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    • 9. 发明申请
    • Bi-directional infuser pump with volume braking for hydraulically controlling an adjustable gastric band
    • 具有体积制动的双向输液泵,用于液压控制可调节的胃束带
    • US20050277960A1
    • 2005-12-15
    • US10857763
    • 2004-05-28
    • William HasslerDaniel Dlugos
    • William HasslerDaniel Dlugos
    • A61B17/00A61F2/00A61F5/00A61B17/08
    • A61F2/004A61F5/0003A61F5/0053
    • An implantable artificial sphincter system provides long-term adjustment via transcutaneous energy transfer (TET), minimizing invasive adjustment through adding or removing fluid via a syringe. An infuser device provides bi-directional fluid transfer via a flexible conduit to a sphincter band, such as a gastric band, by a combination of thermodynamic actuation and a piezo-electrically disengaged drum brake assembly that thereby achieves a desirable small volume device. A propellant within a propellant cavity surrounds a metal bellows accumulator biased at body temperature to either expand or collapse the bellows accumulator with the opposite direction of movement effected by a thermal element that heats in combination with a negatively-biased propellant or cools in combination with a positively-biased propellant. A drum brake assembly locks the metal bellows accumulator in place between adjustments by thermodynamic actuation by activating piezo-electric stack actuators that disengage calipers from a brake drum attached to the bellows accumulator.
    • 可植入人造括约肌系统通过经皮能量转移(TET)提供长期调节,通过通过注射器添加或去除流体来最小化侵入性调节。 输注器装置通过热力学致动和压电式脱开的鼓式制动器组合的组合,通过柔性导管将双向流体传递到括约肌带,例如胃带,从而实现期望的小体积装置。 推进剂腔内的推进剂围绕在体温偏压的金属波纹管蓄能器,以使波纹管蓄能器膨胀或折叠,其中相反的运动方向受到与负偏压推进剂组合加热的冷元件或与 积极偏向的推进剂。 鼓式制动器组件通过激活将卡钳与附接到波纹管蓄能器的制动鼓分离的压电堆栈致动器,通过热力学致动将金属波纹管蓄能器锁定在调节之间。