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    Endovascular cryotreatment catheter
    5.
    发明授权
    Endovascular cryotreatment catheter 有权

    公开(公告)号：US06283959B1

    公开(公告)日：2001-09-04

    申请号：US09378972

    申请日：1999-08-23

    申请人： Jean Pierre Lalonde ,  Robert Martin ,  Claudia Lueckge ,  Leonilda Capuano ,  John W. Lehmann ,  Daniel Nahon

    发明人： Jean Pierre Lalonde ,  Robert Martin ,  Claudia Lueckge ,  Leonilda Capuano ,  John W. Lehmann ,  Daniel Nahon

    IPC分类号： A61B1818

    CPC分类号： A61B18/02 ,  A61B2017/22001 ,  A61B2017/22051 ,  A61B2017/22054 ,  A61B2017/22069 ,  A61B2018/0022 ,  A61B2018/0212 ,  A61B2018/0262 ,  A61B2018/0268

    摘要： A catheter is attached to an elongated catheter body adapted for endovascular insertion with a balloon assembly at its distal end. Coolant injected through the catheter body may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. A valve may regulate back pressure in the return passage to coordinate the flow of coolant into and out of the balloon so as to both inflate the balloon and achieve cryogenic cooling at the surface of the balloon. The coolant is biologically safe, and may be liquid carbon dioxide. Plural balloons may be provided adjacent the cooling segment, and one balloon may be shaped to treat the ostium of a vessel. Preferably, thermal conductivity of the balloon wall is enhanced by inclusion of thermally conductive material, such as metal, which may be introduced as a component of a composite elastomer material, or as a patterned metal layer that defines a pattern of thermally conductive treatment regions of the balloon surface. Patterns formed by printing, lithography or other means with copper, silver or other highly thermally conductive material enhance through-conduction characteristics of the wall so icing preferentially occurs to stimulate tissue destruction and vascular regeneration. Suitable patterns include spirals, dots, arrays of separated segments, or meandering curves which allow expansion of the balloon body without introducing delamination, localized stress cracking or separation of the balloon material. The conductive patterns may include patterns such as waffle-iron or other arrays of small lesions that are effective to treat the endovascular wall. When separate media are used for cooling and for balloon expansion, the cooling chamber may have a large diameter, and the balloon may form a thin shell or cuff. In that case, the balloon may be quickly inflated with a medium such as a saline to provide a quickly deployed and compliant contact structure of excellent conductivity.

    Method for treatment of aneurysms
    6.
    发明申请
    Method for treatment of aneurysms 有权
    治疗动脉瘤的方法

    公开(公告)号：US20050222649A1

    公开(公告)日：2005-10-06

    申请号：US11119368

    申请日：2005-04-29

    申请人： Leonilda Capuano ,  Daniel Nahon ,  Michael Urick ,  Willard Hennemann ,  Patrick Chauvet ,  Claudia Luckge

    发明人： Leonilda Capuano ,  Daniel Nahon ,  Michael Urick ,  Willard Hennemann ,  Patrick Chauvet ,  Claudia Luckge

    IPC分类号： A61B17/22 ,  A61B18/00 ,  A61B18/02 ,  A61B18/22 ,  A61F7/00 ,  A61F7/12 ,  A61N5/06

    CPC分类号： A61B18/02 ,  A61B18/22 ,  A61B2017/22001 ,  A61B2017/22051 ,  A61B2018/00095 ,  A61B2018/0022 ,  A61B2018/0212 ,  A61B2018/0262 ,  A61N5/045 ,  A61N5/0601

    摘要： A method is disclosed for treating an aneurysm or vascular defect by cooling a target tissue region of the aneurysm or vascular defect to a temperature below body temperature for a preselected time period. The method entails thickening, strengthening, or increasing the density of a blood vessel wall by cooling the blood vessel wall with a cryogenically cooled device. The method also includes irradiating the inner wall of a blood vessel around an aneurysm or vascular defect with various forms of energy to delay or halt aneurysm or vascular defect formation. An energy-emitting element is disposed on the distal end portion of a catheter device to be disposed proximate the aneurysm. Various forms of energy, including visible light energy, laser light energy, ultrasound, microwave and radiofrequency sources may be used to irradiate and treat the aneurysm. In addition, the method may include irradiating a tissue site concomitantly with other treatments, including the delivery of vaso-occlusive compounds, mechanical intravascular devices, or an endovascular graft to the target tissue region.

    摘要翻译： 公开了一种用于通过将动脉瘤或血管缺陷的靶组织区域冷却到低于体温的温度预处理时间段来治疗动脉瘤或血管缺陷的方法。 该方法通过用低温冷却装置冷却血管壁来增加，增强或增加血管壁的密度。 该方法还包括以各种形式的能量照射动脉瘤或血管缺损周围的血管内壁，以延迟或停止动脉瘤或血管缺损形成。 能量发射元件设置在导管装置的远端部分上以靠近动脉瘤设置。 可以使用包括可见光能量，激光能量，超声波，微波和射频源在内的各种形式的能量照射和治疗动脉瘤。 此外，该方法可以包括与其它治疗伴随地照射组织部位，包括将血管闭塞化合物，机械血管内装置或血管内移植物递送至靶组织区域。