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    • 8. 发明授权
    • Heart wall actuation device for the natural heart
    • 心墙致动装置为天然心脏
    • US07361191B2
    • 2008-04-22
    • US10618986
    • 2003-07-14
    • David Boyd Melvin
    • David Boyd Melvin
    • A61M1/10
    • A61M1/122A61F2/02A61F2/2481A61M1/1008A61M1/1046A61M1/1055A61M1/106A61M1/1068A61M1/12
    • An actuation system for assisting the operation of the natural heart comprises a framework for interfacing with a natural heart, through the wall of the heart, which includes an internal framework element configured to be positioned within the interior volume of a heart and an external framework element configured to be positioned proximate an exterior surface of the heart. The internal framework is flexibly suspended with respect to the external frame. An actuator system is coupled to the framework and configured to engage an exterior surface of the heart. The actuator system comprises an actuator band extending along a portion of a heart wall exterior surface. The actuator band is selectively movable between an actuated state and a relaxed state and is operable, when in the actuated state, to assume a predetermined shape and thereby indent a portion of the heart wall to effect a reduction in the volume of the heart. A drive apparatus is coupled to the actuator band and is operable for selectively moving the actuator band between the relaxed and actuated states to achieve the desired assistance of the natural heart.
    • 用于辅助自然心脏的操作的致动系统包括用于通过心脏壁与自然心脏接口的框架,其包括构造成定位在心脏的内部体积内的内部框架元件和外部框架元件 被配置为定位在心脏的外表面附近。 内部框架相对于外框灵活地悬挂。 致动器系统联接到框架并且构造成接合心脏的外表面。 致动器系统包括沿着心壁外表面的一部分延伸的致动器带。 致动器带可以在致动状态和松弛状态之间选择性地移动,并且当处于致动状态时,可以使其呈现预定形状,从而缩小心脏壁的一部分以实现心脏体积的减小。 驱动装置联接到致动器带,并且可操作用于在致动状态之间选择性地移动致动器带,以实现自然心脏的期望协助。
    • 10. 发明申请
    • Functional on-chip pressure generator using solid chemical propellant
    • 使用固体化学推进剂的功能片上压力发生器
    • US20050232817A1
    • 2005-10-20
    • US10946818
    • 2004-09-22
    • Chong AhnChein-Chong HongSuresh MurugesanSanghyo KimGregory Beaucage
    • Chong AhnChein-Chong HongSuresh MurugesanSanghyo KimGregory Beaucage
    • B01L3/00
    • B01L3/50273B01L2300/0816B01L2400/0442B01L2400/046
    • A functional on-chip pressure source using a solid propellant chemical material is disclosed which, upon heating to a critical temperature, liberates a precise amount of gas which, when liberated within an enclosed cavity coupled to a liquid in a microfluidic channel, raises the pressure and causes precise displacement of the liquid. The functional on-chip pressure source may be easily integrated with a disposable biochip, may be fabricated using low-cost, high volume manufacturing techniques, uses very low power, and may provide a dynamically variable output pressure across a broad spectrum of pressures. Embodiments of the present invention address significant challenges in the development of disposable microfluidic biochips including providing a reliable solution for pumping liquids in a microfluidic system and immediately applying the solution to a variety of microfluidic biochip applications.
    • 公开了使用固体推进剂化学材料的功能性片上压力源,其在加热至临界温度时释放精确量的气体,当在与微流体通道中的液体耦合的封闭空腔内释放时,气体升高压力 并导致液体的精确位移。 功能片上压力源可以容易地与一次性生物芯片集成,可以使用低成本,高容量制造技术制造,使用非常低的功率,并且可以在宽范围的压力下提供动态可变的输出压力。 本发明的实施例解决了一次性微流体生物芯片开发中的重大挑战,包括提供用于在微流体系统中泵送液体的可靠解决方案,并立即将该解决方案应用于各种微流体生物芯片应用。