filed: March 23, 2012
    Publication date: July 12, 2012
    Inventors: Zhijun Gu, Nanxiong Zhang, Shie Qian
  • Publication number: 20120179058
    Abstract: Physiological data is generated from signals received from one or more leads associated with the IMD. The physiological data is sampled to generate a plurality of data samples. A predictive encoding algorithm is applied to the plurality of data samples to generate a plurality of encoded data samples each corresponding to one of the plurality of data samples. An entropy encoding algorithm is then applied to the plurality of encoded data samples to generate a plurality of code words each corresponding to one of the plurality of encoded data samples. The code words are then stored in a memory in the IMD.
    Type: Application
    Filed: March 20, 2012
    Publication date: July 12, 2012
    Inventors: Zhe SHEN, Joseph E. BANGE, Allan T. KOSHIOL
  • Publication number: 20120172689
    Abstract: A personal monitoring device has a sensor assembly configured to sense physiological signals upon contact with a user's skin. The sensor assembly produces electrical signals representing the sensed physiological signals. A converter assembly, integrated with, and electrically connected to the sensor assembly, converts the electrical signals generated by the sensor assembly to a frequency modulated inaudible ultrasonic sound signal. The ultrasonic signal is demodulated from an aliased signal produced by undersampling.
    Type: Application
    Filed: March 14, 2012
    Publication date: July 5, 2012
    Inventors: David Albert, Bruce Richard Satchwell, Kim Norman Barnett
  • Publication number: 20120172738
    Abstract: The present invention relates to an apparatus and a corresponding method for non-invasive intracardiac electrocardiography (ECG) by use of a magnetic and electrically conducting interference device (210). An MPI-based ECG mapping technique is proposed, wherein an interference device (210), e.g. an electrically conducting rod containing soft magnetic material, is steered through the vessel system and the heart using magnetic fields generated by a magnetic particle imaging (MPI) system so that the ECG signals measured in parallel are influenced. Using appropriately adapted evaluation means (153) this influence of the interference device (210) on the ECG signals can be evaluated to gain spatially resolved information about the electrical heart activity.
    Type: Application
    Filed: September 3, 2010
    Publication date: July 5, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Bernhard Gleich
  • Publication number: 20120165621
    Abstract: A physical configuration of cables connecting a monitoring apparatus to a human patient, where said patient and his immediate surroundings define a potentially infectious contaminated zone. The configuration provides for the monitor and main trunk cable to lie outside of the contamination zone, and one or more serial cables connect to the trunk cable and enter the contamination zone to provide contact with the patient. This physical configuration prevents contamination of the monitor and trunk cable, so they may be reused on successive patients, while lightweight and inexpensive serial cables contacting the patient and his contamination zone may be disposable. Examples of monitoring various physiological variables are provided to exemplify the universal concept of such physical configuration. Adaptation for wireless transmission is also described.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Inventors: Joseph Grayzel, Jeffrey Grayzel
  • Publication number: 20120157802
    Abstract: An ECG data acquisition device (10) can be mechanically engaged with a portable device (20) to form a combined unit. The ECG data acquisition device (10) includes a housing (11), at least two electrodes located on the surface of the housing (11) for obtaining ECG signals from a user, and a circuit assembly (100). The circuit assembly (100) includes an analog signal processing module (102), a processing module (104) having an analog/digital converter (1041), and a processor (1042) to execute a preloaded program to perform the ECG acquisition and data processing, and a communication module (106) for communicating with the portable device (20).
    Type: Application
    Filed: August 24, 2010
    Publication date: June 21, 2012
    Inventor: Chang-An Chou
  • Patent number: 8200324
    Abstract: A method carried out by a therapeutic implantable medical device includes detecting a plurality of physiologic episodes and recording a set of diagnostic data associated with the plurality of physiological episodes. The plurality of physiologic episodes are prioritized based on episode types associated with the physiologic episodes. The diagnostic data is analyzed based on a minimum and maximum number associated with each episode type relating to a minimum and maximum number of sets of diagnostic data to be recorded for the associated episode type. The recorded set of diagnostic data is deleted only if a later recorded set of diagnostic data is associated with a detected physiologic episode having an episode type of a higher priority, and deletion of the set of diagnostic data would not result in fewer sets of diagnostic data than the minimum number specified for the episode type associated with the set of diagnostic data.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: June 12, 2012
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Zhe Shen, Joseph E. Bange, Allan T. Koshiol
  • Publication number: 20120143031
    Abstract: Electrodes of a subcutaneous monitoring system receive body electrical signals that indicate both cardiac and non-cardiac muscle activity. In general, non-cardiac muscle activity is often correlated with physical activity, and physical activity is typically a strong indicator of patient health. Exemplary systems and methods that detect non-cardiac muscle activity information in sensed body electrical waveforms may provide a diagnostic tool for monitoring physical activity level over time in patients that have subcutaneous monitoring systems. In an illustrative embodiment, systems and methods for presenting patient activity information in a graphical format over intervals of time include processing ECG waveform information to identify and to accumulate non-cardiac muscular activity information during each of the intervals of time. In various implementations, number, intensity, and/or duration of the events that are identified during a time interval may be accumulated and stored for subsequent recall.
