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Surgery: Light, Thermal, And Electrical Application > Light, Thermal, And Electrical Application > Electrical Therapeutic Systems > Heart Rate Regulating (e.g., Pacing) > Testing Or Monitoring Pacer Function > Measuring Pacing, Threshold, Capture Margin, Or Contact Impedance Measuring Pacing, Threshold, Capture Margin, Or Contact ImpedanceMeasuring Pacing, Threshold, Capture Margin, Or Contact Impedance patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/30/06 - 20060271122 - Retrograde atrial sensing for identifying sub-threshold atrial pacing Methods and systems for delivering a pacing pulse to an atrium during a cardiac cycle. A retrograde P-wave may be identified during the cardiac cycle, indicative of sub-threshold atrial pacing. Delivery of the pacing pulse to the atrium may be adjusted in a subsequent cardiac cycle in response to identifying ... 11/09/06 - 20060253164 - Automatic capture verification using electrocardiograms sensed from multiple implanted electrodes Cardiac monitoring and/or stimulation methods and systems that provide one or more of monitoring, diagnosing, defibrillation, and pacing. Cardiac signal separation is employed for automatic capture verification using cardiac activation sequence information. Devices and methods sense composite cardiac signals using implantable electrodes. A source separation is performed using the composite ... 11/02/06 - 20060247708 - Cardiac pacemaker with table-based pacing mode implementation A device and method for implementing a bradycardia pacing mode are disclosed which is mostly hardware-based but still allows the flexibility for making major changes in brady behavior normally found only in firmware-based implementations. The brady behavior of the device is encapsulated by a table in an area of RAM ... 11/02/06 - 20060247707 - Cardiac signal template generation using waveform clustering Cardiac devices and methods using cardiac waveform clustering for template generation are described. A method of characterizing a cardiac response involves delivering pacing pulses to heart, the pulses having an energy greater than a capture threshold. Cardiac signals are sensed following the pulses. Cardiac signal characteristics, waveforms, and/or features are ... 10/26/06 - 20060241711 - Implantable cardiac device and method for reduced phrenic nerve stimulation Methods and devices for reducing phrenic nerve stimulation of cardiac pacing systems involve delivering a pacing pulse to a ventricle of a heart. A transthoracic impedance signal is sensed, and a deviation in the signal resulting from the pacing pulse may be used to determine phrenic nerve stimulation. Methods may ... 10/26/06 - 20060241710 - System and method for capture management An implantable medical device (IMD) includes both evoked response and algorithmic based threshold testing methodologies. The leads used with the IMD are evaluated to determine whether they are high or low polarization. The evoked response methodology is only utilized if the leads are low polarization. ... 10/05/06 - 20060224205 - System and method for remote pacing threshold assessment A cardiac rhythm management system includes an implantable medical device capable of delivering cardiac therapy and sensing an EGM. The implantable medical device undergoes threshold testing and transmits testing data to a computer via a remote monitor. ... 09/21/06 - 20060212084 - Cardiac rhythm pacing rate selection for automatic capture threshold testing Cardiac devices and methods that select pacing rates for automatic threshold tests based on a patient's hemodynamic need. A sensor-indicated pacing rate corresponding to a patient's hemodynamic need is determined. A test pacing rate is selected from either the sensor-indicated rate or another rate. Capture threshold testing is performed using ... 07/06/06 - 20060149328 - Lv threshold measurement and capture management The invention provides methods and apparatus for determining in a non-tracking pacing mode (e.g., DDI/R, VVI/R) whether a ventricular pacing stimulus is capturing a paced ventricle, including some or all of the following aspects. For example, increasing a ventricular pacing rate a nominal amount to an overdrive pacing rate higher ... 06/29/06 - 20060142814 - Pacing method A method for delivering physiological pacing includes selecting an electrode implant site within an interventricular septal zone, which is in proximity to the bundle of His where pacing stimulation results in a rhythm breaking out at an intrinsic location, and wherein a ratio of sensed P-wave amplitude to sensed R-wave ... 06/22/06 - 20060136003 - Multi chamber capture detection The invention relates to a pacing system, in particular an implantable pacemaker for pacing multiple chambers of the heart and sensing signals from the myocardium of multiple chambers of the heart which will allow the verification of a cardiac evoked response resulting from a delivered charge to the heart tissue ... 06/15/06 - 20060129199 - Atrial retrograde management Methods and systems for classifying cardiac responses to pacing stimulation and/or preventing retrograde cardiac conduction are described. Following delivery of a pacing pulse to an atrium of the patient's heart during a cardiac cycle, the system senses in the atrium for a retrograde P-wave. The system classifies the atrial response ... 06/15/06 - 20060129198 - Baseline adaptation for cardiac pacing response classification Methods and devices for establishing and using baseline for cardiac pacing response detection are described. A baseline amplitude of the cardiac signal may be established using data acquired in an evaluation interval prior to the delivery of the pacing pulse. An amplitude of the cardiac signal following delivery of the ... 