The P-VCFs were implanted into the inferior vena cava (IVC) through healthy side femoral vein or right internal jugular vein under local anesthesia and DSA.

• 手术在DSA室局麻下进行，经健侧股静脉或右颈内静脉穿刺植入永久性腔静脉滤器于下腔静脉，捕捉血栓和预防肺血栓栓塞症。