    Type: Application
    Filed: January 27, 2012
    Publication date: June 7, 2012
    Applicant: Greatbatch Ltd.
    Inventors: Andres Belalcazar, Ji Chen
  • Patent number: 8195280
    Abstract: A method of classifying arrhythmias using scatter plot analysis to define a measure of variability of a cardiac rhythm parameter such as for example, without limitation, R-R interval, A-A interval, and the slope of a portion of a cardiac signal, is disclosed. The variability measurement is derived from a scatter plot of a cardiac rhythm parameter, employing a region counting technique that quantifies the variability of the cardiac rhythm parameter while minimizing the computational complexity. The method may be employed by an implantable medical device or system, such as an implantable pacemaker or cardioverter defibrillator, or by an external device or system, such as a programmer or computer. The variability measurement may be correlated with other device or system information to differentiate between atrial flutter and atrial fibrillation, for example. The variability information may also be used by the device or system to select an appropriate therapy for a patient.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: June 5, 2012
    Assignee: Medtronic, Inc.
    Inventors: Peter M. Van Dam, Joanneke G. Groen
  • Publication number: 20120136266
    Abstract: An ECG analysis system is responsive to patient ECG data for performing an analysis of the ECG data to determine whether acute MI is present. The system first analyzes the ECG data by standard ECG analysis to determine whether acute MI is present. This analysis is followed in a first mode of operation by ACI-TIPI analysis to estimate the probability of acute MI from patient characteristics and the ECG data. In a second mode, when the standard ECG analysis is definitive as to the presence of acute MI the ACI-TIPI analysis is not run and the user is presented with only the results of the standard interpretation. If the standard ECG analysis is indeterminate as to the presence of acute MI, then the ACI-TIPI analysis is run and the results of the ACI-TIPI analysis are presented to the user.
    Type: Application
    Filed: January 27, 2010
    Publication date: May 31, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: James M. Grady
  • Patent number: 8185192
    Abstract: A volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: May 22, 2012
    Assignees: Regents of the University of Minnesota, Medtronic, Inc.
    Inventors: H. Toby Markowitz, David Scanlon, Mustafa Karamanoglu, Karl Evan Nowak, Chad Giese
  • Publication number: 20120123232
    Abstract: The present invention relates to advanced signal processing methods including digital wavelet transformation to analyze heart-related electronic signals and extract features that can accurately identify various states of the cardiovascular system. The invention may be utilized to estimate the extent of blood volume loss, distinguish blood volume loss from physiological activities associated with exercise, and predict the presence and extent of cardiovascular disease in general.
    Type: Application
    Filed: December 16, 2009
    Publication date: May 17, 2012
    Inventors: Kayvan Najarian, David Andre, Kevin Ward, Nisarg Vyas, Eric Teller, John M. Stivoric, Jonathan Farringdon, Scott K. Boehmke, Gregory Kovacs, James Gabarro, Christopher Kasabach, Soo-Yeon Ji, Abel Al Raoff, Raymond Pelletier
  • Publication number: 20120116240
    Abstract: A handheld electrocardiographic device for perform an ECG signal acquisition is provided. The ECG device includes at least two electrodes for obtaining ECG signals from a user's skin, an analog signal processing module, an analog/digital converter for digitizing the ECG signals, a processor, which controls the ECG device and processes the ECG signals, a display unit for displaying a processed result of ECG signals and other related information, a memory for data storage, a battery for providing power, at least a contacting interface having at least one of the electrodes mounted thereon, and a detecting unit for sensing a physical condition of the contacting interface, wherein the processor compares the physical condition to a preset criterion, and takes the result as a reference for processing the ECG signals.
