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公开(公告)号：US5902311A
公开(公告)日：1999-05-11
申请号：US491496
申请日：1995-06-15
CPC分类号： A61B17/0057 , A61B2017/00637 , A61B2017/00641 , A61B2017/00663 , A61B2017/047 , A61B2017/0472
摘要： An improved suturing device and method is provided. The suturing device is of the type including a guide body and means on the guide body for translating at least one needle relative to the guide body. The suturing device is improved by providing a rotatable sleeve disposed over at least a distal portion of the guide body to facilitate introduction of the device to a puncture site.
摘要翻译： 提供了一种改进的缝合装置和方法。 缝合装置的类型包括引导体和引导体上用于相对于引导体平移至少一个针的装置。 通过提供设置在引导体的至少远端部分上方的可旋转套筒来改善缝合装置，以便于将装置引入穿刺部位。
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公开(公告)号：US5895402A
公开(公告)日：1999-04-20
申请号：US784404
申请日：1997-01-17
CPC分类号： A61B17/3207 , A61B17/320783 , A61B2017/320052 , A61M2025/1097
摘要： Intravascular catheters that include a flexible catheter body, a distal housing secured to the catheter body, a work element disposed within the housing and exposed to the external environment through a side window, and a guiding structure for the work element, are disclosed. An axial path through the housing is defined by the guiding structure. Embodiments of the guiding structure include a slot or channel formed in the housing, a coaxial tube attached to the housing, a radially offset ribbon attached to the housing, or the external surface of the housing itself. The work element, such as a rotatable cutting blade in an atherectomy catheter, is coupled to the guiding structure such that the work element is retained within the housing during insertion and operation of the catheter and even when the housing is bent or distorted as a result of bends in the blood vessel.
摘要翻译： 公开了一种血管内导管，其包括柔性导管主体，固定到导管主体的远侧壳体，设置在壳体内并通过侧窗暴露于外部环境的工件，以及用于工件的引导结构。 通过引导结构限定通过壳体的轴向路径。 引导结构的实施例包括形成在壳体中的槽或通道，附接到壳体的同轴管，附接到壳体的径向偏移带或壳体本身的外表面。 诸如在粥样斑块切除术导管中的可旋转切割刀片的工作元件联接到引导结构，使得在插入和操作导管期间工作元件保持在壳体内，并且即使当壳体弯曲或扭曲时 在血管中弯曲。
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公开(公告)号：US5792152A
公开(公告)日：1998-08-11
申请号：US638076
申请日：1996-04-26
CPC分类号： A61B17/0482 , A61B17/0057 , A61B17/0469 , A61B17/06066 , A61B2017/00637 , A61B2017/00641 , A61B2017/00663 , A61B2017/0472 , A61B2017/22038 , A61B2017/2927 , A61F2002/30093 , A61F2210/0019
摘要： A suture applying device comprises a shaft having a nose piece attached at its distal end. The shaft and the nose piece are separated by a transition region, and a needle entry lumen in the shaft permits a flexible needle to be introduced in the distal direction. The needle is able to cross the transition region and penetrate tissue held therein and enter into a return lumen in the nose piece. The return lumen is U-shaped and acts to bend the flexible needle as it is advanced. In this way, the needle passes from the nose piece through the transition region in a proximal direction, and is able to pass through tissue within the transition region generally on the opposite side of a tissue puncture from the first suture passage. The needle then exits from the device, permitting the suture attached to the needle to be drawn fully through the device. The suture may then be tied in order to close and seal the tissue penetration.
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公开(公告)号：US5746755A
公开(公告)日：1998-05-05
申请号：US559254
申请日：1995-11-15
CPC分类号： A61L24/106 , A61B17/00491 , A61B17/0057 , A61B17/0469 , A61B2017/00637 , A61B2017/00641 , A61B2017/00663 , A61B2017/0474 , A61B2017/22038
摘要： A device for providing or enhancing hemostasis at a vascular puncture site disposed at the distal end of a tissue tract comprises a shaft having a non-compliant surface at its distal end. The non-compliant surface is oriented at an angle which allows it to lie flat over tissue puncture when the tissue tract is oriented obliquely, e.g., as the result of the Seldinger catheter introduction technique. The device may be used by itself or in combination with suturing of the vascular puncture, where the device enhances hemostasis and prevents blood leakage through the primary suture closure.
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公开(公告)号：US5643296A
公开(公告)日：1997-07-01
申请号：US357999
申请日：1994-12-16
CPC分类号： A61B17/3207 , A61B17/320783 , A61B2017/320052 , A61M2025/1097
摘要： Intravascular catheters that include a flexible catheter body, a distal housing secured to the catheter body, a work element disposed within the housing and exposed to the external environment through a side window, and a guiding structure for the work element, are disclosed. An axial path through the housing is defined by the guiding structure. Embodiments of the guiding structure include a slot or channel formed in the housing, a coaxial tube attached to the housing, a radially offset ribbon attached to the housing, or the external surface of the housing itself. The work element, such as a rotatable cutting blade in an atherectomy catheter, is coupled to the guiding structure such that the work element is retained within the housing during insertion and operation of the catheter and even when the housing is bent or distorted as a result of bends in the blood vessel.
