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Transcatheter Mitral Valve Replacement
Journal of the American College of Cardiology ( IF 24.0 ) Pub Date : 2018-01-01 , DOI: 10.1016/j.jacc.2017.11.015
Josep Rodés-Cabau

SEE PAGE 12 S everal transcatheter mitral valve repair technologies have emerged over the last decade as an alternative to surgery for the treatment of mitral regurgitation (MR) in patients at high or prohibitive surgical risk (1). The MitraClip device (Abbott Vascular, Santa Clara, California), which consists of an edge-to-edge leaflet repair, is the most common transcatheter mitral valve repair technology used worldwide and the only one approved by the U.S. Food and Drug Administration to date. The use of the MitraClip device has been associated with high rates of significant reductions in MR, with a low incidence of safety issues (1,2). However, not all cases of MR are addressable by this therapy, and the rates of at least moderate residual MR are >10% (1,2). More recently, transcatheter mitral valve replacement (TMVR) has appeared as another less invasive alternative to surgery for treating MR (3). Up to 9 TMVR devices have already been used in humans, and at least 5 are in preclinical development (3). The Intrepid TMVR system (Medtronic plc, Dublin, Ireland) consists of a tri-leaflet bovine pericardial valve contained in a self-expanding nitinol frame with 3 leaflets of bovine pericardium that are inserted through the transapical approach by using a 35-F access sheath. The valve has an outer fixation frame (43, 46, or 50 mm) and an inner stent frame (27 mm), and valve anchoring is achieved by oversizing/radial force along with specific design features of the stent frame to fix the valve in the subannular space.

中文翻译:

经导管二尖瓣置换术

参见第 12 页 过去十年中出现了多种经导管二尖瓣修复技术,作为治疗手术风险高或手术风险高的患者的二尖瓣关闭不全 (MR) 的替代手术 (1)。MitraClip 装置(Abbott Vascular,Santa Clara,California)由边缘到边缘的瓣叶修复术组成,是全球最常用的经导管二尖瓣修复技术,也是迄今为止唯一获得美国食品和药物管理局批准的技术. MitraClip 装置的使用与 MR 显着降低的高比率相关,安全问题的发生率较低 (1,2)。然而,并非所有 MR 病例都可以通过这种疗法解决,并且至少中度残留 MR 的发生率 >10% (1,2)。最近,经导管二尖瓣置换术 (TMVR) 已成为治疗 MR 的另一种微创手术替代方案 (3)。多达 9 种 TMVR 设备已经用于人类,至少有 5 种处于临床前开发阶段 (3)。Intrepid TMVR 系统(Medtronic plc,都柏林,爱尔兰)由包含在自膨胀镍钛诺框架中的三叶牛心包瓣和 3 个牛心包小叶组成,这些小叶使用 35-F 通路鞘通过经心尖方法插入. 瓣膜具有外部固定框架(43、46 或 50 毫米)和内部支架框架(27 毫米),瓣膜锚定是通过加大尺寸/径向力以及支架框架的特定设计特征实现的,以将瓣膜固定在子环空间。多达 9 种 TMVR 设备已经用于人类,至少有 5 种处于临床前开发阶段 (3)。Intrepid TMVR 系统(Medtronic plc,都柏林,爱尔兰)由包含在自膨胀镍钛诺框架中的三叶牛心包瓣和 3 个牛心包小叶组成,这些小叶使用 35-F 通路鞘通过经心尖方法插入. 瓣膜具有外部固定框架(43、46 或 50 毫米)和内部支架框架(27 毫米),瓣膜锚定是通过加大尺寸/径向力以及支架框架的特定设计特征实现的,以将瓣膜固定在子环空间。多达 9 种 TMVR 设备已经用于人类,至少有 5 种处于临床前开发阶段 (3)。Intrepid TMVR 系统(Medtronic plc,都柏林,爱尔兰)由包含在自膨胀镍钛诺框架中的三叶牛心包瓣和 3 个牛心包小叶组成,这些小叶使用 35-F 通路鞘通过经心尖方法插入. 瓣膜具有外部固定框架(43、46 或 50 毫米)和内部支架框架(27 毫米),瓣膜锚定是通过加大尺寸/径向力以及支架框架的特定设计特征实现的,以将瓣膜固定在子环空间。爱尔兰)由一个包含在自膨胀镍钛诺框架中的三叶牛心包瓣膜和 3 个牛心包小叶组成,这些小叶使用 35-F 通路鞘通过经心尖方法插入。瓣膜具有外部固定框架(43、46 或 50 毫米)和内部支架框架(27 毫米),瓣膜锚定是通过加大尺寸/径向力以及支架框架的特定设计特征实现的,以将瓣膜固定在子环空间。爱尔兰)由一个包含在自膨胀镍钛诺框架中的三叶牛心包瓣膜和 3 个牛心包小叶组成,这些小叶使用 35-F 通路鞘通过经心尖方法插入。瓣膜具有外部固定框架(43、46 或 50 毫米)和内部支架框架(27 毫米),瓣膜锚定是通过加大尺寸/径向力以及支架框架的特定设计特征实现的,以将瓣膜固定在子环空间。
更新日期:2018-01-01
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