公开(公告)号：US20090187203A1

公开(公告)日：2009-07-23

申请号：US12357037

申请日：2009-01-21

申请人： Tim Corvi ,  Stephen Boyd ,  Brett Follmer ,  John G. Stine ,  David W. Snow ,  Darren G. Doud

发明人： Tim Corvi ,  Stephen Boyd ,  Brett Follmer ,  John G. Stine ,  David W. Snow ,  Darren G. Doud

IPC分类号： A61B17/22

CPC分类号： A61B10/0275 ,  A61B10/04

摘要： Catheters, kits, and methods are provided for removing material from a body lumen. The catheters and methods may be used in a variety of body lumens, including but not limited to coronary and other arteries. In general, the catheter has a cutting element that cuts material while the material is engaged by a material capture device on the catheter body. Preferably, the material capture device tensions the material during cutting, which reduces the amount of cutting force required. The material capture device typically follows a path that draws material into the catheter body. Preferably, but not necessarily, the material capture device may be arranged on the catheter body to advance along a path outwardly from the catheter body into the material and then inwardly towards the catheter body to tension the material. The cutting element on the catheter body moves between a first position and a second position to cut the material while in tension.

公开(公告)号：US20080132989A1

公开(公告)日：2008-06-05

申请号：US11752448

申请日：2007-05-23

申请人： David W. Snow ,  Timothy W. Robinson ,  Dawn M. Henderson ,  Stuart Lin

发明人： David W. Snow ,  Timothy W. Robinson ,  Dawn M. Henderson ,  Stuart Lin

IPC分类号： A61F2/84 ,  A61F2/82

CPC分类号： A61F2/966 ,  A61F2/95 ,  A61F2/958 ,  A61F2/97 ,  A61F2002/826 ,  A61F2002/9505 ,  A61F2002/9517 ,  A61F2002/9665

摘要： Prosthesis delivery devices and methods are provided that enable precise control of prosthesis position during deployment. The catheter for delivering a prosthesis to a treatment site in a body lumen typically carries one or more self-expanding tubular prostheses within a sheath. A radially expandable control member is positionable within the prostheses and has an expanded shape which engages an inner surface of the prostheses to urge the prostheses outwardly against the sheath. The radially expandable control member therefore controls axial position of the prostheses during deployment. Thus one or more prostheses may be deployed at a treatment site precisely. When multiple prostheses are deployed, excessive spacing or overlap between adjacent prostheses is minimized. The prostheses of the present invention are often deployed in stenotic lesions in peripheral arteries as well as coronary arteries and other body lumens.

摘要翻译： 提供了假体输送装置和方法，其能够在部署期间精确地控制假体位置。 用于将假体递送到体腔内的治疗部位的导管通常在护套内携带一个或多个自膨胀管状假体。 径向可扩张的控制构件可定位在假体内并且具有与假体的内表面接合以将假体向外抵靠护套的扩张形状。 因此，可径向扩张的控制构件在展开期间控制假体的轴向位置。 因此，一个或多个假体可以精确地部署在治疗部位。 当部署多个假体时，相邻假体之间的间隔过大或重叠被最小化。 本发明的假体通常部署在外周动脉以及冠状动脉和其他体腔内的狭窄病变中。

公开(公告)号：US06997934B2

公开(公告)日：2006-02-14

申请号：US10656022

申请日：2003-09-05

申请人： David W. Snow ,  James R. Flom

发明人： David W. Snow ,  James R. Flom

IPC分类号： A61B17/22

CPC分类号： A61B17/320783 ,  A61B17/32075 ,  A61B2017/00022 ,  A61B2017/00292 ,  A61B2017/00353 ,  A61B2017/320791 ,  A61B2090/3614 ,  A61B2090/373 ,  A61B2090/378 ,  A61B2090/3784

摘要： An atherectomy catheter is provided for excising and imaging material in a body lumen. In one embodiment, the catheter comprises a catheter body, a cutting blade, and an imaging device. The cutting blade is mounted on the catheter body and configured to move between a first position and a second position relative to an aperture or cutting window. When the cutting blade is in the second position, the blade substantially closes the aperture on the catheter body. The imaging device which is mounted on or otherwise coupled to the cutting blade is configured to be in an imaging position when the cutting blade substantially closes the aperture or cutter window. This allows the imaging device to survey material within the cutting zone of the atherectomy catheter. By allowing the imaging device to view materials within this cutting zone, material may be imaged and then removed from the body lumen without having to reposition the catheter between each step.

