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    • 2. 发明申请
    • HIGH LOAD STEERABLE SHAFT AND METHOD FOR CARDIAC CATHETER
    • 用于心脏导管的高负载可控轴和方法
    • WO2018015516A1
    • 2018-01-25
    • PCT/EP2017/068427
    • 2017-07-20
    • CREGANNA UNLIMITED COMPANYMCDERMOTT, BernardSZCZEPANSKI, Adam
    • MCDERMOTT, BernardSZCZEPANSKI, Adam
    • A61M25/01
    • A tube or skeleton (22) for a steerable catheter includes a cylindrical body structured to permit bending in at least one bending direction and to resist bending in directions transverse to the bending direction. The cylindrical body may include a laser cut metal tube (22), wires bent and connected to one another, or one or more coiled wires with axial support wires attached to the coil to define one or more bending directions to form bending segments (28). The skeleton includes axially stiff portions that resist compression when a pull wire is pulled to cause bending movement. The axially stiff portions may include a backbone, an alignment of pivot structures, connected axially extending portions of wire elements, or axially extending support wires or rods. Two or more bending portions may be provided, each with different bending directions. Complex bending shapes may be provided by arranging the segments in rotated positions along the skeleton.
    • 用于可操纵导管的管或骨架(22)包括圆柱形主体,所述圆柱形主体构造成允许在至少一个弯曲方向上弯曲并且抵抗横向于弯曲方向的方向上的弯曲。 圆柱形主体可以包括激光切割金属管(22),弯曲并彼此连接的线,或具有附接到线圈的轴向支撑线以限定一个或多个弯曲方向以形成弯曲部分(28)的一个或多个线圈线, 。 骨架包括轴向刚性部分,当拉动拉线引起弯曲运动时,该部分抵抗压缩。 轴向刚性部分可以包括骨架,枢转结构的对齐,线元件的连接的轴向延伸部分,或轴向延伸的支撑线或杆。 可以设置两个或更多弯曲部分,每个弯曲部分具有不同的弯曲方向。 复杂的弯曲形状可以通过将分段沿着骨架布置在旋转位置来提供。