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»õ·Î °³¹ßµÈ ¸»Ãʵ¿¸Æ¿ë ÀÚ°¡ÆØ⼺ °³¹æÇü ´ÏƼ³î ½ºÅÙÆ®ÀÇ À¯È¿¼º ¹× ¾ÈÀü¼º Æò°¡: ¹Ì´ÏÇÇ±× ÀüÀÓ»ó½ÇÇè Efficacy and Safety of a Newly Developed Self-Expanding Open-Cell Type Nitinol Stent for Peripheral Arteries: A Preclinical Study in Minipigs

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±è¹Î¿í, ÀÌÀçȯ, À±Ã¢Áø, ÃÖ¿ø¼®, Çã¼¼¹ü, Á¤Áø¿í,
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±è¹Î¿í ( Kim Min-Uk ) 
Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Radiology

ÀÌÀçȯ ( Lee Jae-Hwan ) 
Seoul National University Bundang Hospital Department of Radiology
À±Ã¢Áø ( Yoon Chang-Jin ) 
Seoul National University Bundang Hospital Department of Radiology
ÃÖ¿ø¼® ( Choi Won-Seok ) 
Seoul National University Bundang Hospital Department of Radiology
Çã¼¼¹ü ( Hur Sae-Beom ) 
Seoul National University College of Medicine Seoul National University Hospital Department of Radiology
Á¤Áø¿í ( Chung Jin-Wook ) 
Seoul National University College of Medicine Seoul National University Hospital Department of Radiology

Abstract

¸ñÀû: ¾ã°í »õ·Î¿î ±¸Á¶·Î °³¹ßµÈ ¸»Ãʵ¿¸Æ¿ë ÀÚ°¡ÆØ⼺ °³¹æÇü ´ÏƼ³î ½ºÅÙÆ®ÀÇ À¯È¿¼º ¹× ¾ÈÀü¼ºÀ» ±âÁ¸¿¡ »ç¿ëÇÏ´Â ½ºÅÙÆ®¿Í ºñ±³ Æò°¡ÇÏ¿´´Ù.

´ë»ó°ú ¹æ¹ý: ¹Ì´ÏÇÇ±× 14¸¶¸®¸¦ ´ë»óÀ¸·Î ½ÇÇ豺°ú ´ëÁ¶±º ½ºÅÙÆ®¸¦ ¹«ÀÛÀ§¹èÁ¤ ÈÄ °¢ °³Ã¼ÀÇ Àå°ñµ¿¸Æ¿¡ ´ëĪÀûÀ¸·Î »ðÀÔÇÏ¿© 1°³¿ù(n = 5) ¹× 6°³¿ù(n = 9) ÃßÀû°üÂûÇÏ¿´´Ù. Ç÷°üÁ¶¿µ¼ú·Î Ç÷°ü Á÷°æ, Èı⠳»°­ ¼Õ½Ç ¹× ÇùÂø Á¤µµ¸¦ Æò°¡ÇÏ°í Á¶Á÷°èÃøÇÐÀûÀ¸·Î ³»Åº·ÂÃþ ¸éÀû, ³»°­ ¸éÀû, ½Å»ý ³»¸· ¸éÀû ¹× ÇùÂø Á¤µµ¸¦ ºÐ¼®ÇÏ¿´´Ù. ÃßÀû±â°£ Áß ¸ðµç ½ÇÇè °³Ã¼¿¡ ´ëÇÏ¿© ¸ÅÀÏ ÀÓ»óÀû Æò°¡ ¹× ½ÄÀÌ Á¤µµ¸¦ ÃßÀû°üÂûÇÏ¿´´Ù.

°á°ú: ¸ðµç °³Ã¼´Â ÃßÀû°üÂû ±â°£ Áß »ýÁ¸ÇÏ¿´À¸¸ç Áß´ëÇÑ À¯ÇØ ¹ÝÀÀÀ» º¸ÀÌÁö ¾Ê¾Ò´Ù. Ç÷°üÁ¶¿µ¼ú»ó 6°³¿ù ÃßÀû°üÂû±º¿¡¼­ ½ÇÇ豺ÀÇ ³»°­ Á÷°æÀÌ À¯ÀÇÇÏ°Ô ÄÇÀ¸¸ç(p = 0.014), Èı⠳»°­ ¼Õ½ÇÀÌ Àû¾ú°í(p = 0.019), ÇùÂø Á¤µµ°¡ ³·¾Ò´Ù(p = 0.014). Á¶Á÷ÇÐÀûÀ¸·Î 1°³¿ù ÃßÀû°üÂû±º¿¡¼­ ½ÇÇ豺ÀÌ ½Å»ý ³»¸· ¸éÀû ¹× ¸éÀû ÇùÂøÀÌ À¯ÀÇÇÏ°Ô ³·¾Ò´Ù(°¢, p = 0.008, p = 0.016). 6°³¿ù ÃßÀû°üÂû±º¿¡¼­´Â ½ÇÇ豺ÀÌ ´ëÁ¶±º¿¡ ºñÇÏ¿© ³»°­ ¸éÀûÀÌ À¯ÀÇÇÏ°Ô ³Ð¾úÀ¸¸ç(p = 0.040), ³»Åº·ÂÃþ ¸éÀû, ½Å»ý ³»¸· ¸éÀû ¹× ¸éÀû ÇùÂøÀÌ Åë°èÀûÀ¸·Î À¯ÀÇÇÏ°Ô ³·¾Ò´Ù(°¢, p = 0.004, p = 0.008, p = 0.014).

°á·Ð: »õ·Î °³¹ßµÈ ¸»ÃÊÇ÷°ü¿ë ÀÚ°¡ÆØ⼺ °³¹æÇü ´ÏƼ³î ½ºÅÙÆ®´Â ±âÁ¸¿¡ »ç¿ëÇÏ´Â ½ºÅÙÆ®¿Í ºñ±³ÇÏ¿© ¾ÈÀüÇÏ¸ç ½Å»ý ³»¸· Áõ½ÄÀÇ Á¤µµ°¡ Àû¾ú´Ù.

Purpose: To evaluate the safety and efficacy of the newly designed open-cell type self-expandable nitinol stent (NiTi-stent) for peripheral arteries.

Materials and Methods: Twenty-eight limbs of 14 minipigs were randomly assigned to the NiTi-stent group or conventional nitinol stent group. Stents were symmetrically implanted into the iliac arteries of each animal using carotid artery approach and were observed for 1 month (n = 5) and 6 months (n = 9). The angiographic lumen diameter (ALD), late lumen loss, angiographic stenosis, histomorphometric lumen area, neointimal area, and area stenosis were analyzed and compared between the groups.

Results: Stent migration, stent fracture, or thrombus formation were not observed in either group. At the 1-month follow-up, the neointimal area (p = 0.008) and area stenosis (p = 0.016) were significantly smaller in the NiTi-stent group than in the control group. At the 6-months follow-up, the NiTi-stent group showed significantly larger ALD (p = 0.014), less late lumen loss (p = 0.019), less angiographic stenosis (p = 0.014), larger lumen area (p = 0.040), and smaller neointimal area and area stenosis (p = 0.004 and p = 0.014, respectively) compared with the control group.

Conclusion: The NiTi-stent is as safe and effective as the conventional nitinol stent and induces less neointimal hyperplasia in a minipig iliac artery model.

Å°¿öµå

Stents; Swine; Nitinol; Iliac Artery

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