{"title":"Experimental Study of L-shaped Silastic Stents for Microvascular Anastomosis.","authors":"Yoshiyuki Hara","doi":"10.1142/S2424835523500686","DOIUrl":null,"url":null,"abstract":"<p><p><b>Background:</b> The stent technique of microvascular anastomosis, in which a stent is placed in the vessel before creating the anastomosis, is useful for accurate anastomosis formation, but the manipulation involved in stent insertion into the vessel and withdrawal from the anastomosis still poses problems. In this study, a silastic stent containing a copper wire-bent in an L-shape was designed and its utility in microvascular anastomosis was investigated in rats. <b>Methods:</b> Eighty end-to-end anastomosis procedures of the right femoral artery and vein were performed in rats. Anastomoses were conducted either by the conventional method (Method C) or using L-shaped silastic stents (Method L), with anastomosis condition assessed after one side had been sutured, at the completion of vascular anastomosis and on postoperative day 7. <b>Results:</b> After one side had been sutured, suture errors were observed in three veins with Method C. At the completion of vascular anastomosis, impaired blood flow was observed in two arteries and two veins with Method C, and in one artery with Method L. On postoperative day 7, impaired blood flow was observed in one artery and one vein with Method C and in one vein with Method L. <b>Conclusions:</b> The use of L-shaped silastic stents preserved the advantages of the stent technique while simplifying stent manipulation. This technique may help reduce the risk of intimal trauma.</p>","PeriodicalId":51689,"journal":{"name":"Journal of Hand Surgery-Asian-Pacific Volume","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hand Surgery-Asian-Pacific Volume","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1142/S2424835523500686","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/12/5 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"SURGERY","Score":null,"Total":0}
引用次数: 0
Abstract
Background: The stent technique of microvascular anastomosis, in which a stent is placed in the vessel before creating the anastomosis, is useful for accurate anastomosis formation, but the manipulation involved in stent insertion into the vessel and withdrawal from the anastomosis still poses problems. In this study, a silastic stent containing a copper wire-bent in an L-shape was designed and its utility in microvascular anastomosis was investigated in rats. Methods: Eighty end-to-end anastomosis procedures of the right femoral artery and vein were performed in rats. Anastomoses were conducted either by the conventional method (Method C) or using L-shaped silastic stents (Method L), with anastomosis condition assessed after one side had been sutured, at the completion of vascular anastomosis and on postoperative day 7. Results: After one side had been sutured, suture errors were observed in three veins with Method C. At the completion of vascular anastomosis, impaired blood flow was observed in two arteries and two veins with Method C, and in one artery with Method L. On postoperative day 7, impaired blood flow was observed in one artery and one vein with Method C and in one vein with Method L. Conclusions: The use of L-shaped silastic stents preserved the advantages of the stent technique while simplifying stent manipulation. This technique may help reduce the risk of intimal trauma.
背景:微血管吻合术中的支架技术,即在吻合前将支架放入血管中,有助于准确形成吻合,但支架插入血管和从吻合处抽出时的操作仍存在问题。本研究设计了一种含有弯成 L 形的铜丝的硅胶支架,并在大鼠身上研究了其在微血管吻合中的实用性。方法:在大鼠身上进行了 80 例右股动脉和静脉端对端吻合术。吻合采用传统方法(方法 C)或 L 型硅胶支架(方法 L),在一侧缝合后、血管吻合完成时和术后第 7 天评估吻合情况。结果术后第 7 天,使用 C 方法的一条动脉和一条静脉以及使用 L 方法的一条静脉的血流均出现障碍:使用 L 型硅胶支架保留了支架技术的优点,同时简化了支架操作。这种技术有助于降低内膜创伤的风险。