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    MEDICAL DEVICE FOR CROSSING AN OCCLUDED BLOOD VESSEL
    1.
    发明申请
    MEDICAL DEVICE FOR CROSSING AN OCCLUDED BLOOD VESSEL 审中-公开
    用于穿过血管血管的医疗装置

    公开(公告)号：US20090264907A1

    公开(公告)日：2009-10-22

    申请号：US12106032

    申请日：2008-04-18

    申请人： Anthony C. Vrba ,  Todd P. Messal

    发明人： Anthony C. Vrba ,  Todd P. Messal

    IPC分类号： A61B17/22

    CPC分类号： A61M25/09 ,  A61M25/00 ,  A61M2025/09175

    摘要： Medical devices and methods for making and using the same. An example medical device includes a tubular shaft and a crossing member disposed within the tubular shaft. The crossing member may include a loop portion. The methods for using the medical device may include advancing the medical device through the vasculature to a position where at least a portion of the device contacts an intravascular lesion and expanding the loop portion of the crossing device to displace the occlusion.

    摘要翻译： 医疗器械及其制造和使用方法。 一种示例性医疗装置包括管状轴和设置在管状轴内的交叉构件。 交叉构件可以包括环部分。 使用医疗装置的方法可以包括将医疗装置通过脉管系统推进至至少一部分装置与血管内病变接触的位置，并扩大交叉装置的环部分以移位闭塞。

    Stent delivery system using shape memory retraction
    4.
    发明授权
    Stent delivery system using shape memory retraction 失效

    公开(公告)号：US06206888B1

    公开(公告)日：2001-03-27

    申请号：US09283444

    申请日：1999-04-01

    申请人： Andrew D. Bicek ,  Lance A. Monroe ,  Anthony C. Vrba ,  Steven E. Walak

    发明人： Andrew D. Bicek ,  Lance A. Monroe ,  Anthony C. Vrba ,  Steven E. Walak

    IPC分类号： A61F1100

    CPC分类号： A61F2/966 ,  A61F2/95 ,  A61F2002/9583 ,  A61F2210/0023

    摘要： The inventive stent delivery system includes a catheter having a retractable outer sheath near its distal end. A shape memory contraction member having a memorized contracted shape is connected to the retractable outer sheath. A heat generating device connected to the shape memory contraction member causes the shape memory contraction member to heat up to its transition temperature and assume its contracted position, retracting the retractable outer sheath. Another embodiment utilizes 2 springs, a “normal” spring and a shape memory alloy (SMA) spring, the two springs selected and designed so that the “normal” has an expansion force which is less than SMA spring when the SMA spring is austenitic, but greater than the SMA spring when the SMA spring is martensitic. Yet another embodiment utilizes a shape memory latch which in its martensitic state abuts a stop to prevent a spring from moving the sheath proximally, but in its austenitic state releases the stop, allowing the spring to retract the sheath to release the stent for deployment.

    Expandable intravascular occlusion material removal devices and methods of use
    5.
    发明授权
    Expandable intravascular occlusion material removal devices and methods of use 失效
    可扩张的血管内阻塞材料去除装置及使用方法

    公开(公告)号：US5501694A

    公开(公告)日：1996-03-26

    申请号：US206053

    申请日：1994-03-03

    申请人： Thomas V. Ressemann ,  Anthony C. Vrba ,  Steven S. Hackett

    发明人： Thomas V. Ressemann ,  Anthony C. Vrba ,  Steven S. Hackett

    IPC分类号： A61B17/22 ,  A61B17/32 ,  A61B19/00 ,  A61B17/00 ,  A61M25/00

    CPC分类号： A61B17/320725 ,  A61B2017/22042 ,  A61B2017/22075 ,  A61B2017/320012 ,  A61B90/39

    摘要： An improved expandable removal element for an atherectomy device wherein the expandable removal element is movable between an expanded position and a contracted position. In one embodiment of the present invention, a drive shaft is operatively connected to the distal end of the expandable removal element for rotating the removal element. A catheter surrounds a portion of the drive shaft. The catheter is shiftable with respect to the drive shaft for moving the material removal element between the expanded position and the contracted position. In another embodiment of the present invention, dual coaxial drive shafts are employed. The inner drive shaft and the outer drive are shiftable with respect to one another for moving the removal element between the expanded position and the contracted position. The present invention also describes several embodiments of a removal element for increasing the durability and effectiveness of the removal element. One embodiment of the removal element of the present invention comprised a plurality of braided wires having an abrasive disposed thereon. Another embodiment of a removal element is to provide a plurality of individual wires within each "braid" to increase the abrasive surface area of the removal element. In this " multi-ended" configuration, a plurality of wires are bundled together to form a single multi-ended strand. These single multi-ended strands are then braided together and an abrasive is disposed thereon to form the removal element. Finally, a number of novel methods for removing vascular occlusion material are provided.

