Multi-function electrode structures for electrically analyzing and
heating body tissue
    4.
    发明授权
    Multi-function electrode structures for electrically analyzing and heating body tissue 失效
    用于电分析和加热身体组织的多功能电极结构

    公开(公告)号:US5836874A

    公开(公告)日:1998-11-17

    申请号:US629014

    申请日:1996-04-08

    IPC分类号: A61B18/14 A61B5/04 A61B17/39

    摘要: Systems and methods for heating body tissue place a multi-function structure having an exterior wall in contact with body tissue. The structure includes an array of electrically conducting electrode segments carried by the exterior wall. An electrically conductive network is coupled to the electrode segments, including at least one electrically conductive path individually coupled to each electrode segment. The systems and methods operate in a first mode during which the network is electrically conditioned to individually sense at each electrode segment local electrical events in tissue, such as electrical potentials, resistivity, or impedance. The systems and methods operate in a second mode during which the network is electrically conditioned, based at least in part upon local electrical events sensed by the electrode segments, to couple at least two electrode segments together to simultaneously transmit electrical energy to heat or ablate a region of body tissue.

    摘要翻译: 用于加热身体组织的系统和方法设置具有与身体组织接触的外壁的多功能结构。 该结构包括由外壁承载的导电电极段的阵列。 导电网络耦合到电极段,包括分别耦合到每个电极段的至少一个导电路径。 系统和方法以第一模式操作,在该模式期间,网络经电气调节以在每个电极段处单独感测组织中的局部电气事件,例如电势,电阻率或阻抗。 系统和方法在第二模式下操作,其中网络被电调节,至少部分地基于由电极段感测到的局部电气事件,以将至少两个电极段耦合在一起,以同时传输电能以加热或消融 身体组织区域。

    Stem elements for securing tubing and electrical wires to
expandable-collapsible electrode structures
    5.
    发明授权
    Stem elements for securing tubing and electrical wires to expandable-collapsible electrode structures 失效
    用于将管道和电线固定到可膨胀的可折叠电极结构的阀杆元件

    公开(公告)号:US5891135A

    公开(公告)日:1999-04-06

    申请号:US630113

    申请日:1996-04-08

    摘要: A collapsible electrode body is assembled to an end of a catheter tube. A generally rigid stem element having an exterior diameter is connected to the catheter tube. A flexible tube, which has an initial interior diameter smaller than the exterior diameter of the stem element, is deformed into a desired geometry for the electrode body, including a neck region with an enlarged interior diameter greater than the exterior diameter of the stem element. The neck region is slipped about the stem element. Heat is applied to shrink the neck region about the stem element and form a first interference fit junction therebetween. A sleeve is fitted about the first interference fit junction, and heat is applied to shrink the sleeve about the interference fit junction and form a second interference fit junction therebetween. Preferably, after the first interference fit junction is formed, additional heat is applied to thermally fuse the neck region to the stem region.

    摘要翻译: 将可折叠的电极体组装到导管管的一端。 具有外直径的大致刚性的杆元件连接到导管。 具有小于杆元件的外径的初始内径的柔性管变形为电极体的所需几何形状,包括具有大于杆元件的外径的扩大内径的颈部区域。 颈部区域围绕杆元件滑动。 施加热量以使颈部区域围绕杆元件收缩并且在它们之间形成第一干涉配合结。 围绕第一干涉配合接合部安装套筒,并且施加热量以使套筒围绕过盈配合接合部收缩并且在它们之间形成第二干涉配合接合部。 优选地,在形成第一干涉配合结之后,施加额外的热量以将颈部区域热熔合到茎区域。

    Method of forming a catheter body from tubing segments
    10.
    发明授权
    Method of forming a catheter body from tubing segments 失效
    从管段形成导管体的方法

    公开(公告)号:US6063318A

    公开(公告)日:2000-05-16

    申请号:US681666

    申请日:1996-07-29

    IPC分类号: A61M25/00 A61M25/16 B29C65/02

    摘要: A method of bonding sections of a catheter body together in abutting relationship including the steps of providing a temperature resistance polymeric sleeve, which sleeve preferably has a spirally wound metallic wire imbedded between its inner and outer diameters. The sleeve is inserted into ends of tubing segments to be joined together to form a catheter body. Then heat is applied over the area including the sleeve to melt the tubing over the sleeve.

    摘要翻译: 一种将导管体的部分接合在一起的方法,包括提供耐温聚合物套筒的步骤,该套筒优选地具有嵌入其内径和外径之间的螺旋缠绕的金属丝。 将套管插入管段的端部以连接在一起以形成导管体。 然后在包括套筒的区域上施加热量,以将管道熔化在套筒上。