A compressible and expandable stent assembly for implantation in a body lumen such as a mitral valve, the stent assembly including at least one stent barrel that is shaped and sized so that it allows for normal operation of adjacent heart structures. One or more stent barrels can be included in the stent...http://www.google.com.tw/patents/US20080183273?utm_source=gb-gplus-share專利 US20080183273 - Stented heart valve devices and methods for atrioventricular valve replacement