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公开(公告)号：US5242462A
公开(公告)日：1993-09-07
申请号：US777977
申请日：1991-10-17
申请人： Fozan O. El-Nounou , Michael A. Savin , Ronald A. Sahatjian , Michael Weinreich , Thomas F. Kordis
发明人： Fozan O. El-Nounou , Michael A. Savin , Ronald A. Sahatjian , Michael Weinreich , Thomas F. Kordis
CPC分类号： A61F2/01 , A61F2002/016 , A61F2002/8486 , A61F2230/005 , A61F2230/0067
摘要： A filter device positionable within a blood vessel for trapping blood clots in that vessel, the filter device comprising a head with a plurality of divergent legs each secured at its proximal end, to the head, each leg having a hook arranged at its distal end.Each leg has a radially outwardly directed radius of curvature to create a conical configuration to the filter assembly, while distributing the stress concentration along the length of the bend, so that the elastic limit of the material, stainless steel in this embodiment, is not exceeded, and which permits compact delivery of the filter, and adequate radially directed force to permit slight hook penetration of a vessel wall.
摘要翻译： 一种位于血管内的过滤器装置，用于捕获血管内的血块，该过滤装置包括头部，该头部具有多个分支腿，每个头部在其近端固定到头部，每个腿部具有设置在其远端的钩。 每个支腿具有径向向外指向的曲率半径，以在沿弯曲部分的长度分布应力集中的同时向过滤器组件产生锥形结构，使得不超过本实施例中不锈钢材料的弹性极限 ，并且其允许过滤器的紧密输送和足够的径向力以允许容器壁的轻微的钩子穿透。
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公开(公告)号：US5059205A
公开(公告)日：1991-10-22
申请号：US404166
申请日：1989-09-07
申请人： Fozan O. El-Nounou , Michael A. Savin , Ronald A. Sahatjian , Michael Weinreich , Thomas F. Kordis
发明人： Fozan O. El-Nounou , Michael A. Savin , Ronald A. Sahatjian , Michael Weinreich , Thomas F. Kordis
CPC分类号： A61F2/01 , A61F2002/016 , A61F2002/8486 , A61F2230/005 , A61F2230/0067
摘要： A filter device positionable within a blood vessel for trapping blood clots in that vessel, the filter device comprising a head with a plurality of divergent legs each secured at its proximal end, to the head, each leg having a hook arranged at its distal end. The distal end includes a reversely bent portion of the leg which itself is bent radially outwardly, ending in the shape of a sharp point. The reversely bent portion of the leg comprises a pad to minimize the depth of penetration of the hook.A further embodiment of the leg shows a radially outwardly directed radius of curvature to create a conical configuration to the filter assembly, while distributing the stress concentration along the length of the bend, so that the elastic limit of the material, stainless steel in this embodiment, is not exceeded, and which permits compact delivery of the filter, and adequate radially directed force to permit slight hook penetration of a vessel wall.
摘要翻译： 一种位于血管内的过滤器装置，用于捕获血管内的血块，该过滤装置包括头部，该头部具有多个分支腿，每个头部在其近端固定到头部，每个腿部具有设置在其远端的钩。 远端包括腿的反向弯曲部分，其本身被径向向外弯曲，以尖锐的形状终止。 腿的反向弯曲部分包括垫，以最小化钩的穿透深度。 腿的另一实施例示出了径向向外指向的曲率半径，以在沿着弯曲部分的长度分布应力集中的同时向过滤器组件产生锥形结构，使得在该实施例中的不锈钢材料的弹性极限 ，并且其允许过滤器的紧密输送以及足够的径向力以允许容器壁的轻微的钩子穿透。
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公开(公告)号：US4950227A
公开(公告)日：1990-08-21
申请号：US267575
申请日：1988-11-07
CPC分类号： A61L31/18 , A61F2/90 , A61F2/958 , A61F2002/9583 , A61F2230/0013
摘要： A stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expansible distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state; a stent positioned around the distal portion of the catheter, having a contracted condition and being expansible to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the stent having an end portion defining a margin lying over the expansible portion of the catheter; a sleeve in the region of the distal portion of the catheter positioned around the catheter having a first end fixed to the catheter and a second end defining a margin lying over the margin of the stent; the sleeve fixing the end of the stent on the catheter when the catheter is in the contracted state, the catheter and stent cooperatively constructed and arranged to cause expansion of the catheter from its contracted state to its expanded state to cause expansion of the stent, including the margin of the stent, from its contracted condition to its expanded condition, and therewith cause the margin of the sleeve to slide axially from over the margin of the stent thereby releasing the end of the stent from the catheter.
摘要翻译： 一种用于促进支架引入和放置的支架输送系统，包括具有可膨胀远端部分的导管，所述导管构造和布置成用于将导管的外径从收缩状态扩展到扩张状态; 位于导管的远侧部分周围的支架，其具有收缩状态并且可膨胀至扩张状态，并且在收缩状态下被定尺寸为在收缩状态下紧密围绕导管，支架具有限定边缘的端部 在导管的可膨胀部分上; 定位在导管周围的导管的远端部分的区域中的套筒，其具有固定到导管的第一端和限定位于支架的边缘上方的边缘的第二端; 所述套管在导管处于收缩状态时将支架的端部固定在导管上，导管和支架协同构造和布置成导致导管从其收缩状态扩张到其膨胀状态以引起支架膨胀，包括 支架的边缘从其收缩状态到其扩张状态，并且因此导致套筒的边缘从支架的边缘轴向滑动，从而从支架释放支架的端部。
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