公开(公告)号：US20230211154A1

公开(公告)日：2023-07-06

申请号：US17359283

申请日：2021-06-25

申请人： Japan Lifeline Co., Ltd.

发明人： Yasuhiro Kojima

IPC分类号： A61N1/05 ,  A61N1/39

CPC分类号： A61N1/0563 ,  A61N1/39 ,  A61B5/25

摘要： An intracardiac defibrillation catheter system includes a defibrillation catheter, a power supply device, and an electrocardiograph, in which an arithmetic processing unit of the power supply device sequentially senses an event estimated to be an R wave from an electrocardiogram input from the electrocardiograph, calculates a heart rate each time sensing is performed, and, when, after an event (Vn) is sensed and after an application execution switch is input, an event (Vn+m) is sensed, performs arithmetic processing so that a DC voltage is applied in synchronization with the event (Vn+m) only in a case where the event (Vn+m) is sensed after a lapse of a refractory period whose length corresponds to 50% of a reciprocal of a heart rate (An) at a sensing time point of the event (Vn), to control a DC power supply unit. The defibrillation catheter system can reliably avoid performing defibrillation in synchronization with a T wave without being affected by the level of the heart rate of a patient.