Indwelling heat exchange catheter and method of using same

    公开(公告)号:US06409747B1

    公开(公告)日:2002-06-25

    申请号:US09503014

    申请日:2000-02-11

    IPC分类号: A61B1724

    CPC分类号: A61F7/12 A61M25/1011

    摘要: A catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes a shaft with a heat exchange region disposed at its distal end. This region may include at least one balloon which is adapted to receive a remotely cooled heat exchange fluid preferably flowing in a direction counter to that of the body fluid. Embodiments including multiple balloons enhance the surface area of contact, and the mixing of both the heat exchange and the body fluid. The catheter can be positioned to produce hypothermia in a selective area of the body without cooling the entire body system. It is of particular advantage in brain surgeries where stroke, trauma or cryogenic tumors can best be addressed under hypothermic conditions.

    Methods for embolizing blood vessels
    62.
    发明授权
    Methods for embolizing blood vessels 有权
    栓塞栓塞方法

    公开(公告)号:US06335384B1

    公开(公告)日:2002-01-01

    申请号:US09680944

    申请日:2000-10-10

    IPC分类号: C08L2904

    摘要: Disclosed are methods useful for treating vascular lesions wherein a non-particulate agent such as a metal coil is introduced into a vascular site (e.g., an aneurysm cavity) in conjunction with an embolizing composition comprising a biocompatible polymer and a biocompatible solvent. The biocompatible solvent is miscible or soluble in blood and also solubilizes the polymer during delivery. The biocompatible polymer is selected to be soluble in the biocompatible solvent but insoluble in blood. Upon contact with the blood, the biocompatible solvent dissipates from the embolic composition whereupon the biocompatible polymer precipitates. Precipitation of the polymer in the presence of the non-particular agent permits the agent to act as a structural lattice for the growing polymer precipitate. In another embodiment, the biocompatible polymer composition can be replaced with a biocompatible prepolymer composition containing a biocompatible prepolymer.

    摘要翻译: 公开了可用于治疗血管损伤的方法,其中将非颗粒剂如金属盘管与包含生物相容性聚合物和生物相容性溶剂的栓塞组合物一起引入血管部位(例如,动脉瘤腔)。生物相容性溶剂 是可混溶的或可溶于血液,也可以在分娩期间溶解聚合物。 选择生物相容性聚合物可溶于生物相容性溶剂,但不溶于血液。 当与血液接触时,生物相容性溶剂从栓塞组合物中消散,因此生物相容性聚合物沉淀。 聚合物在非特异性试剂存在下的析出允许试剂作为生长聚合物沉淀物的结构晶格。在另一个实施方案中,生物相容性聚合物组合物可以用含有生物相容性预聚物的生物相容性预聚物组合物代替。

    Methods for embolizing blood vessels
    63.
    发明授权
    Methods for embolizing blood vessels 有权
    栓塞栓塞方法

    公开(公告)号:US06281263B1

    公开(公告)日:2001-08-28

    申请号:US09438929

    申请日:1999-11-12

    IPC分类号: C08L2904

    摘要: Disclosed are methods useful for treating vascular lesions wherein a non-particulate agent such as a metal coil is introduced into a vascular site (e.g., an aneurysm cavity) in conjunction with an embolizing composition comprising a biocompatible polymer and a biocompatible solvent. The biocompatible solvent is miscible or soluble in blood and also solubilizes the polymer during delivery. The biocompatible polymer is selected to be soluble in the biocompatible solvent but insoluble in blood. Upon contact with the blood, the biocompatible solvent dissipates from the embolic composition whereupon the biocompatible polymer precipitates. Precipitation of the polymer in the presence of the non-particulate agent permits the agent to act as a structural lattice for the growing polymer precipitate. In another embodiment, the biocompatible polymer composition can be replaced with a biocompatible prepolymer composition containing a biocompatible prepolymer.

    摘要翻译: 公开了可用于治疗血管损伤的方法,其中将非颗粒剂如金属盘管与包含生物相容性聚合物和生物相容性溶剂的栓塞组合物一起引入血管部位(例如,动脉瘤腔)。生物相容性溶剂 是可混溶的或可溶于血液,也可以在分娩期间溶解聚合物。 选择生物相容性聚合物可溶于生物相容性溶剂,但不溶于血液。 当与血液接触时,生物相容性溶剂从栓塞组合物中消散,因此生物相容性聚合物沉淀。 聚合物在非颗粒剂存在下的析出允许试剂作为生长聚合物沉淀物的结构晶格。在另一个实施方案中,生物相容性聚合物组合物可以用含有生物相容性预聚物的生物相容性预聚物组合物代替。

    Microcatheter
    64.
    发明授权
    Microcatheter 失效
    微导管

    公开(公告)号:US06254588B1

    公开(公告)日:2001-07-03

    申请号:US09075792

    申请日:1998-05-12

    IPC分类号: A61M2500

    摘要: Disclosed is an elongate flexible microcatheter, for diagnostic and or therapeutic applications. The microcatheter is provided with a small outside diameter and high degree of flexibility, to facilitate negotiation of small, tortuous vessels such as those encountered in intercranial catheterizations. The catheter is formed from a composite of a series of tubular elements, each extending axially for a different distance along the tubular body. A distal section on one or more of the tubular components is provided with a spiral cut, to modify the flexibility properties of the finished catheter. The catheter may also be provided with an inflatable balloon, and a valve to permit the use of a single lumen for both receiving a guidewire and for conveying inflation media.

