VARIABLE GEOMETRY COOLING CHAMBER
    3.
    发明公开
    VARIABLE GEOMETRY COOLING CHAMBER 审中-公开
    可变几何冷却室

    公开(公告)号:EP2037993A1

    公开(公告)日:2009-03-25

    申请号:EP07719991.7

    申请日:2007-06-19

    摘要: The present invention provides a medical device that may include a catheter body having proximal and distal portions, a fluid injection lumen disposed within elongate body, and a guidewire lumen disposed within the elongate body. A tip portion defining a cavity in fluid communication with the fluid injection lumen may be coupled to the distal end of the guidewire lumen, and an expandable element may be coupled to the distal portion of the catheter body and to the tip portion, such that the expandable element is in fluid communication with the fluid injection lumen. A shaping element may at least partially surround the expandable element, where the shaping element is configurable in a first geometric configuration and a second geometric configuration.

    摘要翻译: 本发明提供了一种医疗装置,其可以包括具有近端部分和远端部分的导管主体,设置在细长主体内的流体注射内腔以及设置在细长主体内的导丝内腔。 限定与流体注射腔流体连通的空腔的末端部分可联接到导丝腔的远端,并且可扩张元件可联接到导管主体的远端部分和末端部分,使得 可膨胀元件与流体注射腔流体连通。 成形元件可至少部分地围绕可扩张元件,其中成形元件可配置成第一几何构型和第二几何构型。

    EXTENDED TREATMENT ZONE CATHETER
    7.
    发明公开
    EXTENDED TREATMENT ZONE CATHETER 审中-公开
    导管高级处理区

    公开(公告)号:EP1865868A2

    公开(公告)日:2007-12-19

    申请号:EP06748590.4

    申请日:2006-03-24

    IPC分类号: A61B18/02 A61B18/18

    摘要: A catheter having an extended treatment zone for cooling tissue is provided. The catheter includes an elongate catheter body having a distal tip, and a fluid injection conduit disposed inside the catheter body defining a return lumen therein. The fluid injection conduit further defines two or more injection orifices including a first distal orifice near the distal tip, and a second orifice longitudinally offset along the fluid injection conduit to be less proximate the distal tip than the first orifice. Fluid cryogen flowing through the orifices creates an extended tissue cooling contour about the distal end portion of the catheter. At least one ECG ring electrode is provided about the catheter body near the second orifice. The catheter may thus provide for electrocardiographic mapping of tissue nodes lying transversely between the distal tip and the ECG ring electrode.