06/15/06 - 20060129197 - Atrial capture verification Methods and systems for classifying cardiac responses to pacing stimulation and/or preventing retrograde cardiac conduction are described. Following delivery of a pacing pulse to an atrium of the patient's heart during a cardiac cycle, the system senses in the atrium for a retrograde P-wave. The system classifies the atrial response ... 06/15/06 - 20060129196 - Capture verification with intrinsic response discrimination Approaches to automatically classifying a cardiac response to pacing involve discriminating between a captured response and non-capture with intrinsic activation. A capture detection system senses for morphological characteristics of a cardiac signal associated with the pacing pulse. The cardiac signal may be sensed using a defibrillation electrode during one or ... 06/08/06 - 20060122654 - Apparatus and method for determining the relative position and orientation of neurostimulation leads Interelectrode impedance or electric field potential measurements are used to determine the relative orientation of one lead to other leads in the spinal column or other body/tissue location. Interelectrode impedance is determined by measuring impedance vectors. The value of the impedance vector is due primarily to the electrode-electrolyte interface, and ... 06/08/06 - 20060122653 - Apparatus and method for determining the relative position and orientation of neurostimulation leads Interelectrode impedance or electric field potential measurements are used to determine the relative orientation of one lead to other leads in the spinal column or other body/tissue location. Interelectrode impedance is determined by measuring impedance vectors. The value of the impedance vector is due primarily to the electrode-electrolyte interface, and ... 04/06/06 - 20060074454 - Methods and systems for selection of cardiac pacing electrode configurations Methods and systems involve selecting lead configurations in a pulse generator capture verification system. Capture threshold data is collected from at least one alternative electrode configuration. The capture threshold data from the at least one alternative electrode configuration is compared with capture threshold data collected using a primary electrode configuration. ... 03/30/06 - 20060069411 - System and method for verifying capture in a multi-site pacemaker An apparatus and method for verifying capture by a selected pacing electrode in a multi-site pacemaker. A switching circuit switches the input of an evoked response sensing channel to an unselected electrode. A pacing pulse is then output by the selected electrode, and the presence or absence of capture is ... 02/02/06 - 20060025828 - Impedance measurement for an implantable device A method and an apparatus for determining an impedance experienced by a lead associated with the implantable device. A substantially constant current signal is provided through a first terminal and a second terminal of the lead. A voltage across the first and second terminals is measured. An impedance across the ... 10/27/05 - 20050240237 - Capture verification for cardiac resynchronization pacing optimization A system and method for automatically selecting among a plurality of pacing modes based upon capture detection. Patients suffering from heart failure may be optimally treated with different resynchronization pacing modes or configurations. By detecting whether capture is being achieved by a particular configuration or mode, a device is able ... 10/20/05 - 20050234520 - Apparatus and method for testing and adjusting a bipolar stimulation configuration A system and method for measuring the capture threshold of a bipolar lead in order to determine an appropriate value for the stimulus pulse energy to be used with the lead by a cardiac rhythm management device. An appropriate bipolar stimulating configuration can also be determined. The method is particularly ... 10/06/05 - 20050222632 - Device and method for the treatment of cardiac disorders The present invention shows the use of a conductive basket or mesh electrode to actively treat or passively extinguish cardiac arrhythmias. ... 07/21/05 - 20050159785 - Dynamic adjustment of capture management safety margin A cardiac stimulation system and associated capture management method are provided in which a safety factor, used in setting pacing pulse output energy, is automatically adjusted in response to the detection of indicators of a likely increase in pacing threshold. The method includes monitoring for increased pacing threshold indicators, which ... 06/23/05 - 20050137640 - Adaptive safety pacing Methods and systems involve adjusting an energy used for safety pacing based on the capture threshold. The safety pacing energy may be adjusted prior to a capture threshold test. During the capture threshold test, backup safety paces are delivered using the adjusted pacing energy. Following suspension of automatic capture verification, ... 06/23/05 - 20050137639 - Method and apparatus for actively determining a coupling interval corresponding to a cardiac vulnerable zone A method and apparatus for actively determining a coupling interval corresponding to a cardiac vulnerable zone associated with a therapy of an implantable medical device that includes a timing and control unit delivering, via electrodes of a plurality of electrodes, a first pulse train and a first pulse signal at ... 06/23/05 - 20050137638 - Automatic sensing vector selection for morphology-based capture verification A system and method for verifying capture of the heart by one or more pacing pulses using an electrogram morphology-based technique. Capture is determined by comparing an evoked response electrogram recorded during a paced cycle with a template waveform representing a paced cycle in which capture is achieved. The comparison ... ### FreshPatents.com Support |