Patents Assigned to Cameron Health, Inc.
  • METHODS AND IMPLANTABLE DEVICES FOR DETECTING ARRHYTHMIA
    Publication number: 20160045130
    Abstract: Methods and devices for accelerating the identification of arrhythmias in implantable medical devices. Following identification of a potential arrhythmia onset condition, such as by identifying a plurality of closely coupled detected events, a retrospective pattern recognition analysis is performed to seek out a possible onset comprising a Torsades de Pointes. Although the methods and devices are designed to target Torsades de Pointes, wider application to other arrhythmia onset conditions is contemplated as well.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 18, 2016
    Applicant: CAMERON HEALTH, INC.
    Inventors: Mark R. Schroeder, Venugopal Allavatam
  • PEAK SELECTION FOR SELF CORRELATION ANALYSIS OF CARDIAC RATE IN AN IMPLANTABLE MEDICAL DEVICES
    Publication number: 20160045132
    Abstract: Self-correlation enhancements and implementations are described. In particular, certain examples demonstrate the use of a peak selector to identify peaks of a self-correlation function which serve as candidate cardiac rates for an implantable medical device. The approach may enable an alternative calculation of cardiac rate in an implantable medical device as a stand-alone rate detector or as a double-check of other rate calculations.
    Type: Application
    Filed: August 6, 2015
    Publication date: February 18, 2016
    Applicant: CAMERON HEALTH, INC.
    Inventor: Krzysztof Z. Siejko
  • USE OF DETECTION PROFILES IN AN IMPLANTABLE MEDICAL DEVICE
    Publication number: 20160045129
    Abstract: Implantable medical device systems and methods configured to use a detection profile selected from among a plurality of detection profiles to define a detection threshold for identifying cardiac events, in which a close call definition is used to determine which of the plurality of detection profiles is to be chosen. Upon identifying a close call, in which an overdetection nearly occurred but did not actually take place, a relatively less sensitive detection profile is chosen.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 18, 2016
    Applicant: CAMERON HEALTH, INC.
    Inventor: Venugopal Allavatam
  • CARDIAC RATE TRACKING IN AN IMPLANTABLE MEDICAL DEVICE
    Publication number: 20160045131
    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: Application
    Filed: August 6, 2015
    Publication date: February 18, 2016
    Applicant: CAMERON HEALTH, INC.
    Inventor: Krzysztof Z. Siejko
  • Data manipulation following delivery of a cardiac stimulus in an implantable cardiac stimulus device
    Patent number: 9242112
    Abstract: Methods of cardiac rhythm analysis in an implantable cardiac stimulus device, and devices configured for such methods. In an illustrative embodiment, certain data relating to cardiac event rate or amplitude is modified following delivery of a cardiac stimulus. In another embodiment, cardiac rhythm analysis is performed using one of plural states, with the plural states using different criteria, such as a detection threshold, to detect cardiac events in a sensed signal. Following delivery of a cardiac stimulus, data is manipulated to force the analysis into one of the states, where stimulus is delivered, in the illustrative embodiment, only after a different state is invoked. Implantable devices incorporating operational circuitry for performing such methods are also included in other illustrative embodiments.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: January 26, 2016
    Assignee: CAMERON HEALTH, INC.
    Inventors: Surekha Palreddy, Venugopal Allavatam
  • Method for increasing buck regulator efficiency using charge recapturing in an implantable cardiac device
    Patent number: 9238148
    Abstract: A typical power switch in a Buck Regulator requires a pre-driver to ensure rapid transition from its ON to OFF states. In this invention, the shoot through current in the pre-driver and the power switch's gate-charge in a Buck regulator is itself recaptured in the capacitor of the buck regulator. The recapturing of this otherwise wasted shoot-through current and gate charge allows for increased efficiency of the regulator. The recapture may be selectively disabled to accommodate high power operations of the system, if such are used; the recapture may in an alternative mode be always performed. As a result, reduced power consumption can be achieved.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: January 19, 2016
    Assignee: CAMERON HEALTH, INC.
    Inventor: Ravi S. Ananth
  • METHODS AND DEVICES IMPLEMENTING DUAL CRITERIA FOR ARRHYTHMIA DETECTION
    Publication number: 20160001089
    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: September 11, 2015
    Publication date: January 7, 2016
    Applicant: CAMERON HEALTH, INC.
    Inventors: Venugopal Allavatam, Rick Sanghera
  • METHOD FOR DISCRIMINATING BETWEEN VENTRICULAR AND SUPRAVENTRICULAR ARRHYTHMIAS
    Publication number: 20160001090
    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: Application
    Filed: September 15, 2015
    Publication date: January 7, 2016
    Applicant: CAMERON HEALTH, INC.
    Inventors: Alan H. Ostroff, Jay A. Warren, Gust H. Bardy
  • ADAPTIVE CONFIRMATION OF TREATABLE ARRHYTHMIA IN IMPLANTABLE CARDIAC STIMULUS DEVICES
    Publication number: 20150375004
    Abstract: Methods and devices for adjusting therapy delivery decisions in an implantable cardiac stimulus device by observing cardiac activity following an initial identification of a treatable condition. In some examples, cardiac activity that appears benign is quantified and a therapy confirmation threshold is adjusted according to how much apparently benign cardiac activity is seen after an initial identification of a treatable condition. In other examples, a new threshold is applied following the initial identification of treatable condition, removing historical data preceding the initial identification from subsequent therapy delivery decisions.
    Type: Application
    Filed: September 14, 2015
    Publication date: December 31, 2015
    Applicant: CAMERON HEALTH INC.