公开(公告)号：US06272639B1

公开(公告)日：2001-08-07

申请号：US09127477

申请日：1998-07-31

申请人： James M. Holden ,  Stephen E. Levin ,  David W. Snow ,  Edwin H. Wrench

发明人： James M. Holden ,  Stephen E. Levin ,  David W. Snow ,  Edwin H. Wrench

IPC分类号： G06F1130

CPC分类号： H04L29/06 ,  G06F21/31 ,  G06F2211/001 ,  G06F2211/005 ,  G06F2211/007 ,  G06F2211/009 ,  G06F2221/2101 ,  H04L63/0218 ,  H04L63/0442 ,  H04L63/0823 ,  H04L63/105

摘要： A method is disclosed for mixed enclave operation of a computer network with users employing a multi-level network security interface and users without any network security interface. Either the network security user selects or the network security interface automatically selects whether communications are permissible with other unsecured users. Where a mixed enclave operation is selected, the network security user identifies when communications are being undertaken with another secured user or a non-secured user. Communications with a non-secured user at a lower security level entail securing the data residing with the secured user from transmission back to the non-secured user.

摘要翻译： 公开了一种计算机网络与使用多级网络安全接口的用户和没有任何网络安全接口的用户的混合飞行操作的方法。 网络安全用户选择或网络安全界面自动选择通信是否允许与其他无安全用户通信。 在选择混合飞行操作的情况下，网络安全用户识别与其他安全用户或非安全用户进行通信时。 与较低安全级别的非安全用户的通信需要将驻留在安全用户身上的数据传送回非安全用户。

公开(公告)号：US5507760A

公开(公告)日：1996-04-16

申请号：US149587

申请日：1993-11-09

申请人： Robert L. Wynne ,  David W. Snow ,  Larry B. Rogers ,  Ferolyn Powell ,  Jeffrey W. Krier ,  Ron Hundertmark ,  Earl R. Hill, III ,  Randolph E. Campbell

发明人： Robert L. Wynne ,  David W. Snow ,  Larry B. Rogers ,  Ferolyn Powell ,  Jeffrey W. Krier ,  Ron Hundertmark ,  Earl R. Hill, III ,  Randolph E. Campbell

IPC分类号： A61B17/00 ,  A61B17/22 ,  A61B17/32

CPC分类号： A61B17/320783 ,  A61B17/32002 ,  A61B2017/00831 ,  A61B2017/320004

摘要： Disclosed herein is a cutter capable of removing soft and hard tissue when used with an atherectomy catheter of the type having a cutter housing attached to the distal end of a catheter having a torque cable. A circular cutting blade is disposed within the housing and is secured to the distal end of a rotatable torque cable. An elongated aperture formed along one side of the hosing allows the intrusion of stenotic material which may then be severed by rotating and axially translating the cutting blade. The cutting blade may be made from a cemented tungsten carbide compound of 90 percent tungsten carbide (WC) and 10 percent cobalt (Co) which is heated, injection molded and sintered to produce a hard, durable cutting edge. The cutting edge is coated with titanium carbonitride using a physical vapor deposition process to further increase durability. Cutting edge hardness is further increased by application of an ion implantation of nitrogen using an ion-beam assisted deposition process. A variety of alternative cutter materials, coatings and geometries are defined which improve cutter performance in removing soft and hard lesions.

摘要翻译： 本文公开了一种切割器，当与具有附接到具有扭矩电缆的导管的远端的切割器壳体的类型的动脉粥样硬化切除导管一起使用时，能够去除软组织和硬组织。 环形切割刀片设置在壳体内并且固定到可旋转扭矩电缆的远端。 沿着软管的一侧形成的细长孔使得可以通过旋转和轴向平移切割刀片来切断狭缝状材料的侵入。 切割刀片可以由90％碳化钨（WC）和10％钴（Co）的硬质合金化合物制成，其被加热，注塑和烧结以产生坚硬，耐用的切削刃。 使用物理气相沉积工艺将切割边缘涂覆有碳氮化钛，以进一步提高耐久性。 通过使用离子束辅助沉积工艺应用氮的离子注入，进一步增加切削刃的硬度。 定义了各种替代的刀具材料，涂层和几何形状，其提高刀具在去除软和硬损伤时的性能。