Medical tools and devices with improved ultrasound visibility
    1.
    发明授权
    Medical tools and devices with improved ultrasound visibility 有权
    具有改善超声能力的医疗工具和设备

    公开(公告)号:US06749554B1

    公开(公告)日:2004-06-15

    申请号:US09914161

    申请日:2002-01-11

    IPC分类号: A61N500

    摘要: A medical or surgical device or tool that is designed to be implanted or inserted inside the human or mammalian body, having at least part of its surface coated whereby the ultrasound visibility of said device or tool in vivo is enhanced, wherein the coating comprises one or more of the following: (i) a matrix material containing a plurality of contrast enhancing elements; (ii) magnesium; (iii) a liquid or polymer which alters its ultrasound imaging properties upon elevating the temperature from ambient to physiological temperature; (iv) a liquid or polymer which alters its ultrasound imaging properties as a result of a change in pH; (v) an essentially non-polymeric bio-compatible compound which forms a discontinuous coating. Preferably the device or tool is a radioactive source for use in brachytherapy, and in particular a radioactive seed.

    摘要翻译: 被设计为植入或插入人体或哺乳动物体内的医疗或手术装置或工具,其具有至少部分表面涂层,从而增强了所述装置或工具的超声能见度,其中所述涂层包括一个或 以下更多:(i)包含多个对比度增强元件的基质材料; (ii)镁; (iii)将温度从环境温度升高到生理温度时改变其超声成像特性的液体或聚合物; (iv)由于pH变化而改变其超声成像特性的液体或聚合物; (v)形成不连续涂层的基本上非聚合的生物相容性化合物。 优选地,装置或工具是用于近距离放射治疗,特别是放射性种子的放射源。