    Type: Application
    Filed: July 14, 2010
    Publication date: May 10, 2012
    Inventor: Chang-An Chou
  • Patent number: 8170655
    Abstract: A data acquisition module for use in monitoring a plurality of physiological signals is disclosed herein. The data acquisition module may include a first signal processing path for biopotential data, a second signal processing path for therapeutic event data, and a processing unit that receives and processes the data from the first and second signal processing paths. The data acquisition module may further compare identified likely therapeutic events in each of a plurality of psychological signals.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: May 1, 2012
    Assignee: The General Electric Company
    Inventors: Anthony Ricke, Gordon Ian Rowlandson
  • Publication number: 20120101398
    Abstract: A method for visualization of electrophysiology information can include storing electroanatomic data (14) in memory, the electroanatomic data representing electrical activity on a surface of an organ over a time period. An interval within the time period is selected in response to a user selection (28). Responsive to the user selection of the interval, a visual representation (26) of physiological information for the user selected interval is generated by applying at least one method to the electroanatomic data (14). The visual representation (26) is spatially represented on a graphical representation of a predetermined region of the surface of the organ.
    Type: Application
    Filed: November 10, 2009
    Publication date: April 26, 2012
    Applicant: CARDIOINSIGHT TECHNOLOGIES, INC.
    Inventors: Charulatha Ramanathan, Harold M. Wodlinger, Ping Jia, Harris Gasparakis, Steven G. Arless, John E. Anderson, Soniya Bhojwani
  • Patent number: 8165673
    Abstract: A defibrillation system for use in treatment of ventricular fibrillation includes at least one sensor to measure heart rhythm; at least one applicator to apply a defibrillation pulse to a patient; and at least one processor in communication with the sensor and the applicator to determine a first value related to the rate of change of a leading edge of a lagged phase space reconstruction of ventricular fibrillation heart rhythm measured over a period of time.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: April 24, 2012
    Assignee: University of Pittsburgh—of the Commonwealth System of Higher Education
    Inventors: Lawrence D. Sherman, Clifton W. Callaway, James J. Menegazzi
  • Publication number: 20120089039
    Abstract: A microcontrolled electrocardiographic monitoring circuit with differential voltage encoding is provided. An input signal path includes an electrode, a low pass filter, and an amplifier, which are each connected in-line. The electrode senses an input signal via a conductive surface and the amplifier outputs a filtered amplified output signal. A microcontroller circuit includes an input codec, an analog-to-digital converter, and an encoder. The analog-to-digital converter is connected to the input signal path through an output of the amplifier and converts the filtered amplified output signal into a data stream of discrete digital values. The encoder determines a differential voltage between a current discrete digital value and a prior discrete digital value in the data stream. Persistent memory is connected to the microcontroller circuit via a peripheral serial interface bus, wherein the differential voltages for each of the discrete digital values in the data stream are stored into the persistent memory.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 12, 2012
    Inventors: Jason Felix, Gust H. Bardy
  • Publication number: 20120083706
    Abstract: Measured values of ST segment deviations obtained from a multi-lead ECG are transformed and displayed on a polar ST Circle Display, with zero ST deviation values located on a circle having a diameter that is greater than a maximum absolute ST segment deviation value obtained for any measured or derived lead. An ischemic condition and a location of the ischemia can thereby be easily determined.
    Type: Application
    Filed: February 26, 2010
    Publication date: April 5, 2012
    Applicant: DRAEGER MEDICAL SYSTEMS, INC.
    Inventors: Stefan P. Nelwan, Wolfgang Scholz
  • Publication number: 20120071776
    Abstract: A heart rate monitor system comprising: a user attachment means; a heart rate monitor attached to the user attachment means, and configurable to monitor the heart rate of a user during physical activity and during rest, the heart rate monitor comprising: a wireless transmitter configurable to wirelessly transmit heart rate data to a nearby receiver; a receiver, the receiver configurable to receive wireless transmissions from the wireless transmitter, and further configured to removeably connect to a portable computer device, the receiver comprising: a housing; an circuit located within the housing; a bandpass filter in signal communication with the circuit; a headset compatibility circuit in signal communication with the band pass filter; a connector means attached to the housing, and in signal communication with the headset compatibility circuit; and a portable computer device with a headset connector.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 22, 2012
    Inventors: W. Wilson Keithline, Justin J. Morgenthau
  • Publication number: 20120065531
    Abstract: The present invention is a visual cuing device which allows users to rapidly and easily identify ECG/EKG cardiac arrhythmias and twelve lead ECG/EKG arrhythmias. A visual cuing device contains a plurality of panels with a plurality of graphically displayed ECG/EKG abnormalities alternated with visually high-contrast, solid colored text sections. A visual cuing device may also contain additional tools, such as a heart rate reference line, time reference line or baseline window to aid in analysis and interpreting ECG/EKG strips. A visual cuing device may also be adapted to display using a touch screen or other user interface.
