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    • 34. 发明授权
    • Intracorporeal device with NiTi tubular member
    • 具有NiTi管状构件的体内装置
    • US06379369B1
    • 2002-04-30
    • US08982725
    • 1997-12-02
    • Robert M. AbramsRandy S. ChanJanet Walsh BurpeeClifford Teoh
    • Robert M. AbramsRandy S. ChanJanet Walsh BurpeeClifford Teoh
    • A61M2500
    • A61M25/09A61L31/022A61L31/14A61L2400/16A61M2025/09008A61M2025/09083A61M2025/09141A61M2025/09175A61M2205/0266C22C14/00C22C30/00C22F1/006
    • An improved guidewire for advancing a catheter within a body lumen which has a high strength proximal portion, a distal portion formed of superelastic alloy and a connector formed of superelastic alloy to provide torque transmitting coupling between the distal end of the proximal portion and the proximal end of the distal portion. The superelastic alloy elements are preferably cold worked and then heat treated at a temperature well above the austenite-to-martensite transformation temperature, while being subjected to longitudinal stresses equal to about 5 to about 50% of the room temperature yield stress to impart to the metal a straight “memory.” The guiding member using such improved material exhibits a stress induced austenite-to-martensite phase transformation at an exceptionally high constant yield strength of at least 70 ksi for solid members and at least 50 ksi for tubular members with a broad recoverable strain of at least about 4% during the phase transformation.
    • 一种用于将导管推进在具有高强度近端部分的体腔内的改进的导丝,由超弹性合金形成的远端部分和由超弹性合金形成的连接器,以在近端部分的远端和近端之间提供扭矩传递联接 的远端部分。 超弹性合金元素优选是冷加工的,然后在远高于奥氏体 - 马氏体转变温度的温度下进行热处理,同时经受等于室温屈服应力的约5至约50%的纵向应力,以赋予 金属直“记忆”。 使用这种改进的材料的引导构件在固体构件具有至少70ksi的异常高的恒定屈服强度和至少50ksi的管状构件的情况下表现出应力诱导的奥氏体 - 马氏体相变,其具有至少大约的可恢复应变 在相变期间为4%。
    • 35. 发明授权
    • Aneurysm closure device assembly
    • 动脉瘤闭合装置组装
    • US06344041B1
    • 2002-02-05
    • US09699267
    • 2001-10-26
    • David KupieckiClifford TeohHong DoanSon M. GiaErik T. EngelsonUriel Hiram CheeMehran BashiriJoseph C. Eder
    • David KupieckiClifford TeohHong DoanSon M. GiaErik T. EngelsonUriel Hiram CheeMehran BashiriJoseph C. Eder
    • A61B1804
    • A61F2/88A61B17/12022A61B17/12118A61B17/12145A61B17/12154A61B2017/1205A61B2017/12063A61F2002/30092A61F2210/0014A61F2250/0039A61F2310/00023
    • This is an artificial occlusion kit for implanting and retaining an artificial occlusion device in a body space adjacent to and extending from a body lumen in a mammal. The includes at least one occlusion device and a retaining device for blocking the migration of the occlusion device out of the occlusion site. The retaining device is radially expandable at a retaining site adjacent the body space to be occluded to a diameter that is sufficient to engage the body lumen wall at the retaining site and form a barrier across the entrance zone of the body space to be occluded. The expanded retaining device also forms a lumen for flow through body lumen at the retaining site. At least one semi-penetrable space may also be provided in the retaining device, allowing introduction of occlusion devices into the body space to be occluded, but preventing subsequent migration of the occlusion devices out of the body space. This semi-penetrable space may also be distensible to allow for delivery of occlusion devices therethrough. An introducer wire or a tapered-tip delivery catheter may be used to distend the distensible space and deliver the occlusion devices. The retaining device structure may further include a radiopaque metal wire wound into a primary helix over an inner core member made of a superelastic alloy of nickel and titanium. An implantable medical device assembly is also provided, having the structure described for the retaining device of the novel artificial occlusion kit, and which is attached to an elongate pusher via a sacrificial link that is electrolytically dissolvable.
    • 这是一种用于将人工闭塞装置植入和保持在与哺乳动物的体腔相邻并从其延伸的身体空间中的人造闭塞套件。 包括至少一个闭塞装置和用于阻挡闭塞装置移出闭塞部位的保持装置。 保持装置可以在靠近身体空间的保持位置处径向展开,以被阻塞到直径足以与保持位置处的身体腔壁接合并形成穿过要被遮挡的身体空间的入口区域的屏障。 扩张的保持装置还形成用于在保留位置处流过体腔的流明。 还可以在保持装置中设置至少一个半透入空间,从而允许将遮挡装置引入身体空间以被阻塞,但是防止闭塞装置随后从身体空间中移出。 这种半透入空间也可以是可扩张的,以允许通过其中的封闭装置的输送。 导引线或锥形输送导管可用于扩张可扩张空间并输送遮挡装置。 保持装置结构还可以包括在由镍和钛的超弹性合金制成的内芯构件上缠绕到主螺旋中的不透射线金属线。 还提供了一种植入式医疗装置组件,其具有针对新型人造阻塞套件的保持装置所述的结构,并且经由电解可溶解的牺牲连接件连接到细长推动器。