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151 条记录 (耗时 0.041 秒)

    ELECTRICAL MEANS TO NORMALIZE ABLATIONAL ENERGY TRANSMISSION TO A LUMINAL TISSUE SURFACE OF VARYING SIZE
    141.
    发明申请
    ELECTRICAL MEANS TO NORMALIZE ABLATIONAL ENERGY TRANSMISSION TO A LUMINAL TISSUE SURFACE OF VARYING SIZE 有权
    将能量转移到变化尺寸的发光组织表面的电气手段

    公开(公告)号：US20080319350A1

    公开(公告)日：2008-12-25

    申请号：US12143404

    申请日：2008-06-20

    申请人： Michael P. Wallace ,  Robert Garabedian ,  Brent C. Gerberding

    发明人： Michael P. Wallace ,  Robert Garabedian ,  Brent C. Gerberding

    IPC分类号： A61B5/00 ,  A61B18/14

    CPC分类号： A61B18/18 ,  A61B5/053 ,  A61B5/0538 ,  A61B5/1076 ,  A61B18/0218 ,  A61B18/082 ,  A61B18/14 ,  A61B18/1492 ,  A61B18/20 ,  A61B2018/00017 ,  A61B2018/00214 ,  A61B2018/0022 ,  A61B2018/00488 ,  A61B2018/00577 ,  A61B2018/00642 ,  A61B2018/00714 ,  A61B2018/00755 ,  A61B2018/00791 ,  A61B2018/00875 ,  A61B2562/0257

    摘要： Methods and devices for measuring the size of a body lumen and a method for ablating tissue that uses the measurement to normalize delivery of ablational energy from an expandable operative element to a luminal target of varying circumference are provided. The method includes inserting into the lumen an expandable operative element having circuitry with resistivity or inductance that varies according to the circumference of the operative element, varying the expansion of the operative element with an expansion medium, measuring the resistivity of the circuitry, and relating the resistivity or inductance to a value for the circumference of the operative element. In some embodiments the sizing circuit includes a conductive elastomer wrapped around the operative element. Other embodiments of the method apply to operative elements that include an overlapping energy delivery element support in which the overlap varies inversely with respect to the state of expansion, and which is configured with sizing electrodes that sense the amount of the overlap.

    摘要翻译： 提供了用于测量体腔尺寸的方法和装置以及用于消融组织的方法和装置，所述方法使用所述测量来将消融能量从可扩张的可操作元件的规则化转变为变化圆周的管腔靶。 该方法包括将具有电阻率或电感的电路的可扩展的操作元件插入到内腔中，所述电路或电感根据操作元件的周长而变化，用膨胀介质改变操作元件的膨胀，测量电路的电阻率， 电阻率或电感值为操作元件圆周的值。 在一些实施例中，施胶电路包括围绕操作元件缠绕的导电弹性体。 该方法的其他实施例适用于包括重叠的能量传递元件支撑件的操作元件，其中重叠相对于膨胀状态反向变化，并且其被配置有感测重叠量的尺寸电极。

    Occlusive cinching devices and methods of use
    144.
    发明授权
    Occlusive cinching devices and methods of use 有权
    闭塞装置及使用方法

    公开(公告)号：US07229454B2

    公开(公告)日：2007-06-12

    申请号：US10338514

    申请日：2003-01-07

    申请人： Tri Tran ,  Kim Nguyen ,  Hanh Ho ,  My Doan ,  Richard Murphy ,  Michael P. Wallace ,  Clifford Teoh

    发明人： Tri Tran ,  Kim Nguyen ,  Hanh Ho ,  My Doan ,  Richard Murphy ,  Michael P. Wallace ,  Clifford Teoh

    IPC分类号： A61B17/08

    CPC分类号： A61B17/12113 ,  A61B17/12022 ,  A61B17/12172 ,  A61B17/12186 ,  A61B17/1219 ,  A61B2017/1205 ,  A61B2017/12063

    摘要： Methods and devices for blocking orifices and occluding cavities within a patient are provided. The device in one variation comprises first and second tubular members attached to a collapsible sealing element. The device can be placed through an orifice and the collapsible sealing element can be collapsed to seal the orifice. An embolic may be introduced distal to the sealing element to occlude a cavity. The device may incorporate a locking mechanism which can be engaged to lock the sealing element into the collapsed position. The device may incorporate a valve to prevent flow through the tubular members, for example to prevent egress of the embolic from a cavity. The device can be detached to provide a permanent seal of the orifice, and can retain the embolic within the cavity. The device may be used in conjunction with a stent or other retention device to assist the sealing element in maintaining the seal.

    摘要翻译： 提供了用于阻断患者内的孔和闭塞腔的方法和装置。 一个变型中的装置包括附接到可折叠密封元件的第一和第二管状构件。 该装置可以通过孔口放置，并且可折叠密封元件可以折叠以密封孔口。 可以在密封元件的远侧引入栓塞以封闭空腔。 该装置可以包括可以接合以将密封元件锁定到折叠位置的锁定机构。 该装置可以包括阀以防止流过管状构件，例如以防止栓塞从空腔排出。 该装置可以被拆卸以提供孔口的永久性密封，并且可以将栓塞保持在空腔内。 该装置可以与支架或其它保持装置结合使用以帮助密封元件保持密封。

    Apparatus and method for controlling a magnetically controllable embolic in the embolization of an aneurysm
    146.
    发明授权
    Apparatus and method for controlling a magnetically controllable embolic in the embolization of an aneurysm 失效

