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人的心脏每天跳动100000次,泵出6000升血液,穿越20000公里的动静脉,从而维持身体的血液循环。从出生后的那一刻起,它便24小时不间断地工作,为全身输送氧气和养分,是人体不知疲倦的“马达”。这个“马达” 自身有一个控制装置--窦房结,它位于右心房上部。窦房结接收大脑及其他中枢神经的信号从而控制心脏搏动以满足身体各部分的需要。当窦房结及电传导系统出现问题导致心跳过慢时,就需要一个助手来帮助它恢复正常的跳动,这个助手的名字就叫做人工起搏器。 人工起搏器是用一定形式的脉冲电流刺激心肌,使心脏按一定的频率有效地收缩与舒张,维持全身正常的血液循环的装置。它由脉冲发生器、电极及其
The human heart beats 100000 times a day, pumping 6000 liters of blood, through 20000 kilometers of arteries and veins, so as to maintain the body’s blood circulation. From the moment of birth, it operates 24 hours a day, delivering oxygen and nutrients throughout the body and is the tireless “motor” of the body. The “motor” itself has a control device - the sinus node, which is located in the upper part of the right atrium. The sinoatrial node receives signals from the brain and other central nerves to control heart beat to meet the needs of various parts of the body. When the sinus node and electrical conduction system problems lead to slow heartbeat, you need an assistant to help it restore normal beating, the name of this assistant is called artificial pacemaker. Artificial pacemaker is to use certain forms of pulse current to stimulate the myocardium, the heart at a certain frequency effective contraction and relaxation, to maintain normal blood circulation device. It consists of a pulse generator, electrodes and their