Patents Assigned to Cameron Health, Inc.
  • Sensing vector selection in a cardiac stimulus device with postural assessment
    Patent number: 9119596
    Abstract: Methods, implantable medical devices and systems configured to perform analysis of captured signals from implanted electrodes to identify cardiac arrhythmias. In an illustrative embodiment, signals captured from two or more sensing vectors are analyzed, where the signals are captured with a patient in at least first and second body positions. Analysis is performed to identify primary or default sensing vectors and/or templates for event detection.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: September 1, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Rick Sanghera, Venugopal Allavatam
  • PATIENT SCREENING TOOLS FOR IMPLANTABLE CARDIAC STIMULUS SYSTEMS
    Publication number: 20150196211
    Abstract: Tools and devices are provided for determining whether a patient is well suited to receiving an implantable cardiac stimulation device by analyzing cardiac signals captured using external or cutaneous electrodes. Some of the illustrative tools include shapes for visual comparison to printed ECG strips. Kits for use of illustrative tools are also shown. Automatic devices are also disclosed which perform at least some analytical functions electronically for a user. In an example, a printed ECG strip is visually compared to a shape in order to ensure a patient is well suited to receiving a cardiac stimulation device having a particular implant location and/or cardiac signal analysis method implementation.
    Type: Application
    Filed: March 6, 2015
    Publication date: July 16, 2015
    Applicant: CAMERON HEALTH, INC.
    Inventors: Rick Sanghera, Alan F. Marcovecchio, James M. Keefe
  • Electrode spacing in a subcutaneous implantable cardiac stimulus device
    Patent number: 9079035
    Abstract: Methods and implantable cardiac stimulus devices that include leads designed to avoid post-shock afterpotentials. Some examples are directed toward lead-electrode designs that reduce the impact of an applied stimulus on sensing attributes. These examples may find particular use in systems that provide both sensing and therapy delivery from subcutaneous location.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: July 14, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Rick Sanghera, Eric F. King, Don E. Scheck, Abdulkader O. Sudam, Jay A. Warren
  • Signal analysis in implantable cardiac treatment devices
    Patent number: 9042980
    Abstract: Methods and devices for cardiac signal analysis in implantable cardiac therapy systems. Several signal processing and/or conditioning methods are shown including R-wave detection embodiments including the use of thresholds related to previous peak amplitudes. Also, some embodiments include sample thresholding to remove extraneous data from sampled signals. Some embodiments include weighting certain samples more heavily than other samples within a sampled cardiac signal for analysis.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: May 26, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Alan H. Ostroff, James W. Phillips, Venugopal Allavatam
  • SELECTABLE UPPER VOLTAGE RANGE MONITORING CIRCUIT
    Publication number: 20150115900
    Abstract: A battery voltage measuring circuit for an implantable cardiac device is presented. Since the usable battery voltage for the device is limited to an upper range of voltages, the need for measuring lower voltages at which the battery is approaching end of life is of no use. The disclosed invention allows for the measurement of a selectable upper range of battery levels that can be chosen without using a level shifting device such as a zener diode. Multiple voltage ranges with associated measurement resolutions can be achieved without using high current zener diode implementations. This allows for a trade-off between measurement range and resolution while resulting in a lower power and more accurate measurement circuit. Conventional zener diode implementations only allow for a single measurement range and are prone to non-linear error as the voltage measurement range increases.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Applicant: Cameron Health, Inc.
    Inventor: Ravi S. Ananth
  • Adaptive waveform appraisal in an implantable cardiac system
    Patent number: 8965491
    Abstract: Methods and implantable devices for cardiac signal analysis. The methods and devices make use of waveform appraisal techniques to distinguish event detections into categories for suspect events and waveform appraisal passing events. When adjustments are made to the data entering analysis for waveform appraisal, the waveform appraisal thresholds applied are modified as well. For example, when the data analysis window for waveform appraisal changes in length, a waveform appraisal threshold is modified. Other changes, including changes in sensing characteristics with which waveform appraisal operates may also result in changes to the waveform appraisal threshold including changes in gain, sensing vector, activation of other devices, implantee posture and other examples which are explained.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: February 24, 2015
    Assignee: Cameron Health, Inc.
    Inventors: Venugopal Allavatam, Rick Sanghera, Jay A. Warren
  • Implantable cardiac devices and methods using an x/y counter
    Patent number: 8965530
    Abstract: Methods, implantable medical devices and systems configured to perform analysis of captured signals from implanted electrodes to identify cardiac arrhythmias. In an illustrative embodiment, signals captured from two or more sensing vectors are analyzed, where the signals are captured with a patient in at least first and second body positions. Analysis is performed to identify primary or default sensing vectors and/or templates for event detection.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: February 24, 2015
    Assignee: Cameron Health, Inc.
