Core Viewpoint - A significant advancement in cardiac care has been achieved with the development of a micro self-powered pacemaker by a collaborative team from institutions including the University of Chinese Academy of Sciences, Tsinghua University, Peking University, and Fuwai Hospital, which utilizes the heart's own energy for operation [1] Group 1 - The new pacemaker is capsule-sized, significantly smaller than traditional devices, which are about the size of a matchbox [1] - It can be implanted minimally invasively through the femoral vein in the patient's leg, resulting in less trauma compared to conventional methods [1] - The device generates sufficient energy from the heartbeat, exceeding the energy threshold required for long-term operation of pacemakers, creating a symbiotic relationship with the heart [1]