    Type: Application
    Filed: May 18, 2011
    Publication date: March 15, 2012
    Inventor: Gary Krause
  • Patent number: 8128573
    Abstract: A method of identifying the fossa ovalis in a patient by positioning one or more electrodes against the tissue of the interatrial septum of the patient and acquiring unipolar and/or bipolar electrograms of the tissue of the interatrial septum while moving the electrodes to a plurality of positions against the tissue of the interatrial septum. The fossa ovalis is identified on the basis of unipolar voltage reduction, signal fractionation, broadened signal, reduced signal slew rate, reduced local myocardial impedance, increased phase angle and/or increased pacing threshold. An apparatus for identifying the fossa ovalis is also provided.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: March 6, 2012
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventor: Subramaniam C. Krishnan
  • Publication number: 20120041328
    Abstract: Systems and methods are provided for monitoring a patient and graphically representing ST-segment deviations.
    Type: Application
    Filed: October 27, 2011
    Publication date: February 16, 2012
    Applicant: MINDRAY DS USA, INC.
    Inventors: Cadathur Rajagopalan, Scott Eaton, Joe Petruzzelli
  • Publication number: 20120022387
    Abstract: A retractable multi-use cardiac monitor is provided that includes a memory, and a first side that includes a first housing where a first sensing connector is on the outside of the first housing, and where the first sensing connector is configured to collect electrocardiogram (ECG) data and store ECG data onto the memory. The retractable multi-use cardiac monitor also includes a second housing including a wire retractor and a second sensing connector, where the second sensing connector is on the outside of the second housing, and the wire retractor is configured to extend and retract a wire that connects the second and first sides, and where the second sensing connector is configured to collect ECG data and store ECG data onto the memory. The retractable multi-use cardiac monitor further includes a wireless radio configured to transmit a portion of collected ECG data from the memory to a destination.
    Type: Application
    Filed: May 19, 2011
    Publication date: January 26, 2012
    Inventor: Daniel Balda
  • Patent number: 8103335
    Abstract: A cardiogram waveform correcting and displaying device is disclosed that is capable of facilitating visibility of cardiogram waveforms. A first filtering system 58-1 through nth filtering system 58-n are low-cut filters, each having a first cutoff frequency fc1 through an nth cutoff frequency fcn, respectively. Recognition module recognizes feature values of waveforms related to variation of the waveforms in accordance with any outputs of the first filtering system 58-1 through the nth filtering system 58-n. Judging module 62 selects which of the first through the nth filter is used based on the recognized feature values with the recognition module. A filter which restricts base-line variation is used when the base-line variation is large, and a filter having less influence to waveforms is used when the base-line variation is small. Display controller displays on a display portion output of the selected filter.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: January 24, 2012
    Assignee: Nihon Kohden Corporation
    Inventors: Ryuji Nagai, Shinya Nagata
  • Patent number: 8103334
    Abstract: A cardiac rhythm management system that includes a pacemaker configured for biventricular pacing and an external programmer with an associated display for displaying electrogram data and markers representing ventricular events. Associated with each marker are intraventricular intervals designed to relate information to a user in a manner suited for ventricular resynchronization pacing.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: January 24, 2012
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Scott Vanderlinde, Jeffrey E. Stahmann, Rene H. Wentkowski, David Ternes, James Kalgren
  • Publication number: 20120016250
    Abstract: Systems, devices and methods are provided for displaying statistical distributions of cardiac events. A device embodiment comprises circuitry adapted to communicate with a medical device that is adapted to acquire data regarding cardiac events occurring at two or more cardiac sites, and display means for displaying a histogram of the data as two or more statistical distributions for the two or more cardiac sites. The histogram includes a number of histogram bins. At least one of the histogram bins includes both a representation for at least a portion of a statistical distribution of a cardiac event for a first cardiac site and a representation for at least a portion of a statistical distribution of a cardiac event for a second cardiac site. Other embodiments are provided herein.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 19, 2012
    Inventors: Jeffrey E. Stahmann, Rene H. Wentkowski, James Kalgren, Par Lindh
  • Patent number: 8099158
