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    • 4. 发明授权
    • Variable flow implantable infusion apparatus
    • 可变流量植入式输液装置
    • US4447224A
    • 1984-05-08
    • US419733
    • 1982-09-20
    • Leonard J. DeCant, Jr.Samir F. IdrissFrank R. Prosl
    • Leonard J. DeCant, Jr.Samir F. IdrissFrank R. Prosl
    • A61M5/00A61M5/142A61M5/14
    • A61M5/14276A61M5/16877A61M5/16886A61M2205/3523A61M2205/353A61M2205/50Y10S128/12Y10S128/13
    • Implantable variable flow infusion apparatus comprises a collapsible infusate chamber having an outlet conduit leading to the infusion site by way of series-connected fixed and variable fluid flow restrictors. The infusate in the chamber is maintained under substantially constant pressure by a nonelectric energy storage cell to establish flow from the chamber to the site. The variable restrictor is controlled by commands from a preprogrammed microprocessor and programmable memory powered by a small long-lived battery. The processor sets the variable restrictor to the proper setting to establish the correct infusate flow for the particular time of day. A pressure transducer connected across the fixed restrictor senses the pressure differential across the fixed restrictor which differential indicates actual infusate flow from the chamber. The processor samples the output from the transducer at infrequent sampling intervals and issues command signals to control the variable restrictor whenever the actual infusate flow rate differs from the preprogrammed rate so that the apparatus consumes a minimal amount of battery energy and can thus remain implanted in the body for a prolonged period. The processor can also be reprogrammed and monitored by telemetry.
    • 可植入式可变流量输注装置包括可折叠输液室,其具有通过串联连接的固定和可变流体流量限制器通向输注位置的出口导管。 腔室中的输注物通过非电储能单元保持在基本恒定的压力下,以建立从腔室到现场的流动。 可变限流器由预编程的微处理器和可编程存储器的命令控制,该存储器由小型长寿命的电池供电。 处理器将变量限制器设置为适当的设置,以便为一天中的特定时间建立正确的输入流。 连接在固定限流器上的压力传感器感测固定限流器两端的压力差,该差分表示从腔室流出的实际流体。 处理器以不频繁的采样间隔对来自换能器的输出进行采样,并发出命令信号,以便每当实际输入流量与预编程速率不同时,控制变量限制器,使得该装置消耗最小量的电池能量,并因此可以保持植入 身体长时间。 处理器也可以通过遥测进行重新编程和监控。
    • 8. 发明授权
    • Infusion apparatus and method
    • 输液装置及方法
    • US4193397A
    • 1980-03-18
    • US009756
    • 1979-02-05
    • Elton M. TuckerFrank R. Prosl
    • Elton M. TuckerFrank R. Prosl
    • A61M5/142A61M5/175A61M31/00
    • A61M5/14276A61M2205/353A61M2209/045
    • An infusion apparatus and method employs an infusate reservoir connected by way of a first flow restrictor to a mixing chamber and a second infusate reservoir connected via a second flow path having a selected restriction characteristic to the same mixing chamber so that infusate may be conveyed to the mixing chamber in different concentrations or in different types. A normally closed valve is provided in the second flow path so that the two infusates supplement one another in the mixing chamber only when the valve is opened. The reservoir and chamber volumes, infusate concentrations and chamber outlet flow rates are dimensioned to provide an integrated dosage profile suited to the patient. The apparatus can also include an accumulator with a restricted inlet in the second flow path situated between the second reservoir and the valve so that when the valve is opened, infusate flows to the mixing chamber from the second flow path only if the accumulator has been replenished from the second reservoir.
    • 输液设备和方法使用通过第一限流器连接到混合室的输注储存器和经由具有选择的限制特性的第二流动路径连接到相同混合室的第二输注储存器,使得输注物可以被输送到 不同浓度或不同类型的混合室。 在第二流路中设置常闭阀,使得仅当阀打开时,两个输液器在混合室中彼此补充。 储存器和腔室体积,输注浓度和室出口流速的尺寸被设计成提供适合于患者的综合剂量分布。 该装置还可以包括在第二流动路径中具有受限入口的蓄能器,该第二流动路径位于第二储存器和阀之间,使得当阀打开时,只有当蓄能器已经被补充时,输入物才从第二流动路径流入混合室 从第二个水库。