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    • 4. 发明申请
    • CATHETER SHAFT AND METHOD OF ITS MANUFACTURE
    • 导管轴及其制造方法
    • WO2009085531A1
    • 2009-07-09
    • PCT/US2008/085185
    • 2008-12-01
    • ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.GUO, XiaopingSTEHR, Richard E.
    • GUO, XiaopingSTEHR, Richard E.
    • A61M25/16
    • A61M25/0012A61M25/0045A61M25/005
    • A method of manufacturing a catheter shaft includes the steps of forming an inner layer (26) of a first polymeric material, forming a plait matrix layer (30) including a second polymeric material about the inner layer (26), and forming an outer layer (32) of a third polymeric material about the plait matrix layer (30). The plait matrix layer (30) includes a braided wire mesh (28) partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer (26) and the third polymeric material forming the outer layer (32). The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes.
    • 制造导管轴的方法包括以下步骤:形成第一聚合物材料的内层(26),形成围绕内层(26)的包含第二聚合材料的辫状基质层(30),并形成外层 (30)的第三聚合物材料(32)。 辫子基质层(30)包括部分或完全嵌入第二聚合物材料内的编织丝网(28),其不同于形成内层(26)的第一聚合物材料和形成 外层(32)。 第二聚合物材料具有比至少第一聚合物材料更高的屈服应变和/或更低的硬度,优选第一和第三聚合物材料。 导管轴可以通过逐步挤出,共挤出和/或回流工艺形成。
    • 5. 发明申请
    • TRANSSEPTAL NEEDLE ASSEMBLIES AND METHODS
    • TRANSSEPTAL NEEDLE组装和方法
    • WO2007137136A2
    • 2007-11-29
    • PCT/US2007/069180
    • 2007-05-17
    • ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.HASSETT, James A.STEHR, Richard E.
    • HASSETT, James A.STEHR, Richard E.
    • A61M29/00
    • A61M25/0084A61B17/3478A61B17/3496A61M25/0606
    • The instant invention relates to transseptal access systems and methods for accessing the left atrium (52) from the right atrium (48) by crossing the interatrial septum (50). In particular, the instant invention is directed toward medical devices used with catheter assemblies in cardiology procedures that require transseptal puncture(s). The puncture assemblies (e.g., 10) have a moveable puncture device (e.g., 14) within a dilator (e.g., 16). The puncture device is biased in a retracted position. The position of the puncture assembly is precisely locatable. The puncture assembly is preferably flexible along the majority of the length of its and, therefore, can be used with any catheter assembly of any predetermined shape. The puncture device is adjustable from a position within the dilator to a position extending beyond the end of the dilator when necessary for use in transseptal procedures.
    • 本发明涉及通过穿过房间隔(50)从右心房(48)进入左心房(52)的经血管通路系统和方法。 特别地,本发明涉及在需要经过心脏穿刺的心脏病学程序中与导管组件一起使用的医疗装置。 穿刺组件(例如,10)在扩张器(例如,16)内具有可移动穿刺装置(例如14)。 穿刺装置被偏置在缩回位置。 穿刺组件的位置可精确定位。 穿刺组件优选沿其大部分长度是柔性的,因此可以与任何预定形状的导管组件一起使用。 穿刺装置可以从扩张器内的位置调节到延伸超出扩张器末端的位置,当需要用于经血管手术时。