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    • 7. 发明授权
    • Systems and methods for atraumatic implantation of bio-active agents
    • 用于无创植入生物活性剂的系统和方法
    • US07632262B2
    • 2009-12-15
    • US10894810
    • 2004-07-19
    • Mark C. Bates
    • Mark C. Bates
    • A61M31/00
    • A61B17/3478A61B2017/00247A61B2017/00398A61B2017/00871A61B2017/3411A61B2017/3484A61B2018/00392A61M5/3287
    • Methods and apparatus are provided for delivering a bioactive agent in a needle track formed in a target tissue mass, following formation of the needle track, by avoiding impingement of the agent against target tissue at high velocity or by using capillary action to draw the bioactive agent out of the needle during needle withdrawal. The apparatus comprises a catheter and a needle disposed within the catheter and configured to be selectively extended into the tissue mass to a predetermined depth, while dispensing the agent simultaneously with retraction of the needle along the needle track. Alternatively, or in addition, the needle may be configured to create a tissue space surrounding a distal or lateral surface of the needle, into which the bioactive agent to be infused.
    • 提供了方法和装置,用于在形成针迹之后,通过避免以高速度撞击靶组织或通过使用毛细管作用来吸引生物活性剂,将生物活性剂递送到形成在靶组织块中的针迹中 拔针时出针。 该装置包括导管和设置在导管内的针,并且被配置成选择性地延伸到组织块中到预定深度,同时在沿着针轨缩回针的同时分配药剂。 或者或另外,针可以被配置为产生围绕针的远侧或侧表面的组织空间,待注入的生物活性剂。