Endovascular cryotreatment catheter

    公开(公告)号:US06283959B1

    公开(公告)日:2001-09-04

    申请号:US09378972

    申请日:1999-08-23

    IPC分类号: A61B1818

    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.
    发明授权
    Method for treatment of aneurysms 有权
    治疗动脉瘤的方法

    公开(公告)号:US07912554B2

    公开(公告)日:2011-03-22

    申请号:US11119368

    申请日:2005-04-29

    IPC分类号: A61F2/00

    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。

    Adjustable position injection tubing
    7.
    发明授权
    Adjustable position injection tubing 有权
    可调节位置注射管

    公开(公告)号:US06280439B1

    公开(公告)日:2001-08-28

    申请号:US09352021

    申请日:1999-07-12

    IPC分类号: A61B1802

    摘要: A cryogenic catheter includes an outer flexible member having a cryogenic fluid path defined by an injection tube disposed in the outer flexible member. The injection tube is slidably disposed within the outer flexible member. A guide member may be provided to support the injection tube within the outer flexible member. A wire is attached to the injection tube at one end and further attached to a spool to provide for take-up of the wire.

    摘要翻译: 低温导管包括具有由设置在外部柔性构件中的注射管限定的低温流体路径的外部柔性构件。 注射管可滑动地设置在外部柔性构件内。 可以设置引导构件以将注射管支撑在外部柔性构件内。 电线在一端连接到注射管,并进一步连接到线轴以提供线的卷绕。

    Method for treatment of aneurysms
    8.
    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

    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。

    Method and device for treatment of aneurysms
    9.
    发明授权
    Method and device for treatment of aneurysms 失效
    用于治疗动脉瘤的方法和装置

    公开(公告)号:US06736809B2

    公开(公告)日:2004-05-18

    申请号:US09964264

    申请日:2001-09-26

    IPC分类号: A61B1818

    摘要: A method is disclosed for treating an aneurysm by cooling a target tissue region of the aneurysm to a temperature below 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. In particular, a device having a heat conductive cooling chamber is disposed proximate to the aneurysm site; and a cryogenic fluid coolant is directed to flow inside the chamber to create endothermic cooling relative to the aneurysm. The method also promotes the growth of collagen and elastin in vascular tissue. Tissue cooling temperatures range from +20 to −20 degrees Celsius. The duration of treatment by application of cooling ranges from 15 seconds to up to 20 minutes or more. The method includes treating the aneurysm both from inside and outside the blood vessel wall forming the aneurysm.

    摘要翻译: 公开了一种用于通过将动脉瘤的靶组织区域冷却到低于温度的预选时间段来治疗动脉瘤的方法。 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。 特别地,具有导热冷却室的装置设置在动脉瘤部位附近; 并且低温流体冷却剂被引导以在腔室内流动以产生相对于动脉瘤的吸热冷却。 该方法还促进血管组织中胶原和弹性蛋白的生长。 组织冷却温度范围为+20至-20摄氏度。 通过应用冷却治疗的持续时间为15秒至20分钟以上。 该方法包括从形成动脉瘤的血管壁的内部和外部处理动脉瘤。

    Coiled injection tube
    10.
    发明申请
    Coiled injection tube 审中-公开
    螺旋注射管

    公开(公告)号:US20060270981A1

    公开(公告)日:2006-11-30

    申请号:US11129044

    申请日:2005-05-13

    IPC分类号: A61F7/12 A61M29/00

    摘要: A medical device includes a catheter having a proximal end and a distal end, the catheter defining a lumen. A passage for a guide wire is disposed within the lumen so as to be coaxial with the lumen. The passage has an open proximal end that is substantially coterminous with the proximal end of the catheter and an open distal end that is substantially coterminous with the distal end of the catheter. A fluid injection tube is wound around the passage for the guide wire and is provided with radially spaced fluid injection ports.

    摘要翻译: 医疗装置包括具有近端和远端的导管,所述导管限定内腔。 用于引导线的通道设置在内腔内以与内腔同轴。 通道具有与导管的近端基本相邻的开放近端,以及与导管的远端基本上相邻的开口远端。 流体注入管缠绕在用于导丝的通道周围,并且设置有径向间隔开的流体注入口。