Abstract
We report a case of subacute myocardial infarction thrombus aspiration using extension catheters. The presence of refractory thrombus was observed in all patients during coronary angiography, and favorable outcomes were achieved through the use of an extended catheter for thrombus extraction. In cases involving subacute or refractory thrombus, the efficacy of traditional thrombus aspiration catheters may be limited, necessitating the use of an extension catheter for effective thrombus removal.