    Abstract: A method and apparatus for automatically selecting an end of diastole image frame and an end of systole image frame for cardiac analysis. In the method and apparatus, a plurality of image frames of a heart having a contrast medium injected into the heart and an electrocardiogram (ECG) curve of the heart are obtained. Candidate image frames are identified in the plurality of image frames that correspond to a first predetermined point on the ECG curve of the heart associated with the end of diastole. An end of diastole image frame is selected from the candidate image frames. An end of systole image frame is then identified and selected from the remaining one of the plurality of image frames.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: January 17, 2012
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Weng Lei, John Baumgart
  • Publication number: 20110319781
    Abstract: The invention relates to a method for recording an electrocardiogram, for example, comprising the steps of: a) receiving electrocardiogram signals from at least two electrodes (2, 3, 4, 5); b) calculating a current electrocardiogram from the received electrocardiogram signals, assuming an arrangement of the electrodes (2, 3, 4, 5); c) determining a deviation of the calculated current electrocardiogram from a reference electrocardiogram; d) repeating the steps b) and c), wherein each repetition assumes a different electrode arrangement; and e) identifying which of the determined deviations is the minimum.
    Type: Application
    Filed: January 25, 2010
    Publication date: December 29, 2011
    Applicant: Personal Medsystems GmbH
    Inventors: Markus Riemenschnider, Klaus Bonaventure, Felix Brand
  • Patent number: 8086303
    Abstract: The disclosed method analyzes cardiac electrophysiological signals, including ECG and internal cardiac electrograms, based on multi-level symbolic complexity calculation and multi-dimensional mapping. The results may be used to objectively identify cardiac disorders, differentiate cardiac arrhythmias, characterize pathological severities, and predict life-threatening events. Multi-level symbolization and calculation of the electrophysiological signal is used provide better reliability and analysis resolution for identifying and characterizing cardiac disorders. Adaptive analysis of the cardiac signal complexity enables calculation efficiency and reliability with high SNR, and with low calculation volume and power consumption. One dimension (time or frequency domain) and multi-dimension symbolic analysis is used to provide more information of cardiac pathology and high risk rhythm transition to doctors.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: December 27, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hongxuan Zhang, Detlef W. Koertge
  • Publication number: 20110306894
    Abstract: An ECG acquisition device including a central processing unit, an input interface connected to the central processing unit for acquiring subject biometric data, a memory module connected to the central processing unit for storing the subject biometric data and ECG data, and a user interface connected to the central processing unit for initiating acquisition of the subject biometric and ECG data. The ECG acquisition device is connected to a site PC for downloading and managing the ECG and biometric data, which is transmitted to a Clinical Information System by the site PC.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 15, 2011
    Inventors: Randol R. Spaulding, Brock E. Heinz, Paul B. Schultz, Jay W. Mason
  • Publication number: 20110282168
    Abstract: A health monitoring system includes a client device having one or more sensors to take medical or environmental measurements. The client device can interact with a server device to guide the user through the use of a sensor. The state of the sensors is controlled at the server to provide for flexibility of the health monitoring system.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 17, 2011
    Applicant: WALDO NETWORKS
    Inventors: Alan Robert Weiss, Samuel Burrill Fuller, Oscar Paul Frowijn, Afsheen David Gholami, Gad Levy Krumholz
  • Patent number: 8060193
    Abstract: Systems and methods are provided for monitoring a patient and graphically representing ST-segment deviations. A receiver acquires, from a plurality of leads, electrocardiogram (ECG) signals that each includes an ST-segment. A processor processes the ECG signals to determine baseline and current ST-segment deviations relative to an isoelectric value. A display module displays a graph that includes a first axis representing ST-segment deviation values and a second axis representing the plurality of leads. At each location along the second axis representing a respective lead, the graph displays a first set of graphic indicia representing the baseline ST-segment deviations and a second set of graphic indicia representing the current ST-segment deviations. In certain embodiments, the graphic indicia are represented by bar graphs. In other embodiments, the graphic indicia are represented by symbols that may be connected by line segments.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: November 15, 2011
    Assignee: Mindray DS USA, Inc.
