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    • 2. 发明申请
    • A MEDICAL DEVICE
    • 医疗器械
    • WO2010041038A1
    • 2010-04-15
    • PCT/GB2009/002433
    • 2009-10-12
    • VERYAN MEDICAL LIMITEDHERATY, KevinMULLINS, LiamGILSON, PaulBURKE, MartinBLOWICK, Ray
    • HERATY, KevinMULLINS, LiamGILSON, PaulBURKE, MartinBLOWICK, Ray
    • A61F2/84
    • A61F2/958
    • A stent deployment device comprises an elongate catheter shaft (2), and an inflatable balloon (3). The inflatable balloon (3) is movable between a collapsed configuration and an expanded configuration. In the expanded configuration part of the longitudinal axis of the balloon (3) is curved in three-dimensional space, and part of the balloon (3) is helically shaped. A stent (6) is movable from a collapsed delivery configuration to a partially expanded intermediate configuration, and subsequently from the intermediate configuration to a fully expanded deployed configuration. In the delivery configuration the longitudinal axis of the stent (6) is straight. The longitudinal axis of the stent (6) may be straight or curved in three-dimensional space in the intermediate configuration. In the deployed configuration the longitudinal axis of the stent (6) is curved in three-dimensional space. The balloon (3) in the expanded configuration exerts force on the stent (6). In the deployed configuration the stent (6) in turn exerts force on the internal wall of a blood vessel (5) causing the longitudinal axis of the blood vessel (5) to curve in three-dimensional space.
    • 支架展开装置包括细长的导管轴(2)和可膨胀气球(3)。 可膨胀气囊(3)可在折叠构型和膨胀构型之间移动。 在气囊(3)的纵向轴线的膨胀构造部分中,在三维空间中弯曲,并且气球(3)的一部分是螺旋形的。 支架(6)可以从折叠的输送配置移动到部分扩展的中间配置,并且随后从中间配置到完全展开的展开配置。 在输送构型中,支架(6)的纵向轴线是直的。 在中间构造中,支架(6)的纵向轴线可以是三维空间中的直线或弯曲的。 在展开的构造中,支架(6)的纵向轴线在三维空间中弯曲。 膨胀构造中的气囊(3)对支架(6)施加力。 在展开的构造中,支架(6)又在血管(5)的内壁施加力,导致血管(5)的纵向轴线在三维空间中弯曲。
    • 4. 发明申请
    • A STENT SUITABLE FOR DEPLOYMENT IN A BLOOD VESSEL
    • 适用于在血管中部署的STENT
    • WO2010041040A1
    • 2010-04-15
    • PCT/GB2009/002437
    • 2009-10-12
    • VERYAN MEDICAL LIMITEDHERATY, KevinMULLINS, Liam
    • HERATY, KevinMULLINS, Liam
    • A61F2/90
    • A61F2/915A61F2/90A61F2/91A61F2250/0018
    • A stent (1) comprises a central section (2), a first intermediate section (3), a first end section (4), a second intermediate section (5), and a second end section (6). The stent (1) is movable between a collapsed delivery configuration and an expanded deployment configuration. In the delivery configuration the central section (2), the first intermediate section (3), the first end section (4), the second intermediate section (5), and the second end section (6) are all cylindrically shaped. In the deployment configuration the central section (2) is helically shaped, while the first end section (4) and the second end section (6) remain cylindrically shaped. Each intermediate section (3, 5) acts as a blended region to provide a smooth transition from the helical shape of the central section (2) to the cylindrical shape of the unstented blood vessel. The radial stiffness of the stent (1 ) varies gradually along part of the length of the stent (1). The radial stiffness of the end region of the stent (1) is less than the radial stiffness of a first region located further in from the end of the stent (1). The variation in radial stiffness reduces the area of blood vessel wall which has low wall shear stress, reduces the possibility of recirculation, and reduces the risk of neointimal hyperplasia.
    • 支架(1)包括中心部分(2),第一中间部分(3),第一端部分(4),第二中间部分(5)和第二端部部分(6)。 支架(1)可在折叠的输送配置和扩展的部署配置之间移动。 在输送构造中,中心部分(2),第一中间部分(3),第一端部分(4),第二中间部分(5)和第二端部部分(6)都是圆柱形的。 在展开构造中,中心部分(2)是螺旋形的,而第一端部部分(4)和第二端部部分(6)保持圆柱形。 每个中间部分(3,5)用作混合区域以提供从中心部分(2)的螺旋形状到不连续血管的圆柱形状的平滑过渡。 支架(1)的径向刚度随着支架长度的一部分逐渐变化。 支架(1)的端部区域的径向刚度小于从支架(1)的端部进一步位于的第一区域的径向刚度。 径向刚度的变化减小了具有低壁剪切应力的血管壁面积,降低了再循环的可能性,并降低了新生内膜增生的风险。