Patents Assigned to Cameron Health, Inc.
  • Electromagnetic interference shielding in an implantable medical device
    Patent number: 8538531
    Abstract: EMI shields for use in implantable medical devices that include inner and outer metal layers separated by a dielectric layer. When assembled as medical devices, the outer metal layer of an illustrative EMI shield is placed into electrical contact with a conductive inner surface of an associated canister for an implantable medical device.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: September 17, 2013
    Assignee: Cameron Health, Inc.
    Inventor: Timothy A. Fonte
  • Implantable Medical Devices Using Heuristic Filtering in Cardiac Event Detection
    Publication number: 20130190634
    Abstract: Methods for performing cardiac signal analysis in an implanted medical device, and devices configured to perform illustrative methods of cardiac signal analysis. A cardiac signal is captured by an implanted device using implanted electrodes and, during at least certain conditions, the cardiac signal undergoes heuristic filtering. In some embodiments, heuristic filtering is achieved by modifying a signal or value that is used as an indicator of received signal amplitude. In an illustrative example, the heuristic filtering includes periodically incrementing or decrementing the signal or value toward a desired quiescent point, where the heuristic filter period is significantly longer than the sampling period for the signal itself. In another illustrative example, the heuristic filter frequency can be adjusted dynamically to keep the signal average near the desired quiescent point.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 25, 2013
    Applicant: Cameron Health, Inc.
    Inventor: Cameron Health, Inc.
  • Data manipulation following delivery of a cardiac stimulus in an implantable cardiac stimulus device
    Patent number: 8494630
    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: January 16, 2009
    Date of Patent: July 23, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Surekha Palreddy, Venugopal Allavatam
  • CURRENT WAVEFORMS FOR ANTI-TACHYCARDIA PACING FOR A SUBCUTANEOUS IMPLANTABLE CARDIOVERTER-DEFIBRILLATOR
    Publication number: 20130184802
    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: Application
    Filed: March 5, 2013
    Publication date: July 18, 2013
    Applicant: Cameron Health, Inc.
    Inventor: Cameron Health, Inc.
  • Electrode spacing in a subcutaneous implantable cardiac stimulus device
    Patent number: 8483841
    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: December 11, 2009
    Date of Patent: July 9, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Rick Sanghera, Eric F. King, Don E. Scheck, Abdulkader O. Sudam, Jay A. Warren
  • Sensing vector selection in a cardiac stimulus device with postural assessment
    Patent number: 8483843
    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 7, 2012
    Date of Patent: July 9, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Rick Sanghera, Venugopal Allavatam
  • SUBCUTANEOUS DEFIBRILLATOR IMPLANTATION
    Publication number: 20130150942
    Abstract: A subcutaneous cardiac device includes a subcutaneous electrode and a housing coupled to the subcutaneous electrode by a lead with a lead wire. The subcutaneous electrode is adapted to be implanted in a frontal region of the patient so as to overlap a portion of the patient's heart. The subcutaneous electrode is configured for therapy delivery in combination with one or both of the housing or a second subcutaneous electrode.
    Type: Application
    Filed: February 12, 2013
    Publication date: June 13, 2013
    Applicant: Cameron Health, Inc.
    Inventor: Cameron Health, Inc.
  • Apparatus and method for identifying atrial arrhythmia by far-field sensing
    Patent number: 8457737
    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: September 13, 2011
    Date of Patent: June 4, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Gust H. Bardy, William J. Rissmann, Alan H. Ostroff, Paul J. Erlinger, Venugopal Allavatam
  • Method and Devices for Performing Cardiac Waveform Appraisal
    Publication number: 20130138169
    Abstract: Implementations of various technologies described herein are directed toward a sensing architecture for use in cardiac rhythm management devices. The sensing architecture may provide a method and means for certifying detected events by the cardiac rhythm management device. Moreover, by exploiting the enhanced capability to accurately identifying only those sensed events that are desirable, and preventing the use of events marked as suspect, the sensing architecture can better discriminate between rhythms appropriate for device therapy and those that are not.
    Type: Application
    Filed: December 27, 2012
    Publication date: May 30, 2013
    Applicant: Cameron Health, Inc.
    Inventor: Cameron Health, Inc.
