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公开(公告)号：US4838860A
公开(公告)日：1989-06-13
申请号：US67700
申请日：1987-06-26
IPC分类号： A61M5/142
CPC分类号： A61M5/1422 , A61M2205/12 , Y10S128/12
摘要： An infusion pump for administering fluid from a fluid source to a patient comprises a base member having an electric motor for driving a fluid pump housed within a cassette detachably mountable on the base and connectable to the motor. The cassette houses a reciprocative piston and cylinder assembly which both pumps fluid to the patient while simultaneously drawing fluid from the fluid source so as to maintain a continuous flow rate of fluid to the patient. The cassette also houses deformably closable pairs of tubes connecting each of the pump's two fluid chambers to the cassette inlet and outlet respectively to provide the necessary valving to produce continuous flow in cooperation with the reciprocative piston and cylinder assembly. The fluid flow rate is adjustably controlled by a microcomputer which regulates the motor by repeatedly initiating electric motor driving pulses at a predetermined time rate, and terminating them in response to the advancement of the motor beyond one of a plurality of predetermined positions so as to maximize accuracy and reliability of flow rate while compatibly maximizing the power efficiency of the motor for portable applications requiring a battery power source.
摘要翻译： 一种用于将流体从流体源施用到患者的输液泵包括具有用于驱动容纳在可拆卸地安装在基座上并可连接到马达的盒内的流体泵的电动马达的基座构件。 所述盒装有往复式活塞和气缸组件，它们将流体泵送到患者身上同时从流体源抽出流体，以保持流体到患者的连续流速。 盒式磁带还容纳可变形地闭合的一对管，其将泵的两个流体室中的每一个分别连接到盒的入口和出口，以提供必要的阀，以与往复式活塞和气缸组件配合产生连续的流动。 流体流量由微型计算机调节，该微型计算机通过以预定的时间速率反复启动电动机驱动脉冲来调节电动机，并且响应于电动机超前于多个预定位置之一而终止它们， 流量的准确性和可靠性，同时最大限度地提高了需要电池电源的便携式应用的电机的功率效率。
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公开(公告)号：US4898579A
公开(公告)日：1990-02-06
申请号：US201951
申请日：1988-06-03
IPC分类号： A61M5/142
CPC分类号： A61M5/1422 , A61M2205/12 , Y10S128/12
摘要： An infusion pump for administering fluid from a fluid source to a patient comprises a base member having an electric motor for driving a fluid pump housed within a cassette detachably mountable on the base and connectable to the motor. The cassette houses a reciprocative piston and cylinder assembly which both pumps fluid to the patient while simultaneously drawing fluid from the fluid source so as to maintain a continuous flow rate of fluid to the patient. The cassette also houses deformably closable pairs of tubes connecting each of the pump's two fluid chambers to the cassette inlet and outlet respectively to provide the necessary valving to produce continuous flow in cooperation with the reciprocative piston and cylinder assembly. The fluid flow rate is adjustable controlled by a microcomputer which regulates the motor by repeatedly initiating electric motor driving pulses at a predetermined time rate, and terminating them in response to the advancement of the motor beyond one of a plurality of predetermined positions so as to maximize accuracy and reliability of flow rate while compatibly maximizing the power efficiency of the motor for portable applications requiring a battery power source.
摘要翻译： 一种用于将流体从流体源施用到患者的输液泵包括具有用于驱动容纳在可拆卸地安装在基座上并可连接到马达的盒内的流体泵的电动马达的基座构件。 所述盒装有往复式活塞和气缸组件，它们将流体泵送到患者身上同时从流体源抽出流体，以保持流体到患者的连续流速。 盒式磁带还容纳可变形地闭合的一对管，其将泵的两个流体室中的每一个分别连接到盒的入口和出口，以提供必要的阀，以与往复式活塞和气缸组件配合产生连续的流动。 流体流量由微型计算机调节，该微型计算机通过以预定的时间速率重复地启动电动机驱动脉冲来调节电动机，并且响应于电动机超前于多个预定位置之一而终止它们， 流量的准确性和可靠性，同时最大限度地提高了需要电池电源的便携式应用的电机的功率效率。
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