Metal bellows position feedback for hydraulic control of an adjustable gastric band
    9.
    发明授权
    Metal bellows position feedback for hydraulic control of an adjustable gastric band 有权
    金属波纹管位置反馈用于可调节胃带的液压控制

    公开(公告)号:US07481763B2

    公开(公告)日:2009-01-27

    申请号:US10856971

    申请日:2004-05-28

    IPC分类号: A61F2/00

    CPC分类号: A61F5/0003

    摘要: A remotely controlled gastric band system that is practically immune to external magnetic fields, such as from a Magnetic Resonance Imaging (MRI) machine, incorporates a bi-directional pump and fluid reservoir to adjust fluid volume for hydraulic control of a gastric band. A piezoelectric driver (e.g., rotary actuator, linear actuator) selectively compresses and expands a metal bellows hermetically sealed within a biocompatible and nonferromagnetic enclosure or case such as titanium. Directly sensing a position of the metal bellows yields an accurate reading of volume contained therein, allowing for closed-loop control of the gastric band.

    摘要翻译: 实际上免受外部磁场的远程控制的胃带系统,例如来自磁共振成像(MRI)机器,包括双向泵和流体储存器,以调节用于胃束带的液压控制的流体体积。 压电驱动器(例如,旋转致动器,线性致动器)选择性地压缩和膨胀密封在生物相容性和非铁磁性外壳内的金属波纹管,例如钛。 直接感测金属波纹管的位置可以准确读取其中所含的体积,从而允许对胃带进行闭环控制。