    公开(公告)号：US06544163B2

    公开(公告)日：2003-04-08

    申请号：US09752748

    申请日：2000-12-28

    申请人： Michael P. Wallace ,  Joseph C. Eder ,  Clifford Teoh

    发明人： Michael P. Wallace ,  Joseph C. Eder ,  Clifford Teoh

    IPC分类号： A61M3700

    CPC分类号： A61B17/12022 ,  A61B17/12186

    摘要： The present invention involves a magnetic embolization apparatus and method for embolizing an aneurysm of a blood vessel. The magnetic embolization apparatus includes a catheter having a distal portion adapted for insertion within an aneurysm of a blood vessel, a permanent magnet carried by the distal portion of the catheter to internally induce a magnetic field from within the aneurysm to control a magnetic field controllable embolic to embolize the aneurysm, and an electromagnet carried by the distal portion of the catheter to internally induce a magnetic field to control delivery of the magnetic field controllable embolic. The method includes delivering a magnetic-field controllable embolic into an aneurysm, inducing a magnetic field in the aneurysm to control the magnetic-field controllable embolic to embolize the aneurysm with the permanent magnet of the catheter, and controlling the delivery of the magnetic-field controllable embolic into the aneurysm with an electromagnet.

    Fast detaching electrically isolated implant
    147.
    发明授权
    Fast detaching electrically isolated implant 有权
    快速拆卸电隔离植入物

    公开(公告)号：US06468266B1

    公开(公告)日：2002-10-22

    申请号：US09644244

    申请日：2000-08-22

    申请人： Mehran Bashiri ,  Michael P. Wallace ,  Pete Phong Pham ,  Cong Thach ,  Chad C. Roue ,  Joseph C. Eder ,  Erik T. Engelson

    发明人： Mehran Bashiri ,  Michael P. Wallace ,  Pete Phong Pham ,  Cong Thach ,  Chad C. Roue ,  Joseph C. Eder ,  Erik T. Engelson

    IPC分类号： A61F1100

    CPC分类号： A61F2/95 ,  A61B17/12022 ,  A61B17/12113 ,  A61B17/12145 ,  A61B17/1215 ,  A61B17/12154 ,  A61B2017/12063 ,  A61F2/01 ,  A61F2002/011 ,  A61F2002/016 ,  A61F2002/9505 ,  A61F2230/0006 ,  A61F2230/005 ,  A61F2230/0069 ,  A61F2230/0091

    摘要： This is an implant for placement in the human body and an assembly for so placing that implant. Most desirably, it is an implant for use in the vasculature of the human body and is used to occlude some space in that vasculature as a portion of a treatment regimen. The implant itself is preferably a component of a deployment device using an electrolytically severable joint. The implant is electrically isolated from the electrolytically severable joint by a highly resistive or insulative layer. Such isolation and minimization of the conductive pathway from the placement apparatus to the body's fluids appears to enhance the susceptibility of the electrolytic joint to quick erosion and detachment of the implant from the deployment media. Although the implant itself is preferably a vaso-occlusive device, it may instead be a stent, a vena cava filter, or other implant which may be installed in this manner.

    摘要翻译： 这是用于放置在人体中的植入物和用于使得植入物放置的组件。 最理想的是，它是用于人体脉管系统的植入物，并且用于封闭该脉管系统中的一些空间作为治疗方案的一部分。 植入物本身优选是使用电解可分割接头的展开装置的部件。 植入物通过高电阻或绝缘层与电解可分离的接头电隔离。 从放置装置到身体的流体的导电通路的这种隔离和最小化似乎增强了电解接头对植入物从展开介质的快速侵蚀和分离的敏感性。 虽然植入物本身优选为血管闭塞装置，但它可以是支架，腔静脉过滤器或可以以这种方式安装的其它植入物。

    Delivery catheter for occlusive implants
    150.
    发明授权
    Delivery catheter for occlusive implants 失效
    用于闭塞植入物的输送导管

    公开(公告)号：US6074407A

    公开(公告)日：2000-06-13

    申请号：US950002

    申请日：1997-10-14

    申请人： Marc-Alan Levine ,  Michael P. Wallace

    发明人： Marc-Alan Levine ,  Michael P. Wallace

    IPC分类号： A61B17/00 ,  A61B17/12 ,  A61B19/00 ,  A61F2/82 ,  A61M29/00

    CPC分类号： A61B17/12022 ,  A61B17/12113 ,  A61B17/12136 ,  A61B17/1214 ,  A61B2017/00557 ,  A61B90/39 ,  A61M2025/0079 ,  A61M2025/1052 ,  A61M2025/1063

    摘要： This is a catheter device for delivering vaso-occlusive materials or devices to a desired site with the body. The catheter is a single lumen valved balloon catheter that enhances the accurate placement of the vaso-occlusive material or device. The balloon may be positioned such that it blocks the opening to a vascular malformation such as an aneurysm. In one embodiment, the balloon is automatically inflated as the vaso-occlusive material or device engages a constrictive feature near the distal end as the device is discharged. The catheter device may also have a lengthened distal section that may be placed within the malformation or aneurysm to improving the filling capability of the device. The catheter device may be constructed to have a number of advantageous radioopaque markers to aid in accurately discharging the vaso-occlusive material or device.

    摘要翻译： 这是用于将血管闭塞材料或装置输送到身体所需位置的导管装置。 该导管是单腔管气囊导管，其可增强血管闭塞性材料或装置的精确放置。 气球可以被定位成使得其将开口阻塞到诸如动脉瘤的血管畸形。 在一个实施例中，当装置被排放时，气囊被自动膨胀，因为血管闭塞性材料或装置接近远端附近的收缩特征。 导管装置还可以具有延长的远端部分，其可以放置在畸形或动脉瘤内以改善装置的填充能力。 该导管装置可以被构造成具有许多有利的放射性标记，以帮助精确地排出血管闭塞性材料或装置。