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    • 3. 发明申请
    • FLUID DELIVERY SYSTEMS, PRESSURE ISOLATION MECHANISMS, INJECTOR CONTROL MECHANISMS, AND METHODS OF USE THEREOF
    • 流体输送系统,压力隔离机构,喷射器控制机构及其使用方法
    • WO2005110007A3
    • 2006-12-07
    • PCT/US2004011190
    • 2004-04-12
    • MEDRAD INC
    • TROMBLEY FREDERICK W IIISCHMIDT ROBERT MREILLY DAVID MHIRSCHMAN ALAN DGRIFFITHS DAVID MCALLAN GERALD WPEDRAZA LUIS AKWO JENNIEZIRPS CHRISTOPHER TBEAULIEU RODERICK H
    • A61M1/00A61M5/00A61M5/14A61M5/145A61M5/168A61M5/36A61M37/00A61M39/22A61M39/24
    • A61M5/007A61M5/14546A61M5/16827A61M5/16881A61M5/36A61M39/22A61M39/223A61M39/24A61M2005/1403A61M2205/3331A61M2205/582
    • An injector system includes a source of injection fluid, a pump device, a fluid path set disposed between the source of injection fluid and the pump device, and a fluid control device operatively associated with the fluid path set. The fluid control device is adapted to permit purging of air from the fluid path set and to stop flow of the injection fluid to a patient at substantially any pressure or flow rate generated by the pump device for delivering a sharp bolus of the injection fluid to the patient. The fluid control device is preferably part of the fluid path set between the source of injection fluid and the pump device. In another aspect, an injector system includes a powered injector, a pressurizing chamber in operative connection with the powered injector, a fluid path in fluid connection with the pressurizing chamber, and a manual control in fluid connection with the fluid path. The manual control includes at least one actuator for controlling the injector through application of force by an operator. The actuator provides tactile feedback of pressure in the fluid path to the operator via a fluid connection with the fluid path. A pressure isolation mechanism for use in a medical procedure includes a lumen, an isolation port in fluid connection with the lumen, and a valve having a first state and a second state. The first state occurs when the lumen and the isolation port are connected. The second state occurs when the lumen and the isolation port are disconnected. The lumen remains open for flow of fluid therethrough in the first state and in the second state. The valve is normally in the first state and is switchable to the second state when fluid pressure in the lumen reaches a predetermined pressure level. A pressure transducer can be in fluid connection with the isolation port of the pressure isolation mechanism. A fluid delivery system includes a manually operated syringe and a pressure isolation mechanism as described above.
    • 注射器系统包括注射流体源,泵装置,设置在注射流体源和泵装置之间的流体路径组以及与流体路径组可操作地相关联的流体控制装置。 流体控制装置适于允许从流体路径组清洗空气并且以基本上由泵装置产生的任何压力或流速停止注射流体到患者的流动,用于将喷射流体的尖锐推注物输送到 患者。 流体控制装置优选地是在注射流体源和泵装置之间设置的流体路径的一部分。 在另一方面,喷射器系统包括动力注射器,与动力注射器可操作地连接的加压室,与加压室流体连接的流体路径,以及与流体路径流体连接的手动控制。 手动控制包括至少一个执行器,用于通过操作者施加力来控制喷射器。 致动器通过与流体路径的流体连接提供到操作者的流体路径中的压力的​​触觉反馈。 用于医疗过程的压力隔离机构包括管腔,与内腔流体连接的隔离口以及具有第一状态和第二状态的阀。 当管腔和隔离口连接时,发生第一种状态。 当管腔和隔离端口断开时,发生第二种状态。 在第一状态和第二状态下,内腔保持打开以使流体流过其中。 阀通常处于第一状态,并且当内腔中的流体压力达到预定压力水平时可切换到第二状态。 压力传感器可以与压力隔离机构的隔离端口流体连接。 流体输送系统包括手动操作的注射器和如上所述的压力隔离机构。