利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.028 秒)

    Guidewire for precision catheter positioning
    3.
    发明授权
    Guidewire for precision catheter positioning 失效
    导丝精密导管定位

    公开(公告)号：US06406442B1

    公开(公告)日：2002-06-18

    申请号：US09289850

    申请日：1999-04-12

    申请人： Timothy B. McFann ,  John C. Muskivitch ,  James D. Passafaro ,  Kathy M. Mah

    发明人： Timothy B. McFann ,  John C. Muskivitch ,  James D. Passafaro ,  Kathy M. Mah

    IPC分类号： A61B500

    CPC分类号： A61M25/09 ,  A61B17/221 ,  A61B17/320758 ,  A61B2017/00867 ,  A61B2017/22042 ,  A61B2090/064 ,  A61M2025/09083

    摘要： The present invention comprises a guidewire having a compressible guide section capable of deflecting a catheter to abut a lumen wall. The compressible guide section exerts an outward radial force while it is at least partially compressed within a lumen. The guide section permits a physician to precisely locate a catheter within a body lumen and adjust a catheter tip orientation to be directed to a particular side of a body lumen. A method is disclosed for properly matching a guidewire and a catheter to operate together in the present invention, along with a force measuring instrument to assist in measuring a catheter's resistance force value. This method and systems of the present invention involve determining the exact force relationship between the compressible guide section and the resistance of the catheter in vitro.

    摘要翻译： 本发明包括具有能够使导管偏转以邻接管腔壁的可压缩引导部的导丝。 可压缩引导部分在其在管腔内至少部分地被压缩时施加向外的径向力。 引导部分允许医生精确地将导管定位在体腔内并且调整导管尖端取向以被引导到体腔的特定侧。 公开了一种用于在本发明中将引导线和导管正确匹配以一起操作的方法，以及用于辅助测量导管阻力值的力测量仪器。 本发明的这种方法和系统涉及在体外确定可压缩引导部分与导管阻力之间的精确力关系。

    Apparatus for making wire with radial expansible guide section and methods of manufacturing the same
    4.
    发明授权
    Apparatus for making wire with radial expansible guide section and methods of manufacturing the same 失效
    用于制造具有径向可膨胀导向部分的电线的装置及其制造方法

    公开(公告)号：US6139557A

    公开(公告)日：2000-10-31

    申请号：US290510

    申请日：1999-04-12

    申请人： James D. Passafaro ,  Larry B. Rogers ,  Kathy M. Mah ,  Roger W. Perkins ,  Joan Huynh

    发明人： James D. Passafaro ,  Larry B. Rogers ,  Kathy M. Mah ,  Roger W. Perkins ,  Joan Huynh

    IPC分类号： A61B17/32 ,  A61M25/09

    CPC分类号： A61M25/09 ,  A61M2025/09083 ,  A61M2025/09108

    摘要： An apparatus and method of making a guidewire with a preformed three dimensional profile is described. The Apparatus comprises a mandrel having a screw thread for receiving a core wire and at least one securing means for holding the core wire onto the mandrel. The core wire must be retained under tension in order to properly impart the desired shape into the core wire. A system and method of using the apparatus is disclosed comprising the steps of loading the core wire onto the mandrel, securing the core wire and mandrel and then heating the assembly until the wire takes the desired shape.

    摘要翻译： 描述了制造具有预成型三维轮廓的导丝的装置和方法。 该设备包括具有用于容纳芯线的螺纹的心轴和用于将芯线保持在心轴上的至少一个固定装置。 芯线必须保持在张力下，以适当地将所需的形状赋予芯线。 公开了一种使用该设备的系统和方法，包括以下步骤：将芯线装载到心轴上，固定芯线和芯棒，然后加热组件直到线材达到期望的形状。

    Intravascular ultrasonic imaging probe and methods of using same
    7.
    发明授权
    Intravascular ultrasonic imaging probe and methods of using same 失效
    血管内超声成像探针及其使用方法

    公开(公告)号：US5115814A

    公开(公告)日：1992-05-26

    申请号：US395839

    申请日：1989-08-18

    申请人： James M. Griffith ,  Paul J. Zalesky ,  James M. Gessert ,  Viet P. Dinh ,  James D. Passafaro

    发明人： James M. Griffith ,  Paul J. Zalesky ,  James M. Gessert ,  Viet P. Dinh ,  James D. Passafaro

    IPC分类号： A61B5/06 ,  A61B6/00 ,  A61B8/12 ,  G10K11/35

    CPC分类号： A61B8/12 ,  A61B5/06 ,  A61B8/445 ,  A61B8/4461 ,  G10K11/355 ,  G10K11/357

    摘要： An intravascular ultrasonic imaging probe includes a transducer subassembly adapted to being rotated within a guide catheter via a drive cable. The guide catheter establishes a bearing surface for supporting the transducer subassembly during rotation while also mechanically isolating the rotating transducer subassembly from surrounding tissue (thereby protecting the tissue from inadvertent and/or undesired tissue abrasion by the subassembly during rotation). The catheter is positioned within a vessel to be imaged by telescopically advancing the same over a previously positioned guide wire, the guide wire being withdrawn after the guide catheter is positioned. Thereafter, the imaging probe is inserted into the guide catheter and operated so as to obtain ultrasonic images of the vessel under investigation.