摘要翻译： 公开了一种血管内导管，其包括柔性导管主体，固定到导管主体的远侧壳体，设置在壳体内并通过侧窗暴露于外部环境的工件，以及用于工件的引导结构。 通过引导结构限定通过壳体的轴向路径。 引导结构的实施例包括形成在壳体中的槽或通道，附接到壳体的同轴管，附接到壳体的径向偏移带或壳体本身的外表面。 诸如在粥样斑块切除术导管中的可旋转切割刀片的工作元件联接到引导结构，使得在插入和操作导管期间工作元件保持在壳体内，并且即使当壳体弯曲或扭曲时 在血管中弯曲。
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公开(公告)号：US5527325A
公开(公告)日：1996-06-18
申请号：US348289
申请日：1994-12-01
CPC分类号： A61B17/320783 , A61M25/0012 , A61B2017/22069 , A61M25/0009 , A61M25/005 , A61M25/0053
摘要： An improved atherectomy catheter and methods of making and using a catheter are disclosed. In one embodiment, the catheter comprises a housing shaft having a torsionally-reinforced outer layer concentrically disposed over a polymeric inner layer, with an inflation tube disposed concentrically over the housing shaft to define an annular inflation lumen. A housing is attached to the distal end of the housing shaft, and may contain an interventional device such as a cutting blade. Apparatus for urging the housing against a vessel wall, such as a balloon, is attached to the housing opposite the an interventional device and is in communication with the inflation lumen. A drive shaft may be rotatably disposed through a longitudinal lumen in the housing shaft, the drive shaft being coupled at its distal end to the interventional device. The method of the invention facilitates construction of a catheter shaft through the steps of forming a flexible tubular polymeric outer layer with a first melting point over a tubular polymeric inner layer with a second melting point, the first melting point being lower than the second melting point; heating the outer layer to at least the first melting point and less than the second melting point, and impregnating a wire braid into the outer layer up to the inner layer. In a preferred embodiment, the inner layer is a fluorocarbon polymer, and the outer layer is a thermoplastic elastomer which is stable near body temperatures, impregnated with one or more layers of a stainless steel wire braid.
摘要翻译： 公开了改进的粥样斑块切除术导管和制造和使用导管的方法。 在一个实施例中，导管包括壳体轴，其具有同心地设置在聚合物内层上方的扭转增强的外层，同心放置在壳体轴上以限定环形膨胀腔。 壳体附接到壳体轴的远端，并且可以包含介入装置，例如切割刀片。 用于将壳体推靠在容器壁（例如气囊）上的装置被附接到与介入装置相对的壳体并与膨胀腔连通。 驱动轴可以可旋转地设置穿过壳体轴中的纵向内腔，驱动轴在其远端处联接到介入装置。 本发明的方法有助于通过以下步骤形成导管轴的构造：在具有第二熔点的管状聚合物内层上形成具有第一熔点的柔性管状聚合物外层，第一熔点低于第二熔点 ; 将外层加热到至少第一熔点并小于第二熔点，并将丝编织物浸入外层直到内层。 在优选的实施方案中，内层是碳氟聚合物，外层是热塑性弹性体，其在体温附近是稳定的，浸渍有一层或多层不锈钢丝编织物。
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公开(公告)号：US5527322A
公开(公告)日：1996-06-18
申请号：US148809
申请日：1993-11-08
CPC分类号： A61B17/0482 , A61B17/0057 , A61B17/0469 , A61B17/06066 , A61B2017/00637 , A61B2017/00641 , A61B2017/00663 , A61B2017/0472 , A61B2017/22038 , A61B2017/2927 , A61F2002/30093 , A61F2210/0019
摘要： A suture applying device comprises a shaft having a nose piece attached at its distal end. The shaft and the nose piece are separated by a transition region, and a needle entry lumen in the shaft permits a flexible needle to be introduced in the distal direction. The needle is able to cross the transition region and penetrate tissue held therein and enter into a return lumen in the nose piece. The return lumen is U-shaped and acts to bend the flexible needle as it is advanced. In this way, the needle passes from the nose piece through the transition region in a proximal direction, and is able to pass through tissue within the transition region generally on the opposite side of a tissue puncture from the first suture passage. The needle then exits from the device, permitting the suture attached to the needle to be drawn fully through the device. The suture may then be tied in order to close and seal the tissue penetration.
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