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。