-
公开(公告)号：US6106642A
公开(公告)日：2000-08-22
申请号：US088684
申请日：1998-06-02
申请人： Paul DiCarlo , Steven E. Walak
发明人： Paul DiCarlo , Steven E. Walak
CPC分类号： C22F1/006
摘要： A process for treating nitinol so that desired mechanical properties are achieved. In one embodiment, the process comprises the steps of exposing the nitinol to a primary annealing temperature within the range of approximately 475.degree. C. to 525.degree. C. for a first time period, and thereafter exposing the nitinol to a secondary annealing temperature within the range of approximately 550.degree. C. to 800.degree. C. for a second time period. The invention also includes nitinol articles made by the process of the invention.
摘要翻译： 一种处理镍钛诺以达到期望的机械性能的方法。 在一个实施方案中，该方法包括以下步骤：将镍钛诺第一次暴露于约475℃至525℃范围内的初级退火温度，然后将镍钛诺暴露于第二退火温度 范围为约550℃至800℃，持续第二时间。 本发明还包括通过本发明的方法制备的镍诺醇制品。
-
公开(公告)号：US06485507B1
公开(公告)日：2002-11-26
申请号：US09362261
申请日：1999-07-28
申请人： Steven E. Walak , Paul DiCarlo
发明人： Steven E. Walak , Paul DiCarlo
IPC分类号： A61F206
CPC分类号： A61F2/01 , A61F2/90 , A61F2/91 , A61F2/915 , A61F2002/016 , A61F2002/91541 , A61F2002/91558 , A61F2230/005 , A61F2230/0069 , A61F2230/008 , A61F2250/0018 , A61F2250/0042 , A61F2250/0048
摘要： Medical devices may be made of shape-memory materials portions of which have been heat treated to exhibit spatial variations in the stiffness of the material. Devices including stents, vena cava filters and guidewires may be constructed from such materials. Devices may also be made from shape-memory materials which have been locally heat treated such that the superelasticity of the treated portion is destroyed while the remainder of the shape-memory material can transition between the martensitic and austenitic states.
摘要翻译： 医疗装置可以由形状记忆材料制成，其部分已被热处理以显示材料刚度的空间变化。 包括支架，腔静脉过滤器和导丝的装置可以由这样的材料构成。 器件还可以由局部热处理的形状记忆材料制成，使得被处理部分的超弹性被破坏，而其余的形状记忆材料可以在马氏体和奥氏体状态之间转变。
-
公开(公告)号：US06997947B2
公开(公告)日：2006-02-14
申请号：US10304249
申请日：2002-11-26
申请人： Steven E. Walak , Paul DiCarlo
发明人： Steven E. Walak , Paul DiCarlo
IPC分类号： A61F2/06
CPC分类号： A61F2/01 , A61F2/90 , A61F2/91 , A61F2/915 , A61F2002/016 , A61F2002/91541 , A61F2002/91558 , A61F2230/005 , A61F2230/0069 , A61F2230/008 , A61F2250/0018 , A61F2250/0042 , A61F2250/0048
摘要： Medical devices may be made of shape-memory materials portions of which have been heat treated to exhibit spatial variations in the stiffness of the material. Devices including stents, vena cava filters and guidewires may be constructed from such materials. Devices may also be made from shape-memory materials which have been locally heat treated such that the superelasticity of the treated portion is destroyed while the remainder of the shape-memory material can transition between the martensitic and austenitic states.
-
公开(公告)号：US06540849B2
公开(公告)日：2003-04-01
申请号：US09507753
申请日：2000-02-22
申请人： Paul DiCarlo , Steven E. Walak
发明人： Paul DiCarlo , Steven E. Walak
IPC分类号： C22C1903
CPC分类号： C22F1/006
摘要： A process for treating nitinol so that desired mechanical properties are achieved. In one embodiment, the process comprises the steps of exposing the nitinol to a primary annealing temperature within the range of approximately 475° C. to 525° C. for a first time period, and thereafter exposing the nitinol to a secondary annealing temperature within the range of approximately 550° C. to 800° C. for a second time period. The invention also includes nitinol articles made by the process of the invention.
-
公开(公告)号：US06540767B1
公开(公告)日：2003-04-01
申请号：US09500209
申请日：2000-02-08
IPC分类号： A61N2900
CPC分类号： A61F2/01 , A61F2002/016 , A61F2002/018 , A61F2210/0028 , A61F2210/0038 , A61F2230/005 , A61F2230/0067 , A61F2230/008
摘要： A thrombosis filter which can be securely affixed at a selected location in the vascular system of a patient and removed when no longer required, and method for removing the thrombosis filter. An embodiment of the thrombosis filter includes a plurality of struts made from a shape memory alloy which changes shape at a temperature other than body temperature, thereby allowing removal of the filter.
