Patent application number | Description | Published |
20120004700 | IDENTIFICATION OF PACING SITE - An implantable medical device applies an electric signal over two electrodes and measures the resulting electric signal over a candidate pair of neighboring electrodes on a lead for a first heart ventricle or over a candidate electrode of the lead and a case electrode. An impedance signal is determined for each candidate pair or electrode based on the applied signal and the measured resulting signal. A time difference between start of contraction in a second ventricle and the timing of local myocardial contraction as identified from the impedance signal at the site of the candidate pair or electrode is determined for each candidate pair or electrode. An optimal pacing electrode is selected to correspond to one of the electrodes of the candidate pair having the largest time difference or the candidate electrode having largest time difference. | 01-05-2012 |
20120165692 | IMPLANTABLE MEDICAL DEVICE AND A METHOD FOR USE IN AN IMPLANTABLE MEDICAL DEVICE - An implantable medical device is connectable to at least three electrodes, and includes an immittance measurer that performs immittance measurements within the heart of a patient using at least three electrodes coupled to the device, with at least one of the electrodes is arranged in an atrium of the patient's heart. The medical device further includes an immittance converter that converts the immittance measurement values into individual near-field immittance values of the at least one electrode arranged in an atrium, an atrial dilatation detector that detects atrial dilatation based upon the individual near-field immittance values, and that determines atrial dilatation values in dependence thereon, and an atrial fibrillation risk determiner that determines an atrial fibrillation risk index based upon the atrial dilatation values. | 06-28-2012 |
20120221071 | METHOD AND SYSTEM FOR ADAPTING PACING SETTINGS OF A CARDIAC STIMULATOR - In an implantable medical device, such as a cardiac stimulator such as a pacemaker, and method for predicting patient responses to physical exertion, the patient response is monitored over time to evaluate disease progression and pacing therapies of cardiac stimulators are adapted based on the predicted patient response. A current cardiac status indicator for the patient is created indicating a response of the patient to an increased physical activity as a primarily heart rate response or as a primarily a stroke volume response. The pacing parameters of the cardiac stimulator can thereafter be adapted depending on the current cardiac status indicator, wherein the adapted pacing parameters include a first pacing setting if the current cardiac status indicator indicates a primarily heart rate response or a second pacing setting if the current cardiac status indicator indicates a primarily stroke volume response. | 08-30-2012 |
20130053915 | METHOD AND SYSTEM FOR DETERMINING PACING SETTINGS - Systems and methods for optimizing the stimulation of a heart of a patient are disclosed herein. The method comprises delivering pacing therapy to the patient according to a pacing therapy setting schedule, using specific pacing intervals via specific electrode configurations. Further, sinus rate values are recorded over at least one cardiac cycle at each pacing therapy setting and it is determined whether a sinus rate value satisfies predetermined measurement conditions, wherein sinus rate values are used for trending the sinus rate over time if the measurement conditions are satisfied. The accepted sinus rate values, i.e. values that satisfy the measurement conditions, are trended over time, wherein each trended sinus rate value is created based on recordings from at least one cardiac cycle. A preferred pacing therapy setting is determined to be the pacing therapy setting that provides a lowest sinus rate. | 02-28-2013 |
20130053917 | PHYSIOLOGICALLY ADAPTED CARDIAC RESYNCHRONIZATION THERAPY - An implantable medical device is connectable to an epicardial left ventricular lead having at least one epicardial electrode and a myocardium penetrating catheter with at least one endocardial electrode and present in a lumen of the lead. The device comprises a pulse generator controller that controls a ventricular pulse generator to generate pulses to be applied to the epicardial and endocardial electrodes. The controller uses an endocardial-to-epicardial time interval or epicardial-to-endocardial time interval to coordinate endocardial and epicardial activation of the left ventricle to thereby achieve cardiac pacing that closely mimics the natural electrical activation pattern of a healthy heart. | 02-28-2013 |
20130289641 | METHOD AND SYSTEM FOR OPTIMIZING CARDIAC PACING SETTINGS - The present invention relates generally to methods and systems for optimizing stimulation of a heart of a patient. Hemodynamical index signals reflecting a mechanical functioning of a heart of a patient are recorded at different hemodynamical states. Corresponding hemodynamical reference signals at corresponding hemodynamical states are recorded. At least one hemodynamical index parameter is extracted from the recorded hemodynamical index signals. The at least one hemodynamical index parameter is a measure of the mechanical functioning of the heart and a hemodynamical index model is created, wherein the hemodynamical index model is based on the at least one hemodynamical index parameter and a comparison between output results from the hemodynamical index model and corresponding hemodynamical reference signals. From this hemodynamical index model, a hemodynamical index can be derived, which then can be used in determining patient customized cardiac pacing settings of the cardiac stimulator. | 10-31-2013 |
20130289650 | Neuromodulation for Hypertension Control - Neuromodulation for controlling hypertension and other cardio-renal disorders of a patient is disclosed. A neuromodulation device is configured to be delivered to a patient's body and to apply an electric activation to decrease renal sympathetic hyperactivity of the patient based on monitored blood pressure of the patient, substantially without thermal energization of the patient's body by applying the electric activation. The electric activation may also depend on monitored blood volume of the patient. A feedback control module may be used to provide feedback control information for adjusting the electric activation based on the monitored blood pressure and volume of the patient. | 10-31-2013 |
20150352365 | METHOD AND SYSTEM FOR DETERMINING PACING SETTINGS - Systems and methods for optimizing the stimulation of a heart of a patient are disclosed herein. The method comprises delivering pacing therapy to the patient according to a pacing therapy setting schedule, using specific pacing intervals via specific electrode configurations. Further, sinus rate values are recorded over at least one cardiac cycle at each pacing therapy setting and it is determined whether a sinus rate value satisfies predetermined measurement conditions, wherein sinus rate values are used for trending the sinus rate over time if the measurement conditions are satisfied. The accepted sinus rate values, i.e. values that satisfy the measurement conditions, are trended over time, wherein each trended sinus rate value is created based on recordings from at least one cardiac cycle. A preferred pacing therapy setting is determined to be the pacing therapy setting that provides a lowest sinus rate. | 12-10-2015 |