    摘要翻译： 血管内超声成像探头包括适于经由驱动电缆在引导导管内旋转的换能器子组件。 引导导管在旋转期间建立支撑表面，用于支撑换能器子组件，同时还将旋转的传感器子组件与周围组织机械隔离（从而保护组织免于组装在旋转过程中的意外和/或不想要的组织磨损）。 导管通过在先前定位的导丝上伸缩推进而定位在待成像的容器内，导丝在引导导管定位之后被抽出。 此后，将成像探针插入引导导管并进行操作，以获得正在研究的血管的超声波图像。

    Method and apparatus for determining oxygen saturation in vivo
    9.
    发明授权
    Method and apparatus for determining oxygen saturation in vivo 失效
    用于确定体内氧饱和度的方法和装置

    公开(公告)号：US4651741A

    公开(公告)日：1987-03-24

    申请号：US739546

    申请日：1985-05-30

    申请人： James D. Passafaro

    发明人： James D. Passafaro

    IPC分类号： G01N21/77 ,  A61B5/00 ,  A61B5/145 ,  A61B5/1459 ,  A61B5/1495 ,  G01N21/31

    CPC分类号： A61B5/1495 ,  A61B5/14535 ,  A61B5/14542 ,  A61B5/1459

    摘要： Accurate in vivo measurement of blood oxygen saturation by fiberoptical means is made possible throughout a wide range of hematocrit or total hemoglobin values by using a single R/IR ratio I and calculating the SO.sub.2 value therefrom through the use of a second-order polynomial of the formSO.sub.2 =Ak.sup.2 I.sup.2 +BkI+Cin which A, B and C are hematocrit or total hemoglobin-dependent coefficients. These values may be contained in a lookup table accessed by a hematocrit or total hemoglobin value selection, and k is a purely multiplicative calibration constant which can be readily determined for any individual fiberoptic system.

    摘要翻译： 通过使用单个R / IR比I，通过使用单次R / IR比I从其计算SO2值，通过光学手段精确地体内测量血氧饱和度可以在广泛的血细胞比容或总血红蛋白值范围内通过使用二级多项式 形成SO2 = Ak2I2 + BkI + C，其中A，B和C是血细胞比容或总血红蛋白依赖系数。 这些值可以包含在通过血细胞比容或总血红蛋白值选择访问的查找表中，并且k是可以容易地针对任何单个光纤系统确定的纯乘法校准常数。

    Medical probe assembly having combined ultrasonic imaging and laser ablation capabilities
    10.
    发明授权
    Medical probe assembly having combined ultrasonic imaging and laser ablation capabilities 失效
    具有组合超声波成像和激光烧蚀功能的医用探针组件

    公开(公告)号：US5010886A

    公开(公告)日：1991-04-30

    申请号：US395840

    申请日：1989-08-18

    申请人： James D. Passafaro ,  James M. Griffith

    发明人： James D. Passafaro ,  James M. Griffith

    IPC分类号： A61B8/12 ,  A61B18/00 ,  A61B18/24 ,  A61B19/00

    CPC分类号： A61B8/12 ,  A61B18/245 ,  A61B8/445 ,  A61B8/4461 ,  A61B2018/1861 ,  A61B2090/378

    摘要： Intravascular probe assemblies are provided with both ultrasonic imaging and laser ablation (angioplasty) capabilities. In preferred embodiments, the probe assemblies will include a distally positioned rotatable housing having an ultrasonic transducer and an optical fiber operatively fixed therein so as to respectively emit acoustic energy and laser radiation along a common path generally parallel to the housing's axis, but in opposing axial directions. An optical and acoustic reflector is interposed between the transducer and optical fiber so as to redirect incident acoustic energy and laser radiation generally radially with respect to the housing.

    摘要翻译： 血管内探针组件具有超声波成像和激光消融（血管成形术）功能。 在优选实施例中，探针组件将包括远端定位的可旋转外壳，其具有超声波换能器和可操作地固定在其中的光纤，以便沿着大致平行于壳体的轴线的公共路径分别发射声能和激光辐射，但是在相对的轴向 方向。 光学和声学反射器被插入在换能器和光纤之间，以便相对于壳体大致径向地引导入射声能和激光辐射。