    Inventors: Cadathur Rajagopalan, Scott Eaton, Joe Petruzzelli, Jack Balji
  • Patent number: 8060191
    Abstract: A wireless cardiogram signal diagnostic instrument includes a band, a signal transmitting device, two sets of connecting pieces, and a conductive assembly. The band has two opposite mounting portions separated by a distance. The two mounting portions are provided with the conductive assembly having a first conductive piece and a second conductive piece. The signal transmitting device is provided with a third conductive piece. The two sets of connecting pieces each have a first connecting piece that is conductive provided on the mounting portion of the band and a second connecting piece that is conductive provided on the signal transmitting device. The first connecting piece is correspondingly assembled with the second connecting piece, so that the signal transmitting device can be detachably assembled on the band. Via the above arrangement, the instrument can be worn on a user's chest to collect and measure the variation values of cardiogram voltages.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: November 15, 2011
    Assignee: Zentan Technology Co., Ltd.
    Inventor: Tong-Pie Chen
  • Publication number: 20110275942
    Abstract: An embodiment of a device for reporting a heart failure status of a patient comprises: a parameter acquisition module configured to acquire at least one trended heart failure parameter; a predetermined event acquisition module configured to acquire at least one predetermined event corresponding to the at least one trended heart failure parameter, wherein each of the at least one predetermined event represents an event condition where a predetermined event definition is satisfied; an alert acquisition module configured to acquire at least one heart failure status alert associated with the at least one predetermined event, wherein each of the at least one alert represents an alert condition where a predetermined alert definition is satisfied; and an output communication module configured to communicate the at least one heart failure status alert.
    Type: Application
    Filed: July 18, 2011
    Publication date: November 10, 2011
    Inventors: Jeffrey E. Stahmann, John Hatlestad, Qingsheng Zhu
  • Patent number: 8054175
    Abstract: A portable type information transmitting apparatus has a bionic information measuring section that outputs bionic information in accordance with a detected bionic signal. A standard radio wave receiving section receives a standard radio wave including current time information. A time counting section counts time. A time correcting section corrects the time counted by the time counting section based on the standard radio wave received by the standard radio wave section. A transmission data generating section generates transmission data including first time information corresponding to the time counted by the time counting section and the bionic information from the bionic information measuring section. A data transmission section transmits the transmission data generated by the transmission data generating section.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: November 8, 2011
    Assignee: Seiko Instruments Inc.
    Inventors: Kazuo Kato, Akira Takakuka
  • Patent number: 8055333
    Abstract: Electrocardiogram (ECG) recorded signals are processed by a computer-implemented method to substantially remove extraneous signals to produce intermediary signals, and to separate the intermediary signals using a non-orthogonal transformation method such as independent component analysis to produce independent components of signals. The separated signals are displayed to help physicians to analyze medical conditions and to identify locations of abnormal heart conditions.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: November 8, 2011
    Inventors: Jeng-Ren Duann, Tzyy-Ping Jung
  • Publication number: 20110270112
    Abstract: A multi-function health monitor is capable of performing a resting 12-lead ECG test, an ECG stress test, a 24-hour holter monitor evaluation and or a 30-day MCT monitoring. Using only 3 electrodes, the multifunction health monitor derives 6 channels (Limb leads & Augmented leads) of data with the noise cancellation (ground) effect of a virtual dynamic RL electrode. An electrode resistivity measurement system quantifies and may compensate for increasing resistance the electrodes and the patient that results from the length of time the electrodes are installed on a patient. The multi-function health monitor can provide data analysis through the gate array as the data is acquired. Data may also be stored for remote analysis as well as for transmission to remote stations upon occurrence of one or more threshold events. Parameters for threshold events may be adjusted remotely to obviate the need for a patient to travel for system adjustment.
    Type: Application
    Filed: November 2, 2010
    Publication date: November 3, 2011
    Inventors: Loren A. Manera, Kenneth L. Burns
  • Patent number: 8046059
    Abstract: A mobile diagnosis device comprised of an ECG unit (1) to record an ECG signal (55), with the ECG unit (1) being connected or connectible to two or more ECG electrodes (27, 28) to dissipate electrical signals from a patient's body, and comprised of a pulsoximetry unit (2) for simultaneous recording of a volume pulse signal (56), with the pulsoximetry unit (2) comprising at least one light source (17, 18) and at least one light sensor (20) for optical measurement of blood perfusion in the vascular system of a patient's body tissue, and comprised of a program-controlled evaluation unit (4) to evaluate the ECG signal (55) and the volume pulse signal (56).