    Inventors: Rick Sanghera, Venugopal Allavatam
  • Implantable cardiac systems with baseline correction in response to noise detection
    Patent number: 8954136
    Abstract: Implantable cardiac devices and methods of their use. A method of operation in an implantable cardiac device may include steps for characterizing detected events as noise or not noise, identifying a set of consecutive noise events or a threshold quantity of noise events in a set period of time and declaring a noisy series to have occurred. In response to the declaration of a noisy series, the method initiates a baseline correction algorithm. Devices for performing such methods are also disclosed.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: February 10, 2015
    Assignee: Cameron Health, Inc.
    Inventors: Paul Freer, Rick Sanghera, Venugopal Allavatam
  • Method for discriminating between ventricular and supraventricular arrhythmias
    Patent number: 8942802
    Abstract: The present invention is directed toward a detection architecture for use in implantable cardiac rhythm devices. The detection architecture of the present invention provides methods and devices for discriminating between arrhythmias. Moreover, by exploiting the enhanced specificity in the origin of the identified arrhythmia, the detection architecture can better discriminate between rhythms appropriate for device therapy and those that are not.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: January 27, 2015
    Assignee: Cameron Health, Inc.
    Inventors: Alan H. Ostroff, Jay A. Warren, Gust H. Bardy
  • Methods and devices for accurately classifying cardiac activity
    Patent number: 8929977
    Abstract: Methods, systems, and devices for signal analysis in an implanted cardiac monitoring and treatment device such as an implantable cardioverter defibrillator. In illustrative examples, captured data including detected events is analyzed to identify likely overdetection of cardiac events. In some illustrative examples, when overdetection is identified, data may be modified to correct for overdetection, to reduce the impact of overdetection, or to ignore overdetected data. New methods for organizing the use of morphology and rate analysis in an overall architecture for rhythm classification and cardiac signal analysis are also discussed.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: January 6, 2015
    Assignee: Cameron Health, Inc.
    Inventors: Venugopal Allavatam, Surekha Palreddy, Rick Sanghera, Jay A. Warren
  • Robust rate calculation in an implantable cardiac stimulus or monitoring device
    Patent number: 8909331
    Abstract: Devices and methods for analyzing cardiac signal data. An illustrative method includes identifying a plurality of detected events and measuring intervals between the detected events for use in rate estimation. In the illustrative embodiment, a set of intervals is used to make the rate estimation by first discarding selected intervals from the set. The remaining intervals are then used to calculate an estimated interval, for example by averaging the remaining intervals.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: December 9, 2014
    Assignee: Cameron Health, Inc.
    Inventors: Rick Sanghera, Venugopal Allavatam, Jay A. Warren, Mark R. Schroeder
  • IMPLANTABLE CARDIAC DEVICE SENSING WITH REFRACTORY PERIOD ALIGNMENT TO SIGNAL PEAK
    Publication number: 20140350423
    Abstract: Methods and devices for addressing difficulty with cardiac event sensing that can arise if the starting point of the cardiac cycle is not well aligned to the intended starting point of a detection profile used for sensing. As an improvement, illustrative methods and devices provide an addition to cardiac sensing operations by adjusting the starting point of a detection profile to align with a desired point in the cardiac signal.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 27, 2014
    Applicant: Cameron Health, Inc.
    Inventors: Rick Sanghera, Venugopal Allavatam, Mark Schroeder
  • Methods and devices for accurately classifying cardiac activity
    Patent number: 8880161
    Abstract: Methods, systems, and devices for signal analysis in an implanted cardiac monitoring and treatment device such as an implantable cardioverter defibrillator. In some examples, captured data including detected events is analyzed to identify likely overdetection of cardiac events. In some illustrative examples, when overdetection is identified, data may be modified to correct for overdetection, to reduce the impact of overdetection, or to ignore overdetected data. Several examples emphasize the use of morphology analysis using correlation to static templates and/or inter-event correlation analysis.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: November 4, 2014
    Assignee: Cameron Health, Inc.
    Inventors: Jay A. Warren, Rick Sanghera, Venugopal Allavatam, Surekha Palreddy
  • CARDIAC SIGNAL VECTOR SELECTION WITH MONOPHASIC AND BIPHASIC SHAPE CONSIDERATION
    Publication number: 20140275917
    Abstract: Systems, methods and non-transient software media for performing sensing vector selection in an implantable cardiac device by assessing biphasic or monophasic characteristics of the cardiac signal in vectors under analysis. A factor associated with the biphasic or monophasic nature of the cardiac signal, as seen from a given sensing vector, can be inserted into the assessment of which of several available sensing vectors is considered “best” for purposes of cardiac signal analysis. Additional factors may be considered beyond the biphasic or monophasic nature including the quantity of turning points or inflections and amplitude variability.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: Cameron Health, Inc.
