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45 条记录 (耗时 0.02 秒)

    Endocardial mapping apparatus with rotatable arm and method
    2.
    发明授权
    Endocardial mapping apparatus with rotatable arm and method 失效
    具有可旋转臂和方法的心内膜测绘装置

    公开(公告)号：US5400783A

    公开(公告)日：1995-03-28

    申请号：US135048

    申请日：1993-10-12

    申请人： Mark L. Pomeranz ,  Patsy A. Gingell ,  Mir A. Imran

    发明人： Mark L. Pomeranz ,  Patsy A. Gingell ,  Mir A. Imran

    IPC分类号： A61B5/0408 ,  A61B5/042 ,  A61B18/12 ,  A61B18/14 ,  A61N1/05 ,  A61N1/06 ,  A61B5/04

    CPC分类号： A61B5/6858 ,  A61B18/1492 ,  A61B5/0422 ,  A61N1/06 ,  A61B18/14 ,  A61B18/1815 ,  A61B2018/0016 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00898 ,  A61B2018/124 ,  A61B2562/0209 ,  A61B2562/043

    摘要： An endocardial mapping apparatus for mapping the wall of a chamber of the heart having blood therein. The apparatus includes a flexible elongate tubular member having proximal and distal extremities and at least one lumen extending therethrough. A basket assembly is carried by the distal extremity of the flexible elongate tubular member and is movable between contracted and expanded positions. The basket assembly has a plurality of elongate flexible circumferentially spaced-apart arms with joined proximal and distal extremities and a plurality of longitudinally spaced-apart electrodes carried by each arm for engaging the wall of the heart. The arms have spaces therebetween when the basket assembly is in an expanded position. An elongate flexible rotatable member is rotatably coupled to the joined distal extremities and is disposed within the basket assembly. At least one electrode is carried by the rotatable member for engaging the wall of the heart. A torque knob is coupled to the rotatable member for rotating the member within the basket assembly and for bowing it radially outwardly into a space between the arms so as to engage the wall of the heart along a portion of the length thereof for mapping and/or ablating.

    摘要翻译： 一种用于映射具有血液的心脏室的壁的心内膜测绘装置。 该装置包括具有近端和远端的柔性细长管状构件和延伸穿过其中的至少一个内腔。 篮组件由柔性细长管状构件的远端承载并且可在收缩位置和扩展位置之间移动。 筐组件具有多个具有连接的近端和远端的细长的柔性周向间隔开的臂，以及由每个臂承载的用于接合心脏壁的多个纵向间隔开的电极。 当筐组件处于展开位置时，臂之间具有间隔。 细长的柔性可旋转构件可旋转地联接到连接的远端，并且设置在篮组件内。 至少一个电极由可旋转构件承载以接合心脏的壁。 扭矩旋钮联接到可旋转构件，用于在篮组件内旋转构件并将其径向向外弯曲成臂之间的空间，以便沿其长度的一部分与心脏的壁接合以用于映射和/或 烧伤

    Catheter for RF ablation with cooled electrode and method
    4.
    发明授权
    Catheter for RF ablation with cooled electrode and method 失效
    用于RF消融的导管用冷却的电极和方法

    公开(公告)号：US5658278A

    公开(公告)日：1997-08-19

    申请号：US381198

    申请日：1995-01-31

    申请人： Mir A. Imran ,  Mark L. Pomeranz

    发明人： Mir A. Imran ,  Mark L. Pomeranz

    IPC分类号： A61B18/12 ,  A61B17/00 ,  A61B18/00 ,  A61B18/14 ,  A61B17/39 ,  A61N1/05

    CPC分类号： A61B18/1492 ,  A61B18/1402 ,  A61B2017/00084 ,  A61B2017/003 ,  A61B2018/00023 ,  A61B2018/00029 ,  A61B2018/00035 ,  A61B2018/00166 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00821

    摘要： A catheter for radio frequency ablation with a cooled electrode for use in tissue having a surface comprising an elongate member having proximal and distal extremities. A metal conducting electrode secured to the distal extremity of the elongate member and having a chamber therein. A conductor extends through the elongate member from the proximal to the distal extremity for supplying radio frequency energy to the electrode. The elongate member has a lumen in the distal extremity which is in communication with the chamber. A coolant is disposed in the chamber and in contact with the electrode for dissipating heat created in the electrode by the application of radio frequency energy thereto.

    摘要翻译： 一种用于射频消融的导管，其具有用于组织的冷却电极，其具有包括具有近端和远端的细长构件的表面。 金属导电电极固定到细长构件的远端并且在其中具有室。 导体从近端延伸穿过细长构件到远端，用于向电极提供射频能量。 细长构件具有与腔室连通的远端末端的内腔。 冷却剂设置在室中并与电极接触，用于通过对其施加射频能量来散发在电极中产生的热量。

    Device having an electrically actuatable section with a portion having a current shunt and method
    6.
    发明授权
    Device having an electrically actuatable section with a portion having a current shunt and method 失效
    具有电致动部分的装置，具有一个具有电流分路和方法的部分