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: October 25, 2011
    Inventors: Ok Kyung Cho, Yoon Ok Kim
  • Patent number: 8036734
    Abstract: A method for determining cardiac impulse conduction, in particular three-dimensional cardiac impulse conduction, in a patient, comprising: generating an image recording of an area of the body of the patient capturing at least partially electrocardiogram electrodes arranged on the body of the patient by an imaging modality; determining positions of the electrocardiogram electrodes in a system of coordinates assigned to the imaging modality; recording of potential data of some of the electrocardiogram electrodes; and reconstructing cardiac impulse conduction depending on the determined positions of the electrocardiogram electrodes, the image recording and the recording of potential data of the electrocardiogram electrodes, wherein at least one image recording is generated substantially simultaneously with the recording of potential data of the electrocardiogram electrodes or is generated in the period between two recordings of potential data of the electrocardiogram electrodes.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: October 11, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventor: Sebastian Schmidt
  • Patent number: 8036735
    Abstract: A system evaluates the performance of an implantable medical device, such as by using a remote external server and a user interface and stored historical physiological data of a population of congestive heart failure (CHF) patients. A processor is coupled to a patient data storage device to apply multiple algorithm variations against the same implantable physiological data from the patient to produce corresponding resulting CHF indicators. The user interface includes a display that is configured to display to a user information allowing comparison between the resulting CHF indicators from the multiple algorithm variations. The display also includes a population data selector to permit the user to select physiological data from a population that includes a different set of one or more patients or physiological data collected over a period of time from the patient. This permits optimization of an algorithm parameter or selection of a best performing algorithm.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: October 11, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Shelley M. Cazares, Haresh G. Sachanandani, Benjamin Ettori, Dan Li, Yanting Dong
  • Publication number: 20110245633
    Abstract: A wearable biosensor device gathers physiological data from the wearer and uses this information over time to diagnose, detect, monitor, and treat psychological disorders. The device triggers real-time psychological treatments based on personalized estimates of the wearer stored on the biosensor device. A therapeutic stimulus is selected from a library based on the data received from the wearable biosensor device and relating to psychological condition(s), and that stimulus is delivered to the wearer via an associated display. The aggregate data from use of the device is provided to clinicians and/or patients, in detail and in summary report forms, to indicate the symptoms of, detect and diagnose among disorders or subtypes, to analyze treatment effects, and to isolate the underlying causes of one or more psychological disorders or states.
    Type: Application
    Filed: March 4, 2011
    Publication date: October 6, 2011
    Applicant: Neumitra LLC
    Inventors: Robert Goldberg, Shailendra Yadav
  • Publication number: 20110245702
    Abstract: An electrodynamic sensor comprises a high input impedance electrometer adapted to measure small electrical potentials originating from an object under test and having a pair of input probes, characterised in that at least one of said pair of input probes has no direct electrical contact with said object, wherein the circuit arrangement of said electrometer comprises an electrode (1) connected to an amplifier (9), which includes a combination of ancillary circuits cumulatively to increase the sensitivity of said electrometer to said small electrical potentials whilst not perturbing the electrical field associated therewith.
    Type: Application
    Filed: February 4, 2011
    Publication date: October 6, 2011
    Applicant: The University of Sussex
    Inventors: Terence D. CLARK, Robert J. PRANCE, Christopher J. HARLAND
  • Patent number: 8032208
    Abstract: Systems, devices and methods are provided for displaying statistical distributions of cardiac events. A device embodiment comprises circuitry adapted to communicate with a medical device that is adapted to acquire data regarding cardiac events occurring at two or more cardiac sites, and display means for displaying a histogram of the data as two or more statistical distributions for the two or more cardiac sites. The histogram includes a number of histogram bins. At least one of the histogram bins includes both a representation for at least a portion of a statistical distribution of a cardiac event for a first cardiac site and a representation for at least a portion of a statistical distribution of a cardiac event for a second cardiac site. Other embodiments are provided herein.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: October 4, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Jeffrey E. Stahmann, Rene H. Wentkowski, James Kalgren, Par Lindh