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1. 发明授权

US5437282A Drive shaft for acoustic imaging catheters and flexible catheters 失效
标题翻译：用于声学成像导管和柔性导管的驱动轴
公开(公告)号：US5437282A
公开(公告)日：1995-08-01
申请号：US144725
申请日：1993-10-29
申请人： James D. Koger , Andrew Kapravy , Kevin R. Heath , Robert J. Crowley
发明人： James D. Koger , Andrew Kapravy , Kevin R. Heath , Robert J. Crowley
IPC分类号： A61B8/12 , A61B17/00 , A61B17/22 , A61M25/00 , G10K11/00 , G10K11/35
CPC分类号： A61B8/12 , A61B8/4461 , A61M25/0045 , G10K11/004 , G10K11/355 , A61B2017/00526 , A61B2017/22078 , Y10T29/4987 , Y10T29/49872
摘要： A shaft is shown having inner and outer members in interfering contact along their length, at least one of which comprises a wire, at least a portion of which is superelastic, to achieve substantial mechanical fidelity and resistance to damage. An ultrasound imaging catheter has a hollow catheter shaft, an ultrasound transducer in the shaft, and a drive shaft that rotates the transducer. The shaft comprises at least one metal coil having characteristic elastic deformation under stress in the range of about 3% to 9%, while a restraint means prevents torsional deflection of the coil. A drive shaft having a coil surrounded by a tube, a coil bonded to an inner coaxial cable, and an inner and outer coil that interfere with one another are shown. A superelastic coil is formed by continuously winding a wire about a mandrel, heating a region of the wire to render it superelastic, and after cooling, removing it from the mandrel.
摘要翻译：轴被示出为具有沿其长度干涉接触的内部和外部构件，其中至少一个包括线，其至少一部分是超弹性的，以实现显着的机械保真度和抗损坏性。超声成像导管具有中空导管轴，轴中的超声换能器以及旋转换能器的驱动轴。轴包括至少一个金属线圈，其在应力下具有在约3％至9％的范围内的特征弹性变形，而约束装置防止线圈的扭转偏转。示出了具有被管围绕的线圈的驱动轴，与内部同轴电缆接合的线圈以及彼此干涉的内部和外部线圈。超弹性线圈通过围绕心轴连续缠绕线而形成，加热线的区域以使其超弹性，并且在冷却之后，将其从心轴移除。

2. 发明授权

US5429597A Kink resistant balloon catheter and method for use 失效
标题翻译：抗扭结球囊导管及使用方法
公开(公告)号：US5429597A
公开(公告)日：1995-07-04
申请号：US204626
申请日：1994-03-01
申请人： Richard DeMello , Andrew Kapravy , George T. Roberts , Sally Thornton
发明人： Richard DeMello , Andrew Kapravy , George T. Roberts , Sally Thornton
IPC分类号： A61M25/00 , A61M31/00
CPC分类号： A61M25/005 , A61M25/09033
摘要： A kink resistant balloon catheter for insertion into a bodily conduit. The catheter (10) includes a shaft (20), a radiopaque distal tip (35), a dilatation balloon (33) between the shaft and the distal tip, and a removable core wire (40). The shaft includes a kink resistant, cross-wound multifilar (CWMF) coil (21) enclosed by a polymeric sleeve (22) and defining a central lumen (28) for delivery of a fluid inflation medium for inflating the balloon. A fixed core wire (36) interconnects the CWMF coil and the distal tip. In a method for widening constricted bodily passages using the novel balloon catheter, the removable core wire is inserted to assist positioning of the catheter, and is removed to permit rapid inflation and deflation of the balloon.
摘要翻译：用于插入身体导管的抗扭结球囊导管。导管（10）包括轴（20），不透射线的远侧末端（35），在轴和远侧末端之间的扩张球囊（33）和可移除的芯线（40）。所述轴包括由聚合物套筒（22）包围并且限定用于输送用于使球囊膨胀的流体膨胀介质的中心腔（28）的扭结抗性交叉卷绕多针（CWMF）线圈（21）。固定芯线（36）将CWMF线圈和远端尖端互连。在使用新型气囊导管加宽收缩的身体通道的方法中，插入可移除的芯线以帮助导管的定位，并且被移除以允许气囊的快速充气和放气。

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