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    • 3. 发明公开
    • Superelastic guiding member
    • 超弹力Führungsteil。
    • EP0491349A2
    • 1992-06-24
    • EP91121586.1
    • 1991-12-17
    • ADVANCED CARDIOVASCULAR SYSTEMS, INC.
    • Abrams, Robert M.Fariabi, Sepehr
    • A61M25/01C22F1/00
    • C22F1/006A61L31/022A61L2400/16A61M25/09A61M2025/09008A61M2025/09083A61M2025/09141A61M2025/09175A61M2205/0266C22C14/00C22C30/00
    • An improved guiding member for advancing a catheter within a body lumen having a unique combination of superelastic characteristics. The superelastic alloy material has a composition consisting of titanium and nickel and may have one or more elements selected from the group consisting of iron, cobalt, vanadium and copper. The alloy material is 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-inducedaustenite-to-martensite phase transformation at an exceptionally high constant yield strength of at least 90 ksi for solid members and at least 70 ksi for tubular members with a broad recoverable strain of at least about 4% during the phase transformation.
    • 一种改进的引导构件,用于使具有超弹性特征的独特组合的体腔内的导管前进。 超弹性合金材料具有由钛和镍构成的组成,并且可以具有一种或多种选自铁,钴,钒和铜的元素。 将合金材料冷加工,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a 直“记忆”。 使用这种改进材料的引导构件在固体构件的异常高的恒定屈服强度为至少90ksi的情况下表现出应力诱发的奥氏体 - 马氏体相变,并且至少具有至少70ksi的管状构件,其具有至少的可恢复应变 在相变期间约为4%。
    • 9. 发明公开
    • Guidewire with superelastic distal portion
    • Führungsdrahtmit einem superelastischen farenTeilstück
    • EP1426071A2
    • 2004-06-09
    • EP03078884.8
    • 1994-01-14
    • ADVANCED CARDIOVASCULAR SYSTEMS, INC.Abrams, Robert M.
    • Abrams, Robert M.Chan, Randy S.Burpee, Janet W.
    • A61M25/01C22F1/00B23K1/20B23K35/30
    • C22F1/006A61M25/09A61M2025/09083A61M2025/09141
    • 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 a 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.
    • 一种改进的导丝,用于将导管推进在具有高强度近端部分的体腔内,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部分之间提供扭矩传递联接 末端部分。 超弹性合金元素优选被冷加工,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的异常高的恒定屈服强度为至少70ksi的情况下表现出应力诱导的奥氏体 - 马氏体相变,并且至少具有至少50ksi的管状构件,其具有至少大约的可恢复应变 在相变期间为4%。