A catheter fragment with inaccessible ends can be retrieved using the well-known two-step method: making a free end with a pigtail catheter and seizing it with a snare catheter. Here we propose an easier and faster modification, named the “pigtail through snare” technique. A 61-year-old female patient underwent removal of a central venous catheter fragment migrating to the right atrium. Both ends located in the right atrial appendage and left hepatic vein were inaccessible. Initially, a snare loop was opened in the inferior vena cava and a pigtail catheter was advanced through the snare loop to hook the catheter fragment. The free end was created by pulling the pigtail catheter, dragged automatically into the snare loop, grasped, and retrieved immediately. By passing the pigtail catheter through the snare loop in advance, the snaring maneuver becomes easy and fast in retrieving the catheter fragment with inaccessible ends.

中文翻译：

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“通过圈套器穿线”技术：一种简便，快速的方法，可取回末端难以接近的导管碎片

末端不易接近的导管碎片可以使用众所周知的两步法进行检索：用尾纤导管做一个自由端，用圈套器导管抓住它。在这里，我们提出了一种更简单，更快速的修改方法，称为“通过网罗的辫子”技术。一名61岁的女性患者接受了移至右心房的中央静脉导管碎片的切除。位于右心耳和左肝静脉的两端均无法接近。最初，在下腔静脉中打开圈套器环，并将猪尾形导管穿过圈套器环以钩住导管碎片。自由端是通过拉出尾纤导管而产生的，将其自动拖入圈套器环中，抓住并立即取回。预先将尾纤导管穿过圈套环，