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Medicine
应用新型磁吻合技术 Suprahepatic 腔静脉重建大鼠原位肝移植模型的研究
应用新型磁吻合技术 Suprahepatic 腔静脉重建大鼠原位肝移植模型的研究
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A Rat Model of Orthotopic Liver Transplantation Using a Novel Magnetic Anastomosis Technique for Suprahepatic Vena Cava Reconstruction

应用新型磁吻合技术 Suprahepatic 腔静脉重建大鼠原位肝移植模型的研究

Full Text
10,556 Views
14:33 min
March 19, 2018

DOI: 10.3791/56933-v

Lifei Yang*1,2, Jianwen Lu*1,2,3, Yue Wang1,2,3, Mei Zhang1,2,3, Yuan Shi4, Shasha Wei1,2, Peng Liu1,2,3, Zheng Wu3, Yi Lv1,2,3, Rongqian Wu1,2

1Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering,First Affiliated Hospital, Xi'an Jiaotong University, 2Institute of Advanced Surgical Technology and Engineering,First Affiliated Hospital, Xi'an Jiaotong University, 3Department of Hepatobiliary Surgery,First Affiliated Hospital, Xi'an Jiaotong University, 4Organ Transplantation Center,Tianjin First Center Hospital

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Please note that some of the translations on this page are AI generated. Click here for the English version.

suprahepatic 腔静脉 (SHVC) 的重建仍是大鼠原位肝移植的难点。本文介绍了一种新型的磁吻合技术在大鼠 SHVC 重建中的应用。

该方案的总体目标是引入使用磁吻合技术进行肝上腔静脉重建的大鼠原位肝移植模型。这种方法可以帮助回答肝移植模型中关于肝上腔静脉重建的关键问题。该技术的主要优点是它减少了肝移植的肝无期,并大大提高了术后存活率。

首先,剃掉大鼠的整个腹部皮肤。用聚维酮碘溶液对相应的皮肤进行消毒。解剖肝脏周围的镰状韧带。

接下来,分离并结扎左下膈静脉。在前壁上做一个 V 形切口。将支架插入胆管管腔。

确保至少有一半的支架位于胆管外。用 6-0 丝缝合线固定支架。剪断缝合线的一端。

保留另一个在以后的吻合时保留。将肝下腔静脉分离至左肾静脉水平。解剖它,直到肝下腔静脉骨架化。

分离并结扎右肾上静脉。分离并结扎右肾静脉。通过阴茎背静脉使大鼠肝素化。

将一根 22 号导管插入左肾静脉下方的腹主动脉。进行开胸手术。使用微镊夹住胸主动脉。

通过主动脉中的导管灌注供体肝脏。横切肝上腔静脉。同时,切开右肾静脉下方的腔静脉,让灌注液流出肝脏。

解剖门静脉周围的结缔组织。结扎并分开幽门静脉。在脾静脉水平横切门静脉。

在左肾静脉水平横切肝下腔静脉。肝脏移植物制备在 4 摄氏度的盐水浴中进行。将肝下腔静脉插入其袖带,袖带延伸部分指向肝脏。

将肝下腔静脉的远端越过袖带体。用 6-0 丝缝合线固定边缘。在门静脉上重复上述步骤,将袖带连接到供体的门静脉。

通过镊子拉动隔膜,并修剪肝上腔静脉。将肝上腔静脉穿过磁环。Evert 肝上腔静脉的远端在环上。

并用 6-0 的丝缝线固定戒指。然后,去除肝脏周围多余的隔膜。放置 6-0 丝缝合线,并结扎胆总管。

将胆总管与第一肝门隔离。结扎并分裂右肾上腺静脉。将带子放在肝脏的肝上腔静脉中。

用微血管夹夹住右肾静脉上方的肝下腔静脉。在幽门静脉水平夹住门静脉。通过门静脉缓慢注射 2 毫升生理盐水,将血液冲出肝脏。

通过拉动之前放置的带子来向下拖动肝脏。用 Satinsky 夹夹住肝上腔静脉和隔膜的一部分。通过在肝脏上方横切肝上腔静脉来切除肝脏。

横切靠近实质的肝下腔静脉和肝门静脉。将受体剩余的肝上腔静脉插入磁环中。通过磁吸引将磁环固定在 Satinsky 夹具上。

将肝上腔静脉置于磁环上。将供体肝脏移植物原位放置,并用生理盐水溶液填充管腔,耦合磁环以实现血管结构。重建门静脉。

用生理盐水填充门静脉的管腔。将供体门静脉的袖带体插入受者的门静脉。并用圆周 6-0 真丝连字固定。

从肝上腔静脉中取出 Satinsky 夹。在胆总管的前壁上切开一个 V。将供体支架插入受体胆管的管腔中。

并用 6-0 丝圆周缝合线固定。将两条胆管上的缝合线拉在一起,并系好缝合线,使胆管彼此靠近。血管造影 2 周 POD 显示肝上腔静脉吻合口血流通畅。

移植后存活率高达 85% 至第 30 天 POD。磁性吻合技术使大鼠肝上腔静脉重建变得简单快捷。观看此视频后,无需高级显微外科技能,即可使用这种大鼠肝移植模型产生可靠且可重复的结果。

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