摘要翻译： 一种血栓形成过滤器，其可以牢固地固定在患者的血管系统中的选定位置并且在不再需要时被去除，以及用于去除血栓形成过滤器的方法。 血栓形成过滤器的一个实施例包括由形状记忆合金制成的多个支柱，其在体温以外的温度下改变形状，从而允许去除过滤器。
-
公开(公告)号：US07727273B2
公开(公告)日：2010-06-01
申请号：US11035316
申请日：2005-01-13
CPC分类号： C22C27/02 , A61L27/047 , A61L31/022 , Y10T428/31678
摘要： Medical devices, such as stents, and methods of making the devices are disclosed. In some embodiments, a medical device includes an alloy having tantalum, tungsten, zirconium and niobium. For example, the alloy can include from about 20% to about 40% by weight of tantalum, from about 0.5% to about 9% by weight of tungsten, and from about 0.5% to about 10% by weight of zirconium.
摘要翻译： 公开了诸如支架的医疗装置和制造装置的方法。 在一些实施例中，医疗装置包括具有钽，钨，锆和铌的合金。 例如，合金可以包括约20重量％至约40重量％的钽，约0.5重量％至约9重量％的钨和约0.5重量％至约10重量％的锆。
-
公开(公告)号：US6000601A
公开(公告)日：1999-12-14
申请号：US735031
申请日：1996-10-22
申请人： Steven E. Walak
发明人： Steven E. Walak
IPC分类号： A61F2/00 , A61F2/82 , A61F2/90 , B23K9/23 , B23K15/00 , B23K26/00 , B23K26/24 , B23K26/32 , B23K31/02 , B23K101/22
CPC分类号： A61F2/90 , B23K15/0013 , B23K15/006 , B23K15/0093 , B23K26/24 , B23K9/23 , A61F2/82 , A61F2002/30451 , A61F2220/0058 , A61F2230/0017 , B23K2203/14
摘要： A welding method for improving the durability and strength of fusion weld joints in metal structures; the method is especially beneficial for metal structures fabricated from nickel-titanium alloy (nitinol) and for medical devices.
-
公开(公告)号：US06872217B2
公开(公告)日：2005-03-29
申请号：US10350235
申请日：2003-01-23
CPC分类号： A61F2/01 , A61F2002/016 , A61F2002/018 , A61F2210/0028 , A61F2210/0038 , A61F2230/005 , A61F2230/0067 , A61F2230/008
摘要： A thrombosis filter which can be securely affixed at a selected location in the vascular system of a patient and removed when no longer required. An embodiment of the thrombosis filter includes a plurality of struts formed of a shape memory material. A change in temperature can cause the struts to extend and engage a wall of a blood vessel.
摘要翻译： 一种血栓形成过滤器，其可以牢固地固定在患者的血管系统中的选定位置，并且在不再需要时被去除。 血栓形成过滤器的一个实施例包括由形状记忆材料形成的多个支柱。 温度的变化可导致支柱延伸并与血管的壁接合。
-
公开(公告)号：US06206888B1
公开(公告)日：2001-03-27
申请号：US09283444
申请日：1999-04-01
IPC分类号： A61F1100
CPC分类号： A61F2/966 , A61F2/95 , A61F2002/9583 , A61F2210/0023
摘要： The inventive stent delivery system includes a catheter having a retractable outer sheath near its distal end. A shape memory contraction member having a memorized contracted shape is connected to the retractable outer sheath. A heat generating device connected to the shape memory contraction member causes the shape memory contraction member to heat up to its transition temperature and assume its contracted position, retracting the retractable outer sheath. Another embodiment utilizes 2 springs, a “normal” spring and a shape memory alloy (SMA) spring, the two springs selected and designed so that the “normal” has an expansion force which is less than SMA spring when the SMA spring is austenitic, but greater than the SMA spring when the SMA spring is martensitic. Yet another embodiment utilizes a shape memory latch which in its martensitic state abuts a stop to prevent a spring from moving the sheath proximally, but in its austenitic state releases the stop, allowing the spring to retract the sheath to release the stent for deployment.
-
公开(公告)号：US07938854B2
公开(公告)日：2011-05-10
申请号：US12784134
申请日：2010-05-20
CPC分类号： C22C27/02 , A61L27/047 , A61L31/022 , Y10T428/31678
摘要： Medical devices, such as stents, and methods of making the devices are disclosed. In some embodiments, a medical device includes an alloy having tantalum, tungsten, zirconium and niobium. For example, the alloy can include from about 20% to about 40% by weight of tantalum, from about 0.5% to about 9% by weight of tungsten, and from about 0.5% to about 10% by weight of zirconium.
摘要翻译： 公开了诸如支架的医疗装置和制造装置的方法。 在一些实施例中，医疗装置包括具有钽，钨，锆和铌的合金。 例如，合金可以包括约20重量％至约40重量％的钽，约0.5重量％至约9重量％的钨和约0.5重量％至约10重量％的锆。
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.017 秒)