    摘要翻译: 公开了一种细长的柔性微导管,用于诊断和/或治疗应用。 微导管具有较小的外径和高度的灵活性,以便于协商诸如在颅内导管插入术中遇到的小的曲折血管。 导管由一系列管状元件的复合体形成,每个管状元件沿管状体轴向延伸不同的距离。 一个或多个管状部件上的远端部分设置有螺旋切口,以改变成品导管的柔性。 导管还可以设置有可膨胀气囊,以及阀,以允许使用单个内腔来接收导丝并输送充气介质。

    Indwelling heat exchange catheter and method of using same

    公开(公告)号:US6126684A

    公开(公告)日:2000-10-03

    申请号:US63984

    申请日:1998-04-21

    IPC分类号: A61F2/958 A61F7/12

    CPC分类号: A61F7/12 A61M25/1011

    摘要: A catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes a shaft with a heat exchange region disposed at its distal end. This region may include at least one balloon which is adapted to receive a remotely cooled heat exchange fluid preferably flowing in a direction counter to that of the body fluid. Embodiments including multiple balloons enhance the surface area of contact, and the mixing of both the heat exchange and the body fluid. The catheter can be positioned to produce hypothermia in a selective area of the body without cooling the entire body system. It is of particular advantage in brain surgeries where stroke, trauma or cryogenic tumors can best be addressed under hypothermic conditions.

    Method for embolizing blood vessels
    67.
    发明授权
    Method for embolizing blood vessels 失效
    栓塞血管方法

    公开(公告)号:US5702361A

    公开(公告)日:1997-12-30

    申请号:US594574

    申请日:1996-01-31

    摘要: Disclosed are methods useful for treating vascular lesions wherein a non-particulate agent such as a metal coil is introduced into a vascular site (e.g., an aneurysm cavity) in conjunction with an embolizing composition comprising a biocompatible polymer and a biocompatible solvent. The biocompatible solvent is miscible or soluble in blood and also solubilizes the polymer during delivery. The biocompatible polymer is selected to be soluble in the biocompatible solvent but insoluble in blood. Upon contact with the blood, the biocompatible solvent dissipates from the embolic composition whereupon the biocompatible polymer precipitates. Precipitation of the polymer in the presence of the non-particulate agent permits the agent to act as a structural lattice for the growing polymer precipitate. In another embodiment, the biocompatible polymer composition can be replaced with a biocompatible prepolymer composition containing a biocompatible prepolymer.

    摘要翻译: 公开了可用于治疗血管损伤的方法,其中将非颗粒剂如金属盘管与包含生物相容性聚合物和生物相容性溶剂的栓塞组合物一起引入血管部位(例如,动脉瘤腔)。 生物相容性溶剂是可混溶的或可溶于血液,并且在递送过程中也溶解聚合物。 选择生物相容性聚合物可溶于生物相容性溶剂,但不溶于血液。 当与血液接触时,生物相容性溶剂从栓塞组合物中消散,因此生物相容性聚合物沉淀。 聚合物在非颗粒剂存在下的析出使得该试剂作为生长聚合物沉淀物的结构晶格。 在另一个实施方案中,生物相容性聚合物组合物可以用含有生物相容性预聚物的生物相容性预聚物组合物代替。

    Portable cooler
    69.
    发明授权
    Portable cooler 失效
    便携式冷却器

    公开(公告)号:US5263339A

    公开(公告)日:1993-11-23

    申请号:US923218

    申请日:1992-07-31

    申请人: Scott Evans

    发明人: Scott Evans

    摘要: Portable cooler having a base, a lid and four sidewalls, and further having an upper base and an inner sidewall and a liner shaped to fit within the four sidewalls, base and lid. The liner is fixedly attached to the inner sidewall and another sidewall, and is not fixedly attached to any other portion of the cooler.

    摘要翻译: 具有底座,盖子和四个侧壁的便携式冷却器,并且还具有上基部和内侧壁以及被成形为装配在四个侧壁,底座和盖子内的衬垫。 衬套固定地附接到内侧壁和另一侧壁,并且不固定地附接到冷却器的任何其它部分。