    Inventors: Jay A. Warren, Rick Sanghera, Venugopal Allavatam
  • Electrode insertion tools, lead assemblies, kits and methods for placement of cardiac device electrodes
    Patent number: 9216284
    Abstract: Insertion tools, lead assemblies, kits, and methods for placement of cardiac device electrodes. In some embodiments, an insertion tool having a proximal end and a distal, dissecting end includes a structure configured to receive or engage a structure on a lead assembly. Some embodiments include a lead assembly having an end including a structure configured for engaging the distal end of an associated insertion tool. Some embodiments include kits or systems including both an insertion tool and a lead assembly, each having a structure for engaging the other. In these embodiments, the engaging structures may take several forms including threads, small posts, circular or semi-circular receiving members, and/or a slot.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: December 22, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventor: Stephen A. P. O'Connor
  • APPARATUS AND METHOD FOR IDENTIFYING ATRIAL ARRHYTHMIA BY FAR-FIELD SENSING
    Publication number: 20150360040
    Abstract: In a subcutaneous implantable cardioverter/defibrillator, cardiac arrhythmias are detected to determine necessary therapeutic action. Cardiac signal information is sensed from far field electrodes implanted in a patient. The sensed cardiac signal information is then amplified and filtered. Parameters such as rate, QRS pulse width, cardiac QRS slew rate, amplitude and stability measures of these parameters from the filtered cardiac signal information are measured, processed and integrated to determine if the cardioverter/defibrillator needs to initiate therapeutic action.
    Type: Application
    Filed: August 27, 2015
    Publication date: December 17, 2015
    Applicant: CAMERON HEALTH, INC.
    Inventors: Gust H. Bardy, William J. Rissmann, Alan H. Ostroff, Paul J. Erlinger, Venugopal Allavatam
  • SENSING VECTOR SELECTION IN A CARDIAC STIMULUS DEVICE WITH POSTURAL ASSESSMENT
    Publication number: 20150328470
    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: Application
    Filed: July 29, 2015
    Publication date: November 19, 2015
    Applicant: CAMERON HEALTH, INC.
    Inventors: Rick Sanghera, Venugopal Allavatam
  • Robust rate calculation in an implantable cardiac stimulus or monitoring device
    Patent number: 9179853
    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 28, 2014
    Date of Patent: November 10, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Rick Sanghera, Venugopal Allavatam, Jay A. Warren, Mark R. Schroeder
  • Methods and devices for accurately classifying cardiac activity
    Patent number: 9162074
    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: November 24, 2014
    Date of Patent: October 20, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Venugopal Allavatam, Surekha Palreddy, Rick Sanghera, Jay A. Warren
  • Method for discriminating between ventricular and supraventricular arrhythmias
    Patent number: 9155485
    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: December 17, 2014
    Date of Patent: October 13, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Alan H. Ostroff, Jay A. Warren, Gust H. Bardy
  • Adaptive confirmation of treatable arrhythmia in implantable cardiac stimulus devices
    Patent number: 9149637
    Abstract: Methods and devices for adjusting therapy delivery decisions in an implantable cardiac stimulus device by observing cardiac activity following an initial identification of a treatable condition. In some examples, cardiac activity that appears benign is quantified and a therapy confirmation threshold is adjusted according to how much apparently benign cardiac activity is seen after an initial identification of a treatable condition. In other examples, a new threshold is applied following the initial identification of treatable condition, removing historical data preceding the initial identification from subsequent therapy delivery decisions.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: October 6, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Jay A. Warren, Rick Sanghera, Venugopal Allavatam
  • Methods and devices implementing dual criteria for arrhythmia detection
    Patent number: 9149645
    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: Grant
    Filed: March 10, 2014
    Date of Patent: October 6, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Rick Sanghera, Venugopal Allavatam
  • Post-shock treatment in a subcutaneous device
    Patent number: 9144683
    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-bradycardia pacing energy to the heart, comprising a capacitor subsystem for storing the anti-bradycardia pacing energy for delivery to the patient's heart; and a battery subsystem electrically coupled to the capacitor subsystem for providing the anti-bradycardia pacing energy to the capacitor subsystem.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: September 29, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Gust H. Bardy, Riccardo Cappato, William J. Rissmann
  • Apparatus and method for identifying atrial arrhythmia by far-field sensing
    Patent number: 9138589
    Abstract: In a subcutaneous implantable cardioverter/defibrillator, cardiac arrhythmias are detected to determine necessary therapeutic action. Cardiac signal information is sensed from far field electrodes implanted in a patient. The sensed cardiac signal information is then amplified and filtered. Parameters such as rate, QRS pulse width, cardiac QRS slew rate, amplitude and stability measures of these parameters from the filtered cardiac signal information are measured, processed and integrated to determine if the cardioverter/defibrillator needs to initiate therapeutic action.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: September 22, 2015
    Assignee: CAMERON HEALTH, INC.
    Inventors: Gust H. Bardy, William J. Rissmann, Alan H. Ostroff, Paul J. Erlinger, Venugopal Allavatam
  • IMPLANTABLE MEDICAL DEVICE HAVING A CONDUCTIVE COATING
    Publication number: 20150251000
    Abstract: An implantable medical device including a coating and associated method are disclosed. The implantable medical device can include a metallic housing. An adhesion layer formed on at least a portion of the metallic housing. A titanium nitride base layer formed on at least a portion of the adhesion layer. An intermediate layer formed on at least a portion of the titanium nitride base layer, and a titanium nitride top layer formed on at least a portion of the intermediate layer.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Applicant: CAMERON HEALTH, INC.
    Inventors: Michael J. Kane, Matthew P. Jones, Sverre Gropen