6 results about "Cardiac resynchronization" patented technology

The application discloses a patient classification method and device based on magnetic resonance parameters, equipment, medium, the method comprises the following steps: obtaining the target magnetic resonance parameter of the target patient; the target magnetic resonance parameter is selected from a plurality of preset magnetic resonance parameters based on the cardiac resynchronization label of the sample patient and the true result of the occurrence of the preset endpoint event; the target magnetic resonance parameter comprises a myocardial strain parameter, a gadolinium contrast agent delayed enhancement result and a left ventricular torsion parameter; the target classification tree is input into the target patient, and the target patient is classified by using the target classification tree, and the target classification result corresponding to the target patient is obtained; the target classification tree is obtained by extending the preset classification tree based on the cut-off value of each target magnetic resonance parameter and the influence of meeting each cut-off value on cardiac resynchronization; and the target classification result is output. The application can classify patients more accurately.

In some instances, a computing device can determine information corresponding to a data structure and indicating delays associated with atrial leads, left ventricular (LV) leads, and right ventricular (RV) leads, based on one or more input variables. The computing device can determine multiple personalized characteristics based on the information corresponding to the data structure. The computing device can receive multiple second sets of electrical measurements from multiple measuring electrodes, based on the multiple personalized characteristics, indicating a second electrical signal applied to the patient's heart. The computing device can use a first set of electrical measurements (e.g., raw measurements) and the multiple second sets of electrical measurements to determine a cardiac resynchronization index (CRI) value. The computing device can generate a graphical representation based on the populated data structure and display the graphical representation.

VfA cardiac therapy uses an implantable medical device or system. The implantable medical device includes a tissue-piercing electrode implanted in the basal and / or septal region of the left ventricular myocardium of the patient's heart from the triangle of Koch region of the right atrium through the right atrial endocardium and central fibrous body. The device may include a right atrial electrode, a right atrial motion detector, or both. The device may be implanted completely within the patient's heart or may use one or more leads to implant electrodes in the patient's heart. The device may be used to provide cardiac therapy, including single or multiple chamber pacing, atrioventricular synchronous pacing, asynchronous pacing, triggered pacing, cardiac resynchronization pacing, or tachycardia-related therapy. A separate medical device may be used to provide some functionality for cardiac therapy, such as sensing, pacing, or shock therapy.

The invention relates to a cardiac assist system comprising: - an intraventricularly implantable cardiac pump, - a processing unit, - at least one lead intended to be placed on an external wall of the heart. The processing unit includes a cardiac pump management function, a pacing function, and / or a defibrillation function. The processing unit is configured to: - perform cardiographic impedance measurements between said at least one lead and a metallic part of the cardiac pump in order to determine the following hemodynamic parameters: - a cardiac electromechanical delay from the cardiographic impedance measurements, - a blood filling time in the heart from the cardiographic impedance measurements, - a blood ejection time from the heart from the cardiographic impedance measurements, and - a change in right ventricular and / or left ventricular volume over time.Figure for the abridged version: Fig. 1.

Multiple external electrodes are used to monitor cardiac electrical activity from the patient's tissues. One or more cardiac measurements of the patient are generated based on the monitored electrical activity. If the patient has right bundle branch block, the one or more cardiac measurements are used based on a first global synchrony measure to determine whether the patient is a candidate for a cardiac resynchronization therapy (CRT) device. If the patient does not have right bundle branch block, the one or more cardiac measurements are used based on a second global synchrony measure to determine whether the patient is a candidate for a cardiac resynchronization therapy (CRT) device.