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91. 发明授权

US06240231B1 Variable stiffness fiber optic shaft 有权
标题翻译：可变刚度光纤轴
公开(公告)号：US06240231B1
公开(公告)日：2001-05-29
申请号：US09219572
申请日：1998-12-22
申请人： David A. Ferrera , Nicholas C. Debeer , Thuzar Han , Daniel R. Kurz , Rose Y. Wong
发明人： David A. Ferrera , Nicholas C. Debeer , Thuzar Han , Daniel R. Kurz , Rose Y. Wong
IPC分类号： G02B604
CPC分类号： G02B6/403 , A61B18/24 , G02B6/04 , G02B6/241 , G02B6/3887 , G02B23/26
摘要： The variable stiffness optical fiber shaft includes a optical fiber, and at least one coaxial layer of heat shrink polymer disposed over the optical fiber of a length shorter than the optical fiber, to provide variations in stiffness along the length of the shaft. The variable stiffness optical fiber shaft preferably includes a plurality of coaxial layers of heat shrink polymer encapsulating the optical fiber, extending from the proximal end of the optical fiber toward the distal end, the plurality of coaxial layers having different lengths to provide said optical fiber shaft with varying stiffness over the length of the optical fiber shaft. The plurality of coaxial layers can be arranged in successive progressively shorter coaxial layers, and can be formed of heat shrink polymeric material, such as polyethylene, PTFE, PEEK, PET or PPS. The variable stiffness optical fiber shaft can also include a coaxial strain relief member disposed over the outer coaxial polymer layers at the proximal end, and a connecting hub disposed over the strain relief member. The variable stiffness optical fiber shaft can also include a hypo tube attached to the optical fiber, and a reinforcing braid attached over the optical fiber, as well as a radiopaque marker that can be a reinforcing coil. A shape memory collar can also be attached over the distal end of the optical fiber, with a distal sheath extending over a portion of the shape memory collar. A hub can also be attached over the proximal portion of the optical fiber. A method of constructing the variable stiffness optical fiber shaft is also provided.
摘要翻译：可变刚度光纤轴包括光纤，以及设置在比光纤短的长度的光纤上的至少一个热收缩聚合物的同轴层，以提供沿轴的长度的刚度变化。可变刚度光纤轴优选地包括多个同轴层，其包封光纤的热收缩聚合物，从光纤的近端延伸到远端，多个同轴层具有不同的长度以提供所述光纤轴在光纤轴的长度上具有变化的刚度。多个同轴层可以以相继逐渐缩短的同轴层布置，并且可以由热收缩聚合材料如聚乙烯，PTFE，PEEK，PET或PPS形成。可变刚度光纤轴还可以包括设置在近端的外同轴聚合物层上的同轴应变消除构件和设置在应变消除构件上的连接毂。可变刚度光纤轴还可以包括附接到光纤的低管，以及附着在光纤上的加强编织物，以及可以是加强线圈的不透射线的标记。形状记忆轴环还可以附接在光纤的远端上，远端鞘在形状记忆颈圈的一部分上延伸。轮毂也可以附着在光纤的近端部分上。还提供了构造可变刚度光纤轴的方法。

92. 发明授权

US06168570A Micro-strand cable with enhanced radiopacity 有权
标题翻译：具有增强射线不透性的微绞线
公开(公告)号：US06168570A
公开(公告)日：2001-01-02
申请号：US09245430
申请日：1999-02-05
申请人： David A. Ferrera
发明人： David A. Ferrera
IPC分类号： A61B500
CPC分类号： A61B17/12022 , A61B17/12113 , A61B17/12145 , A61B17/1215 , A61B17/1219 , A61B90/39 , A61B2017/00867 , A61B2017/12072 , A61M2025/09191
摘要： This invention relates generally to emplacable devices for interventional therapeutic treatment or vascular surgery, and more particularly concerns a stranded micro-cable with enhanced radiopacity that can be used to fabricate a vascular device, a stent, a guidewire or the like. The micro-cable is made of strands of a material exhibiting super-elasticity or shape memory properties, such as nickel-titanium, and includes a strand of radiopaque material, such as platinum or gold, in order to provide a radiopaque marker during interventional therapeutic treatment or vascular surgery. The micro-cable can be used to form occluding coils which can be used in devices to restrict, reinforce, or to occlude areas of small diameter vasculature such as an aneurysm or malformation in an artery or vein in the brain.
摘要翻译：本发明一般涉及用于介入治疗或血管手术的可用装置，更具体地涉及可用于制造血管装置，支架，导丝等的具有增强的射线不透性的绞合微电缆。微电缆由具有超弹性或形状记忆性质的材料的线制成，例如镍钛，并且包括一排不透射线材料，例如铂或金，以便在介入治疗期间提供不透射线的标记治疗或血管手术。微电缆可用于形成闭塞线圈，其可用于限制，加强或阻塞小直径脉管系统的区域，例如动脉瘤或脑中的动脉或静脉中的畸形。

93. 发明授权

US5458572A Catheter with balloon folding into predetermined configurations and method of manufacture 失效
标题翻译：具有气球折叠成预定构造和制造方法的导管
公开(公告)号：US5458572A
公开(公告)日：1995-10-17
申请号：US270144
申请日：1994-07-01
申请人： Andrew J. Campbell , Daniel J. Kalashian , David A. Ferrera , George Michaels
发明人： Andrew J. Campbell , Daniel J. Kalashian , David A. Ferrera , George Michaels
IPC分类号： A61M25/00 , A61F2/958 , A61M29/02 , A61M29/00
CPC分类号： A61M25/104 , A61M2025/1004 , A61M2025/1084
摘要： A medical catheter (10) having a balloon (3) adapted to be folded into a predetermined configuration. The catheter comprises a flexible inflation member (2) with a balloon (3) disposed on the inflation member (2). The balloon has a flexible wall defining an inflation chamber and the inflation chamber is in fluid flow relation with an inflation lumen in the inflation member. The balloon (3) is adapted for inflation from a folded configuration to an inflated, expanded configuration and back to the folded configuration. An array of longitudinally and circumferentially arranged ribs (6) is disposed in said wall (3a). The ribs (6) are either more stiff or less stiff than the wall (3a) whereby upon evacuation of inflation fluid from the balloon (3) either portions of the wall between the ribs will collapse between the ribs or the ribs will collapse within the wall.
摘要翻译：具有适于折叠成预定构造的气囊（3）的医用导管（10）。导管包括柔性的充气构件（2），其中气囊（3）设置在充气构件（2）上。气囊具有限定充气室的柔性壁，并且充气室与充气构件中的充气腔流体流动关系。气球（3）适于从折叠构型充气到膨胀的膨胀构型并且回到折叠构型。纵向和周向布置的肋（6）的阵列设置在所述壁（3a）中。肋（6）比壁（3a）更刚性或更不硬，由此在从气囊（3）排出充气流体时，肋之间的壁的任何一部分将在肋之间塌陷，或者肋在内壁。

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