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67 条记录 (耗时 0.03 秒)

    Tracking tip for a work element in a catheter system
    51.
    发明授权
    Tracking tip for a work element in a catheter system 失效
    导管系统中工作元件的跟踪尖端

    公开(公告)号：US5458585A

    公开(公告)日：1995-10-17

    申请号：US098549

    申请日：1993-07-28

    申请人： Stephen M. Salmon ,  John R. McKenzie ,  David A. White

    发明人： Stephen M. Salmon ,  John R. McKenzie ,  David A. White

    IPC分类号： A61M25/00 ,  A61B8/12 ,  A61M25/01

    CPC分类号： A61B8/445 ,  A61B8/12 ,  A61M25/0068 ,  A61M25/008

    摘要： The claimed invention provides an improved tracking tip for use with a work element in a catheter system having a flexible tubular catheter body. Use of a tracking tip according to the present invention will facilitate advancement of the work element within the catheter body and will substantially eliminate the possibility that the work element will puncture the catheter body. Preferred embodiments will comprise a wire coil and will often include a rounded end member, which may be in the form of a solder ball, at the distal tip of the wire coil. In some embodiments, the rounded end member may be coated with a lubricant or a suitable non-stick material to further improve tracking of the work element within the catheter body.

    摘要翻译： 所要求保护的发明提供了一种用于与具有柔性管状导管体的导管系统中的工作元件一起使用的改进的跟踪尖端。 根据本发明的跟踪尖端的使用将有助于工作元件在导管主体内的前进，并且将基本上消除工作元件刺穿导管主体的可能性。 优选的实施例将包括线圈，并且通常将包括在线圈的远端处的圆形端部构件，其可以是焊球的形式。 在一些实施例中，圆形端部构件可涂覆有润滑剂或合适的不粘材料，以进一步改善导管主体内工件的跟踪。

    Inorganic ion exchange material
    53.
    发明授权
    Inorganic ion exchange material 失效
    无机离子交换材料

    公开(公告)号：US4971729A

    公开(公告)日：1990-11-20

    申请号：US462943

    申请日：1990-01-04

    申请人： David A. White

    发明人： David A. White

    IPC分类号： B01J20/06 ,  B01J39/10 ,  C01G43/00 ,  G21F9/00 ,  G21F9/12

    CPC分类号： B01J39/10 ,  G21F9/12

    摘要： An ion exchange material comprises an oxide of a first element selected from elements of Groups IVa, IVb, Va, Vb, VIa, VIb, VIIa, or lanthanide or actinide series of the Periodic Table, in combination with an oxide of at least one different element selected from elements of the afore-mentioned groups of the Periodic Table so as to form a composite material. For example, a composite ion exchange material may comprise silicon dioxide and manganese dioxide. By selecting the appropriate oxides a composite ion exchange material can be prepared which has greater mechanical and/or chemical stability than an individual oxide of the composite material.

    摘要翻译： 离子交换材料包括选自元素周期表第Ⅳa，Ⅳb，Ⅴa，Ⅴb，Ⅵa，Ⅵb，Ⅶa或镧系元素或锕系元素的元素的第一元素的氧化物，以及至少一种不同的氧化物 元素选自上述元素周期表的元素，以形成复合材料。 例如，复合离子交换材料可以包括二氧化硅和二氧化锰。 通过选择合适的氧化物，可以制备复合离子交换材料，其具有比复合材料的单个氧化物更大的机械和/或化学稳定性。

    Ultrasound imaging guidewire with static central core and tip
    55.
    发明授权
    Ultrasound imaging guidewire with static central core and tip 失效

    公开(公告)号：US07060033B2

    公开(公告)日：2006-06-13

    申请号：US10868705

    申请日：2004-06-14

    申请人： David A. White ,  W. Martin Belef

    发明人： David A. White ,  W. Martin Belef

    IPC分类号： A61B8/14

    CPC分类号： A61B8/12 ,  A61B8/4461 ,  A61M25/09

    摘要： An ultrasound imaging guidewire, that is inserted into a patient's body. The guidewire has a static central core and an imaging guidewire body comprising an acoustical scanning device. The acoustical scanning device can be rotated to obtain 360 degree acoustical images of a site of interest in the patients body. Furthermore, the imaging guidewire includes a connector that permits the imaging guidewire body to be disengaged from the static central core tip so that the imaging guidewire body can be axially translated to obtain multi-position imaging. The imaging guidewire body is axially translated without losing the original guidewire positioning because the static central core maintains its position in the patient's body.

    Ultrasound imaging guidewire with static central core and tip
    57.
    发明授权
    Ultrasound imaging guidewire with static central core and tip 有权

    公开(公告)号：US06585654B2

    公开(公告)日：2003-07-01

    申请号：US09844644

    申请日：2001-04-27

    申请人： David A. White ,  W. Martin Belef

    发明人： David A. White ,  W. Martin Belef

    IPC分类号： A61B812

    CPC分类号： A61B8/12 ,  A61B8/4461 ,  A61M25/09

    摘要： An ultrasound imaging guidewire, that is inserted into a patient's body. The guidewire has a static central core and an imaging guidewire body comprising an acoustical scanning device. The acoustical scanning device can be rotated to obtain 360 degree acoustical images of a site of interest in the patients body. Furthermore, the imaging guidewire includes a connector that permits the imaging guidewire body to be disengaged from the static central core tip so that the imaging guidewire body can be axially translated to obtain multi-position imaging. The imaging guidewire body is axially translated without losing the original guidewire positioning because the static central core maintains its position in the patient's body.