  • Subcutaneous implantable cardioverter-defibrillator placement methods
    Patent number: 8447398
    Abstract: A subcutaneous cardiac device includes two electrodes and a stimulator that generates a pulse to the electrodes. The electrodes are implanted between the skin and the rib cage of the patient and are adapted to generate an electric field corresponding to the pulse, the electric field having a substantially uniform voltage gradient as it passes through the heart. The shapes, sizes, positions and structures of the electrodes are selected to optimize the voltage gradient of the electric field, and to minimize the energy dissipated by the electric field outside the heart. More specifically, the electrodes have contact surfaces that contact the patient tissues, said contact surfaces having a total contact area of less than 100 cm2. In one embodiment, one or both electrodes are physically separated from the stimulator. In another embodiment, a unitary housing holds the both electrodes and the stimulator.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: May 21, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Gust H. Bardy, Riccardo Cappato, Alan H. Ostroff, William J. Rissmann, Gary H. Sanders
  • Methods and devices for identifying overdetection of cardiac signals
    Patent number: 8437838
    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, sensed 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.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: May 7, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Jay A. Warren, Venugopal Allavatam, Rick Sanghera, Surekha Palreddy
  • Methods and implantable devices for inducing fibrillation by alternating constant current
    Patent number: 8423136
    Abstract: Devices configured for and methods for inducing fibrillation in a patient using a controlled current AC signal applied via electrodes of an implanted ICD. In some embodiments, the AC signal is applied as a series of alternating constant current pulses. Some embodiments make use of a specialized H-bridge circuit for applying the AC signal. A low-side current controlling portion of an ICD's circuitry may make up part of the specialized H-bridge circuit. Further embodiments include devices embodying these methods.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: April 16, 2013
    Assignee: Cameron Health, Inc.
    Inventor: Alan H. Ostroff
  • Nontransvenous and nonepicardial methods of cardiac treatment and stimulus
    Patent number: 8412320
    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: August 17, 2005
    Date of Patent: April 2, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Alan H. Ostroff, William J. Rissmann, Gary P. Mezack, Gust H. Bardy
  • Subcutaneous defibrillator implantation with right-side active canister
    Patent number: 8386037
    Abstract: A subcutaneous cardiac device includes a subcutaneous electrode and a housing coupled to the subcutaneous electrode by a lead with a lead wire. The subcutaneous electrode is adapted to be implanted in a frontal region of the patient so as to overlap a portion of the patient's heart.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: February 26, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Alan H. Ostroff, Paul Erlinger, Gust H. Bardy
  • Subcutaneous Electrode with Improved Contact Shape for Transthoracic Conduction
    Publication number: 20130030511
    Abstract: Lead electrode assemblies for use with an implantable cardioverter-defibrillator subcutaneously implanted outside the ribcage between the third and twelfth ribs comprising the electrode. Example assemblies include appendages of various types for use during implantation including fins, pinholes, loops, tubes, openings and other means for attachment to an implant tool. Several embodiments include first and second faces on the electrodes such that a first face is configured to be implanted facing the ribcage of the patient and the second face has the appendage.
    Type: Application
    Filed: October 6, 2012
    Publication date: January 31, 2013
    Applicant: Cameron Health, Inc.
    Inventor: Cameron Health, Inc.
  • Implantable medical devices using heuristic filtering in cardiac event detection
    Patent number: 8364251
    Abstract: Methods for performing cardiac signal analysis in an implanted medical device, and devices configured to perform illustrative methods of cardiac signal analysis. A cardiac signal is captured by an implanted device using implanted electrodes and, during at least certain conditions, the cardiac signal undergoes heuristic filtering. In some embodiments, heuristic filtering is achieved by modifying a signal or value that is used as an indicator of received signal amplitude. In an illustrative example, the heuristic filtering includes periodically incrementing or decrementing the signal or value toward a desired quiescent point, where the heuristic filter period is significantly longer than the sampling period for the signal itself. In another illustrative example, the heuristic filter frequency can be adjusted dynamically to keep the signal average near the desired quiescent point.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: January 29, 2013
    Assignee: Cameron Health, Inc.
    Inventor: James William Phillips
  • Method and devices for performing cardiac waveform appraisal
    Patent number: 8346357
    Abstract: Implementations of various technologies described herein are directed toward a sensing architecture for use in cardiac rhythm management devices. The sensing architecture may provide a method and means for certifying detected events by the cardiac rhythm management device. Moreover, by exploiting the enhanced capability to accurately identifying only those sensed events that are desirable, and preventing the use of events marked as suspect, the sensing architecture can better discriminate between rhythms appropriate for device therapy and those that are not.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: January 1, 2013
    Assignee: Cameron Health, Inc.
    Inventors: Surekha Palreddy, Jay A. Warren, James W. Phillips
  • Subcutaneous electrode with improved contact shape for transthoracic conduction
    Patent number: 8285375
    Abstract: One embodiment of the present invention provides a lead electrode assembly for use with an implantable cardioverter-defibrillator subcutaneously implanted outside the ribcage between the third and twelfth ribs comprising the electrode.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: October 9, 2012
    Assignee: Cameron Health, Inc.
    Inventors: Gust H. Bardy, Riccardo Cappato, William J. Rissmann, Gary H. Sanders
  • Methods and devices for accurately classifying cardiac activity
    Patent number: 8265749
    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 14, 2009
    Date of Patent: September 11, 2012
    Assignee: Cameron Health, Inc.
    Inventors: Venugopal Allavatam, Surekha Palreddy, Rick Sanghera, Jay A. Warren
  • Methods and devices for identifying overdetection of cardiac signals
    Patent number: 8265737
    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, sensed 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.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: September 11, 2012
    Assignee: Cameron Health, Inc.
    Inventors: Jay A. Warren, Venugopal Allavatam, Rick Sanghera, Surekha Palreddy