intracardiac catheter
一旦导管进入心脏，心脏病医生即可将一种特制的叫做间隔堵闭器的装置送入缺损内，阻止血流经过。
Once the catheter is in the heart, the cardiologist will pass a special device, called a septal occluder, into the open ASD preventing blood from flowing through it.
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