    Inventors: Venugopal Allavatam, Rick Sanghera, Mark R. Schroeder
  • Methods for implanting a subcutaneous defibrillator
    Patent number: 8838234
    Abstract: A power supply for an implantable cardioverter-defibrillator for subcutaneous positioning between the third rib and the twelfth rib and using a lead system that does not directly contact a patient's heart or reside in the intrathoracic blood vessels and for providing anti-tachycardia pacing energy to the heart, comprising a capacitor subsystem for storing the anti-tachycardia pacing energy for delivery to the patient's heart; and a battery subsystem electrically coupled to the capacitor subsystem for providing the anti-tachycardia pacing energy to the capacitor subsystem.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: September 16, 2014
    Assignee: Cameron Health, Inc.
    Inventors: Alan H. Ostroff, William J. Rissmann, Gary P. Mezack, Gust H. Bardy
  • METHODS AND DEVICES FOR ACCURATELY CLASSIFYING CARDIAC ACTIVITY
    Publication number: 20140257120
    Abstract: Methods, systems, and devices for signal analysis in an implanted cardiac monitoring and treatment device such as an implantable cardioverter defibrillator. In some examples, captured data including detected events is analyzed to identify likely overdetection of cardiac events. In some illustrative examples, when overdetection is identified, data may be modified to correct for overdetection, to reduce the impact of overdetection, or to ignore overdetected data. Several examples emphasize the use of morphology analysis using correlation to static templates and/or inter-event correlation analysis.
    Type: Application
    Filed: May 23, 2014
    Publication date: September 11, 2014
    Applicant: Cameron Health, Inc.
    Inventors: Jay A. Warren, Rick Sanghera, Venugopal Allavatam, Surekha Palreddy
  • METHODS AND DEVICES IMPLEMENTING DUAL CRITERIA FOR ARRHYTHMIA DETECTION
    Publication number: 20140257421
    Abstract: Methods and devices providing multiple criteria for use in arrhythmia identification. Based on inputs including defined rules or parameters, one of a more conservative or more aggressive set of arrhythmia identification parameters can be selected. One or the other of the selectable sets of arrhythmia identification parameters may also be adaptive or modifiable during the use of the system, for example, in response to identified nonsustained episodes, the more conservative set of arrhythmia identification parameters can be modified to become still more conservative. Such modification of arrhythmia identification criteria allows reduced time to therapy when indicated, while allowing more deliberate decisions in other circumstances.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Applicant: Cameron Health, Inc.
    Inventors: Rick Sanghera, Venugopal Allavatam
  • Method of implanting and using a subcutaneous defibrillator
    Patent number: 8831720
    Abstract: A subcutaneous implantable cardioverter-defibrillator is disclosed which has an electrically active canister which houses a source of electrical energy, a capacitor, and operational circuitry that senses the presence of potentially fatal heart rhythms. At least one subcutaneous electrode that serves as the opposite electrode from the canister is attached to the canister via a lead system. Cardioversion-defibrillation energy is delivered when the operational circuitry senses a potentially fatal heart rhythm. There are no transvenous, intracardiac, or epicardial electrodes. A method of subcutaneously implanting the cardioverter-defibrillator is also disclosed as well as a kit for conducting the method.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: September 9, 2014
    Assignee: Cameron Health, Inc.
    Inventors: Gust H. Bardy, Riccardo Cappato
  • Implantable cardiac systems with baseline correction in response to noise detection
    Patent number: 8831711
    Abstract: Implantable cardiac devices and methods of their use. A method of operation in an implantable cardiac device may include steps for characterizing detected events as noise or not noise, identifying a set of consecutive noise events or a threshold quantity of noise events in a set period of time and declaring a noisy series to have occurred. In response to the declaration of a noisy series, the method initiates a baseline correction algorithm. Devices for performing such methods are also disclosed.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: September 9, 2014
    Assignee: Cameron Health, Inc.
    Inventors: Paul Freer, Rick Sanghera, Venugopal Allavatam
  • Programmer for use with an implantable medical device
    Patent number: D721180
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: January 13, 2015
    Assignee: Cameron Health, Inc.
    Inventors: Matthew J. Rollins, Steven Egge, Mark Allen Morse