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    • 4. 发明授权
    • Automated fluid pressure control system
    • 自动流体压力控制系统
    • US5342298A
    • 1994-08-30
    • US923063
    • 1992-07-31
    • Mary B. MichaelsJanine C. RobinsonJohn P. ClaudeDonald L. Alden
    • Mary B. MichaelsJanine C. RobinsonJohn P. ClaudeDonald L. Alden
    • A61M5/00A61F2/958G05D16/20A61M1/00
    • A61M25/10182A61M25/1018A61M25/10184A61M2205/50Y10S128/01Y10S128/12
    • Providing fluid to an internal delivery site of a patient includes moving the fluid from a fluid reservoir through a conduit and through a delivery device at the delivery site while maintaining the fluid at a predetermined pressure. The delivery device may comprise an inflatable balloon with apertures formed in its periphery for directing the fluid into the vessel walls. Pressurized fluid is provided through the apertures of the balloon to the vessel wall. The pressure is automatically controlled to avoid both pressure spikes and unacceptable deflation of the balloon during administration of the fluid. A further feature includes comparing the pressure with the volume infused and in the event that pressure decreases while the volume infused increases beyond certain limits, the delivery of the fluid is stopped. Further features include a timer for limiting the inflation time of the delivery device and a volume detector for controlling the amount of fluid delivered. In one described embodiment, a pneumatic driver system is used to pressurize the fluid.
    • 向患者的内部递送部位提供流体包括使流体从流体储存器移动通过导管并且在输送部位通过输送装置移动,同时将流体保持在预定压力。 输送装置可以包括可膨胀气囊,其中在其周边形成有用于将流体引导到容器壁中的孔。 加压流体通过球囊的孔被提供到血管壁。 自动控制压力以避免在施用流体期间压力尖峰和气囊的不可接受的放气。 进一步的特征包括将压力与注入的体积进行比较,并且当压力降低时,注入体积增加超过某一极限,流体的输送停止。 另外的特征包括用于限制输送装置的充气时间的定时器和用于控制输送流体的量的体积检测器。 在一个所描述的实施例中,使用气动驱动器系统来加压流体。