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    • 96. 发明授权
    • Pressure pumping and priming pump apparatus
    • 压力泵和起动泵装置
    • US4392791A
    • 1983-07-12
    • US300412
    • 1981-09-08
    • Harold Mandroian
    • Harold Mandroian
    • F04B11/00F04B19/24F04B43/10
    • A61M5/14224F04B11/0016F04B19/24F04B43/10A61M2206/22
    • A pump apparatus for transferring precise amounts of fluid from a container to a patient has a defined volume pump chamber divided by a first diaphragm to define a first chamber and a second chamber. A pumped fluid enters the first chamber through a one-way valve as the first chamber volume increases and is exhausted through a second one-way valve as the first chamber volume decreases. A third one-way valve is coupled to the first and second one-way valves in such a way as to prevent the pumped fluid from flowing through the pump in response to a pressure head at the input or output ports. A priming chamber is divided by a second diaphragm to define first and second sections, respectively. A passageway extends between the first section and the passageway connecting the second and third one-way valves. The second section is coupled to either a pressure varying source to prime the pump by causing the diaphragm to move or to a passive pressure sink to effect damping and smoothing of the pumped fluid pressure at the output port. Control circuitry may be provided to vary the pulse repetition rate, the pulse width, or the pulse amplitude to control the pumping rate. A pressure transducer may be coupled to the second section to provide a feedback control signal to the control circuitry.
    • 用于将精确量的流体从容器传送到患者的泵装置具有由第一隔膜分隔的限定体积泵室,以限定第一室和第二室。 当第一室容积增加时,泵送的流体通过单向阀进入第一室,并且随着第一室容积减小,泵送流体通过第二单向阀排出。 第三单向阀以这样的方式联接到第一和第二单向阀,以防止泵送的流体响应于输入或输出端口处的压力头而流过泵。 起动腔由第二隔膜分开以分别限定第一和第二部分。 通道在第一部分和连接第二和第三单向阀的通道之间延伸。 第二部分耦合到压力变化的源,以通过使隔膜移动或引导到被动压力沉降器来泵送泵来实现输出端口处泵送的流体压力的阻尼和平滑。 可以提供控制电路以改变脉冲重复率,脉冲宽度或脉冲幅度以控制泵送速率。 压力传感器可以耦合到第二部分,以向控制电路提供反馈控制信号。
    • 97. 发明授权
    • Closely controllable intravenous injection system
    • 可控静脉注射系统
    • US4345594A
    • 1982-08-24
    • US186681
    • 1980-09-12
    • Jose BiseraMax H. Weil
    • Jose BiseraMax H. Weil
    • A61M5/142A61M5/00
    • A61M5/14224A61M2206/22Y10S128/12
    • An apparatus is provided for injecting fluid into a patient over an extended period of time, such as in intravenous feeding of a patient. The apparatus enables close control of injection quantity and rate while assuring an even flow into the patient. The apparatus utilizes relatively simple disposable parts. The apparatus includes an air-operated peristaltic pump which pumps a controlled amount of fluid in each cycle of operation, and a pressure moderator which receives the liquid pulses and supplies an even flow to the patient. The moderator includes a closed chamber, and a resilient tube connected to the pump and having slits that permit the escape of pumped liquid into the chamber. The peristaltic pump includes a flexible but nonresilient tube connected to the container, the nonelasticity assuring that the tube does not expand beyond a predetermined dimension when a vacuum is applied to it.
    • 提供了一种用于在延长的时间段(例如静脉内给予患者)中将流体注射到患者中的装置。 该设备能够在确保进入患者的均匀流量的同时对注射量和速率进行紧密控制。 该设备使用相对简单的一次性部件。 该装置包括一个气动蠕动泵,其在每个操作周期中泵送受控量的流体,以及压力调节器,其接收液体脉冲并向患者提供均匀的流量。 调节剂包括封闭的室和连接到泵的弹性管,并且具有允许泵送的液体逸出到室中的狭缝。 蠕动泵包括连接到容器的柔性但非弹性的管,非弹性确保了当施加真空时管不扩展超过预定尺寸。