He's saying that they're trying to create capture which is when they put a device on the outside of the chest that tries to capture the heart's beat and reset it and give it the proper rhythm.
他说他们正在尝试创造捕获，即当他们在胸部外侧放置一个设备，试图捕获心脏的跳动并重置它并赋予它正确的节奏。
Capture beat
原声例句
影视剧中的医学知识
英语百科
Fusion beat
A fusion beat occurs when electrical impulses from different sources act upon the same region of the heart at the same time. If it acts upon the ventricular chambers it is called a ventricular fusion beat, whereas colliding currents in the atrial chambers produce atrial fusion beats.