    System and method for intraluminal imaging
    58.
    发明授权
    System and method for intraluminal imaging 有权

    公开(公告)号：US06364841B1

    公开(公告)日：2002-04-02

    申请号：US09523689

    申请日：2000-03-13

    申请人： David A. White ,  Alfred E. Williams

    发明人： David A. White ,  Alfred E. Williams

    IPC分类号： A61B814

    CPC分类号： A61B8/12 ,  A61B8/4461 ,  A61M25/00 ,  A61M39/10

    摘要： A vascular catheter system comprises a catheter body having a proximal and distal portion and a single common lumen therebetween. The catheter body includes a first connector secured to the distal end of the proximal portion and a second connector secured to the proximal end of the distal portion. The connectors can be selectively connected to each other to join the lumens of the proximal and distal portions together in a continuous, axially fixed relationship. Disposed within the lumens, when the proximal and distal portions are joined together, is a drive cable. The drive cable may be movably, rotatable about its own longitudinal axis and carries at its distal end, a work element, which is typically an ultrasonic imaging transducer or interventional device. The lumen carrying the cable will be sufficiently large along a proximal portion to permit preferential collapse of the cable should rotation of the distal end become impeded. The catheter body may be made of a polymer or plastic material, such as polyetheretherketone (PEEK), which provides adequate bonding stiffness and resistance to kinking from large hoop stresses.

    Catheter assembly with distal end inductive coupler and embedded transmission line
    59.
    发明授权
    Catheter assembly with distal end inductive coupler and embedded transmission line 有权
    导管组件与远端电感耦合器和嵌入式传输线

    公开(公告)号：US06245020B1

    公开(公告)日：2001-06-12

    申请号：US09238647

    申请日：1999-01-26

    申请人： Thomas C. Moore ,  Eric Williams ,  David A. White ,  Donald S. Mamayek ,  Donald Masters ,  Martin Belef ,  Veijo Soursa

    发明人： Thomas C. Moore ,  Eric Williams ,  David A. White ,  Donald S. Mamayek ,  Donald Masters ,  Martin Belef ,  Veijo Soursa

    IPC分类号： A61B812

    CPC分类号： A61B8/4461 ,  A61B8/06 ,  A61B8/12 ,  A61B8/445 ,  A61B8/4488 ,  A61B18/14

    摘要： A catheter assembly includes an elongate catheter body having a proximal end and a distal end with a drive cable disposed therein, the drive cable having a proximal end and a distal end, and rotatable relative to the catheter body. A first electro-magnetic element is disposed proximate the distal end of the catheter, and a second electro-magnetic element disposed proximate the distal end of the drive cable and in electrical communication with an operative element mounted at the end of the drive cable, the first and second electro-magnetic elements forming an inductive coupler. The catheter assembly can include various other distal operative elements, which are in communication with corresponding proximal operative elements via transmission lines embedded within the wall of the catheter body.

    摘要翻译： 导管组件包括细长导管主体，其具有近端和远端，其中设置有驱动电缆，驱动电缆具有近端和远端，并且可相对于导管主体旋转。 第一电磁元件设置在导管的远端附近，以及设置在驱动电缆的远端附近并与安装在驱动电缆的端部的操作元件电连通的第二电磁元件， 形成电感耦合器的第一和第二电磁元件。 导管组件可以包括各种其它远端操作元件，其通过嵌入导管主体的壁内的传输线与相应的近端操作元件连通。

    Catheher system having connectable distal and proximal portions
    60.
    发明授权
    Catheher system having connectable distal and proximal portions 有权
    导管系统具有可连接的远端和近端部分

    公开(公告)号：US06050949A

    公开(公告)日：2000-04-18

    申请号：US150001

    申请日：1998-09-08

    申请人： David A. White ,  Alfred E. Williams

    发明人： David A. White ,  Alfred E. Williams

    IPC分类号： A61B8/12 ,  A61M25/00 ,  A61M39/10 ,  A61B8/14

    CPC分类号： A61B8/12 ,  A61B8/4461 ,  A61M25/00 ,  A61M39/10

    摘要： A vascular catheter system comprises a catheter body having a proximal and distal portion and a single common lumen therebetween. The catheter body includes a first connector secured to the distal end of the proximal portion and a second connector secured to the proximal end of the distal portion. The connectors can be selectively connected to each other to join the lumens of the proximal and distal portions together in a continuous, axially fixed relationship. Disposed within the lumens, when the proximal and distal portions are joined together, is a drive cable. The drive cable may be movably, rotatable about its own longitudinal axis and carries at its distal end, a work element, which is typically an ultrasonic imaging transducer or interventional device. The lumen carrying the cable will be sufficiently large along a proximal portion to permit preferential collapse of the cable should rotation of the distal end become impeded. The catheter body may be made of a polymer or plastic material, such as polyetheretherketone (PEEK), which provides adequate bonding stiffness and resistance to kinking from large hoop stresses.

    摘要翻译： 血管导管系统包括具有近端部分和远端部分以及其间的单个共同管腔的导管体。 导管主体包括固定到近端部分的远端的第一连接器和固定到远端部分的近端的第二连接器。 连接器可以选择性地彼此连接，以将连接的轴向和固定的关系连接到近端部分和远端部分。 在腔内设置有近端部和远端部分连接在一起时，是驱动电缆。 驱动电缆可以可移动地围绕其自身的纵向轴线旋转并且在其远端处承载工作元件，其通常是超声成像换能器或介入装置。 承载电缆的内腔将沿着近端部分足够大，以允许当前端的旋转受阻时电缆的优先塌缩。 导管主体可以由聚合物或塑料材料制成，例如聚醚醚酮（PEEK），其提供足够的粘合刚度并且抵抗大环箍应力的扭结。