    公开(公告)号：US5349964A

    公开(公告)日：1994-09-27

    申请号：US57098

    申请日：1993-05-05

    申请人： Mir A. Imran ,  Gholam-Reza Zadno-Azizi ,  Mark L. Pomeranz

    发明人： Mir A. Imran ,  Gholam-Reza Zadno-Azizi ,  Mark L. Pomeranz

    IPC分类号： A61B1/00 ,  A61M25/01 ,  A61B5/00

    CPC分类号： A61M25/0158 ,  A61M2025/0161 ,  A61M25/09033

    摘要： Device comprising an elongate tubular member having proximal and distal extremities and having a section with a plurality of lumens extending from the proximal extremity to the section. At least two conductive elements are disposed in the lumens in said section of the elongate tubular member. The conductive elements are formed of a conductive metal alloy having a recoverable strain in excess of 1% and exhibiting a martensitic phase transformation. Electrical current is supplied to the at least one conductive element. The section has at least one portion. A current conductor is carried by said at least one conductive element for shunting current flow around the at least one portion of said at least one conductive element.

    摘要翻译： 装置包括具有近端和远端的细长管状构件，并具有具有从近端延伸至所述区段的多个内腔的区段。 至少两个导电元件设置在细长管状构件的所述部分中的内腔中。 导电元件由具有超过1％的可恢复应变并显示马氏体相变的导电金属合金形成。 电流被提供给至少一个导电元件。 该部分至少有一部分。 电流导体由所述至少一个导电元件承载，用于分流围绕所述至少一个导电元件的至少一部分的电流。

    Method for RF ablation using cooled electrode
    9.
    发明授权
    Method for RF ablation using cooled electrode 失效
    使用冷却电极进行射频消融的方法

    公开(公告)号：US5423811A

    公开(公告)日：1995-06-13

    申请号：US214785

    申请日：1994-03-16

    申请人： Mir A. Imran ,  Mark L. Pomeranz

    发明人： Mir A. Imran ,  Mark L. Pomeranz

    IPC分类号： A61B18/12 ,  A61B17/00 ,  A61B18/00 ,  A61B18/14 ,  A61B17/39 ,  A61N1/05

    CPC分类号： A61B18/1492 ,  A61B18/1402 ,  A61B2017/00084 ,  A61B2017/003 ,  A61B2018/00023 ,  A61B2018/00029 ,  A61B2018/00035 ,  A61B2018/00166 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00821

    摘要： A catheter for radio frequency ablation with a cooled electrode for use in tissue having a surface comprising an elongate member having proximal and distal extremities. A metal conducting electrode secured to the distal extremity of the elongate member and having a chamber therein. A conductor extends through the elongate member from the proximal to the distal extremity for supplying radio frequency energy to the electrode. The elongate member has a lumen in the distal extremity which is in communication with the chamber. A coolant is disposed in the chamber and in contact with the electrode for dissipating heat created in the electrode by the application of radio frequency energy thereto.

    摘要翻译： 一种用于射频消融的导管，其具有用于组织的冷却电极，其具有包括具有近端和远端的细长构件的表面。 金属导电电极固定到细长构件的远端并且在其中具有室。 导体从近端延伸穿过细长构件到远端，用于向电极提供射频能量。 细长构件具有与腔室连通的远端末端的内腔。 冷却剂设置在室中并与电极接触，用于通过对其施加射频能量来散发在电极中产生的热量。

    Catheter for RF ablation with cooled electrode
    10.
    发明授权
    Catheter for RF ablation with cooled electrode 失效
    用于RF消融的导管用冷却的电极

    公开(公告)号：US5348554A

    公开(公告)日：1994-09-20

    申请号：US983732

    申请日：1992-12-01

    申请人： Mir A. Imran ,  Mark L. Pomeranz

    发明人： Mir A. Imran ,  Mark L. Pomeranz

    IPC分类号： A61B18/12 ,  A61B17/00 ,  A61B18/00 ,  A61B18/14 ,  A61B17/39 ,  A61N1/05

    CPC分类号： A61B18/1492 ,  A61B18/1402 ,  A61B2017/00084 ,  A61B2017/003 ,  A61B2018/00023 ,  A61B2018/00029 ,  A61B2018/00035 ,  A61B2018/00166 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00821

    摘要： A catheter for radio frequency ablation with a cooled electrode for use in tissue having a surface comprising an elongate member having proximal and distal extremities. A metal conducting electrode secured to the distal extremity of the elongate member and having a chamber therein. A conductor extends through the elongate member from the proximal to the distal extremity for supplying radio frequency energy to the electrode. The elongate member has a lumen in the distal extremity which is in communication with the chamber. A coolant is disposed in the chamber and in contact with the electrode for dissipating heat created in the electrode by the application of radio frequency energy thereto.

    摘要翻译： 一种用于射频消融的导管，其具有用于组织的冷却电极，其具有包括具有近端和远端的细长构件的表面。 金属导电电极固定到细长构件的远端并且在其中具有室。 导体从近端延伸穿过细长构件到远端，用于向电极提供射频能量。 细长构件具有与腔室连通的远端末端的内腔。 冷却剂设置在室中并与电极接触，用于通过对其施加射频能量来散发在电极中产生的热量。