    摘要翻译： 一种用于粥样斑块切除装置的改进的可扩张去除元件，其中所述可扩张移除元件可在扩张位置和收缩位置之间移动。 在本发明的一个实施例中，驱动轴可操作地连接到可扩张去除元件的远端，用于旋转移除元件。 导管围绕驱动轴的一部分。 导管可相对于驱动轴移动，以便在扩张位置和收缩位置之间移动材料移除元件。 在本发明的另一实施例中，采用双同轴驱动轴。 内部驱动轴和外部驱动器可相对于彼此移动，用于使移除元件在扩张位置和收缩位置之间移动。 本发明还描述了用于提高去除元件的耐久性和有效性的去除元件的几个实施例。 本发明的去除元件的一个实施例包括多个编织线，其上布置有磨料。 去除元件的另一个实施例是在每个“编织物”内提供多条单独的线，以增加去除元件的研磨表面积。 在这种“多端”配置中，多条电线捆绑在一起以形成单个多端线。 然后将这些单个多端股线编织在一起，并在其上设置磨料以形成去除元件。 最后，提供了许多用于去除血管闭塞材料的新方法。

    Medical device with push force limiter
    8.
    发明授权
    Medical device with push force limiter 失效
    带推力限制器的医疗器械

    公开(公告)号：US07824345B2

    公开(公告)日：2010-11-02

    申请号：US10746220

    申请日：2003-12-22

    申请人： Charles L. Euteneuer ,  Anthony C. Vrba

    发明人： Charles L. Euteneuer ,  Anthony C. Vrba

    IPC分类号： A61M25/00 ,  A61M5/178 ,  A61M25/098

    CPC分类号： A61M25/09 ,  A61M25/0054 ,  A61M2025/0915

    摘要： A medical device with improved flexibility characteristics and methods of using the same. The medical device may include a proximal end, a distal end, and an intermediate region. In at least some embodiments, the column strength or flexibility of the intermediate portion is generally greater than the column strength or flexibility at the distal end.

    摘要翻译： 具有改善的柔性特性的医疗装置及其使用方法。 医疗装置可以包括近端，远端和中间区域。 在至少一些实施例中，中间部分的柱强度或柔性通常大于在远端处的柱强度或柔性。

    Stent delivery means with balloon retraction means
    10.
    发明授权
    Stent delivery means with balloon retraction means 有权
    支架输送方式为气囊回缩装置

    公开(公告)号：US06702843B1

    公开(公告)日：2004-03-09

    申请号：US09547771

    申请日：2000-04-12

    申请人： Brian J. Brown ,  Anthony C. Vrba

    发明人： Brian J. Brown ,  Anthony C. Vrba

    IPC分类号： A61F206

    CPC分类号： A61F2/958 ,  A61F2/95 ,  A61F2/966 ,  A61M25/0119 ,  A61M25/1011 ,  A61M2025/1081

    摘要： The present invention provides an improved medical device delivery catheter. The medical device delivery system comprises a catheter having a medical device receiving portion adapted to receive a medical device near the distal end of the catheter and a medical device such as a stent concentrically arranged around the catheter within the medical device receiving portion. The medical device delivery system further comprises a movable medical balloon disposed about the medical device. In use, the balloon may be inflated to dilate a lesion, retracted to deploy the medical device and subsequently reinflated to seat the medical device.

    摘要翻译： 本发明提供了一种改进的医疗装置输送导管。 医疗装置传送系统包括具有适于接收导管远端附近的医疗装置的医疗装置接收部分的导管和诸如在医疗装置接收部分内围绕导管同心布置的支架的医疗装置。 医疗装置输送系统还包括围绕医疗装置设置的可动医疗气囊。 在使用中，气囊可以被充气以扩张病变，缩回以部署医疗装置，随后再次充气以对医疗装置进行安置。