Class / Patent application number | Description | Number of patent applications / Date published |
607015000 | Selecting plural stimulation patterns | 9 |
20090062877 | Multisite heart pacing with adjustable number of pacing sites for terminating high frequency cardiac arrhythmias - A multisite heart pacing with adjustable number of pacing sites is realized by using only one lead directly connected to the heart. The number and locations of pacing sites is regulated by increasing the amplitude of pacing pulses delivered by the electric field, and by changing orientation of the electric field. | 03-05-2009 |
20090157135 | BACKUP PACING DURING TACHYCARDIA - A tachycardia episode can be detected in a subject using a processor, and whether the tachycardia episode is a sustained tachycardia episode can be determined during a period of time. A backup pacing can be provided in response to the detecting tachycardia episode and during the period of time, and a tachycardia therapy can be provided to the subject if the tachycardia episode is determined to be a sustained tachycardia episode. | 06-18-2009 |
20090270936 | IMPLANTABLE MEDICAL DEVICE WITH COORDINATED VENTRICULAR OVERDRIVE AND TRIGGER MODE PACING - A method and system are provided for providing coordinated ventricular overdrive and triggered pacing through an implantable system. A lead senses signals from a heart to obtain sensed signals representative of tachycardia occurring in at least one chamber of the heart. The lead includes an electrode. A control module detects tachycardia in at least one chamber of the heart and based thereon, initiates an overdrive pacing mode and a triggered pacing mode. The control module controls delivery of overdrive pacing pulses through the electrode to a first chamber of the heart in accordance with the overdrive pacing mode. The control module controls delivery of a triggered pacing pulse through the electrode to the first chamber of the heart in accordance with the triggered pacing mode. The triggered pacing pulse is temporally interspersed with the overdrive pacing pulses. The triggered pacing pulse may be delivered at a time that is independent of, and unrelated to, the timing of the overdrive pacing pulses. | 10-29-2009 |
20100305639 | METHOD AND APPARATUS FOR USING ATRIAL DISCRIMINATION ALGORITHMS TO DETERMINE OPTIMAL PACING THERAPY AND THERAPY TIMING - A system and method which employs atrial discrimination algorithms to distinguish between different atrial arrhythmias occurring in a patient for selecting an optimal pacing therapy corresponding to the type of arrhythmia identified. In response to the detection of an atrial rate above the atrial tracking rate, discrimination criteria are applied to a detected atrial activity signal to distinguish between different types of supraventricular tachycardia, such as fast atrial flutter and other atrial flutter at a relatively slower rate, which may be occurring in the patient. The pacer is controlled to provide pacing therapy to a heart in a manner corresponding to the type of supraventricular tachycardia identified. The output of an atrial discrimination algorithm may be tracked and the trend thereof used to improve therapy timing. Various embodiments are disclosed herein. | 12-02-2010 |
20110029033 | TERMINATING TACHYARRHYTHMIAS - This disclosure is directed to techniques for treating tachyarrhythmias, such as atrial or ventricular fibrillation, in which a number of electrodes are employed to deliver electrical stimulation to a patient's heart in a manner designed to terminate the tachyarrhythmia episode. | 02-03-2011 |
20110077705 | PACE DISCRIMINATION OF TACHYCARDIA USING ATRIAL-VENTRICULAR PACING - A cardiac medical device and associated method control delivery of dual chamber burst pacing pulses in response to detecting tachycardia. In one embodiment, a single chamber pacing pulse is delivered in response to detecting a tachycardia. Dual chamber pacing pulses are delivered subsequent to the single chamber pacing pulse. An intrinsic depolarization is sensed subsequent to delivering the dual chamber pacing pulses. The tachycardia episode is classified in response to the sensed intrinsic depolarization. | 03-31-2011 |
20110196440 | ADAPTIVE DETERMINATION OF PATIENT SPECIFIC OPTIMAL AV DELAY DURING ELEVATED HEART RATES BASED ON CARDIAC OUTPUT MEASUREMENTS - Adaptively creating a table of optimal, patient-specific atrioventricular (AV) delays for a an implantable medical device (IMD) begins as the IMD detects the patient entering a target heart rates within a defined range of elevated heart rates. On detection, the device begins testing AV delays by pacing the heart at a number of different AV delays. The IMD selects the optimal AV delay based on a comparison of measurements of cardiac output obtained during each delay's test pacing period. The optimal AV delay corresponds to the one which resulted in the highest cardiac output. The device selects this optimal AV delay and stores it in an AV delay table on the device. The process continues as the device detects the patient entering the other target heart rates in order to complete the table. | 08-11-2011 |
20120095520 | SEQUENTIAL DISCRIMINATION APPROACH FOR DETECTING TREATABLE CARDIAC RHYTHMS - A system and method for use in a medical device for discriminating cardiac events establishes population-based thresholds corresponding to cardiac signal morphology metrics for discriminating between a first cardiac event and a second cardiac event. A population-based threshold criterion for discriminating cardiac events is established. The population-based threshold criterion is applied to a cardiac signal segment and the segment is classified if the criterion is satisfied. A patient-specific threshold is established in response to the sensed cardiac signal segment not being classified after applying the population-based threshold criterion. The sensed signal segment is classified in response to the patient-specific threshold comparison. | 04-19-2012 |
20140135864 | IMPLANTABLE NEUROSTIMULATOR-IMPLEMENTED METHOD FOR ENHANCING HEART FAILURE PATIENT AWAKENING THROUGH VAGUS NERVE STIMULATION - An implantable neurostimulator-implemented method for managing tachyarrhythmias upon a patient's awakening from sleep through vagus nerve stimulation is provided. An implantable neurostimulator, including a pulse generator, is configured to deliver electrical therapeutic stimulation in a manner that results in creation and propagation (in both afferent and efferent directions) of action potentials within neuronal fibers comprising the cervical vagus nerve of a patient. Operating modes of the pulse generator are stored. An enhanced dose of the electrical therapeutic stimulation is parametrically defined and tuned to prevent initiation of or disrupt tachyarrhythmia upon the patient's awakening from a sleep state through at least one of continuously-cycling, intermittent and periodic ON-OFF cycles of electrical pulses. Other operating modes, including a maintenance dose and a restorative dose are defined. The patient's physiological state is monitored via at least one sensor to detect the patient's awakening, which activates the delivery of the enhanced dose. | 05-15-2014 |