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公开(公告)号：US07082843B2
公开(公告)日：2006-08-01
申请号：US11205929
申请日：2005-08-17
IPC分类号： G01F1/22
CPC分类号： G01F1/383 , A61M5/16813 , A61M5/16854 , A61M5/16886 , G01F1/363 , G01F1/40
摘要： The invention is directed to a device for obtaining flow rate measurements including a sensor assembly and a housing. The sensor assembly includes a body defining a first fluid flow passage having an inlet, an outlet, a flow restricting element in the first fluid flow passage between the inlet and the outlet, an upstream fluid pressure sensor, a downstream fluid pressure sensor, an upstream signal contact connected to the upstream fluid pressure sensor, and a downstream signal contact connected to the downstream fluid pressure sensor. The housing has an upstream portion defining an upstream port, a downstream portion defining a downstream port, and a probe access port configured to provide access of a probe to at least one of the upstream signal contact and downstream signal contact. The housing can also define a second fluid flow passage in parallel with the first fluid flow passage. The device can be disposable.
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公开(公告)号：US06981960B2
公开(公告)日：2006-01-03
申请号：US10727702
申请日：2003-12-04
申请人： Steve T. Cho , Gene E. Clark
发明人： Steve T. Cho , Gene E. Clark
IPC分类号： A61M31/00
CPC分类号： A61M5/16881 , A61M5/16804 , A61M5/172
摘要： In a cosed-loop process, a controller uses a flow sensor to monitor the flow of a medicinal fluid being infused into a patient, to achieve a desired rate of flow. A relatively inexpensive peristaltic pump or electronically controlled valve can be used to vary the flow of the medicinal fluid through a fluid line. A Y site within the fluid line includes an integral flow sensor having an orifice. The flow sensor includes proximal and distal pressure sensors disposed on opposite sides of the orifice to monitor the distal and proximal pressure, producing a signal indicative of the rate of flow of the medicinal fluid through the fluid line. A signal produced by the controller is input to a motor driving the pump or to the valve to vary the rate of flow as required to achieve the desired infusion rate of the medicinal fluid.
摘要翻译： 在旋转环路过程中，控制器使用流量传感器来监测被输入到患者体内的药液的流动，以达到所需的流速。 可以使用相对便宜的蠕动泵或电子控制阀来改变药液通过流体管线的流动。 流体管线内的Y位置包括具有孔口的一体式流量传感器。 流量传感器包括设置在孔的相对侧上的近端和远端压力传感器，以监测远端和近端压力，产生指示药液通过流体管线的流速的信号。 由控制器产生的信号被输入到驱动泵或阀的马达，以根据需要改变流速以实现药液的所需输液速率。
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公开(公告)号：US06964204B2
公开(公告)日：2005-11-15
申请号：US10978866
申请日：2004-10-29
CPC分类号： G01F1/383 , A61M5/16813 , A61M5/16854 , A61M5/16886 , G01F1/363 , G01F1/40
摘要： The invention is directed to a device for obtaining flow rate measurements including a sensor assembly and a housing. The sensor assembly includes a body defining a first fluid flow passage having an inlet, an outlet, a flow restricting element in the first fluid flow passage between the inlet and the outlet, an upstream fluid pressure sensor, a downstream fluid pressure sensor, an upstream signal contact connected to the upstream fluid pressure sensor, and a downstream signal contact connected to the downstream fluid pressure sensor. The housing has an upstream portion defining an upstream port, a downstream portion defining a downstream port, and a probe access port configured to provide access of a probe to at least one of the upstream signal contact and downstream signal contact. The housing can also define a second fluid flow passage in parallel with the first fluid flow passage. The device can be disposable.
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公开(公告)号：US06813964B1
公开(公告)日：2004-11-09
申请号：US10442575
申请日：2003-05-21
IPC分类号： G01F137
CPC分类号： G01F1/383 , A61M5/16813 , A61M5/16854 , A61M5/16886 , G01F1/363 , G01F1/40
摘要： The invention is directed to a device for obtaining flow rate measurements including a sensor assembly and a housing. The sensor assembly includes a body defining a first fluid flow passage having an inlet, an outlet, a flow restricting element in the first fluid flow passage between the inlet and the outlet, an upstream fluid pressure sensor, a downstream fluid pressure sensor, an upstream signal contact connected to the upstream fluid pressure sensor, and a downstream signal contact connected to the downstream fluid pressure sensor. The housing has an upstream portion defining an upstream port, a downstream portion defining a downstream port, and a probe access port configured to provide access of a probe to at least one of the upstream signal contact and downstream signal contact. The housing can also define a second fluid flow passage in parallel with the first fluid flow passage. The device can be disposable.
摘要翻译： 本发明涉及一种用于获得包括传感器组件和壳体的流量测量的装置。 传感器组件包括主体，其限定第一流体流动通道，该第一流体流动通道在入口和出口之间的第一流体流动通道中具有入口，出口，流动限制元件，上游流体压力传感器，下游流体压力传感器，上游 连接到上游流体压力传感器的信号触点和连接到下游流体压力传感器的下游信号触点。 壳体具有限定上游端口的上游部分，限定下游端口的下游部分和被配置为提供探头到达上游信号接触和下游信号接触中的至少一个的探测器访问端口。 壳体还可以限定与第一流体流动通道平行的第二流体流动通道。 该设备可以是一次性的。
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公开(公告)号：US06685668B1
公开(公告)日：2004-02-03
申请号：US09628846
申请日：2000-07-31
申请人： Steve T. Cho , Gene E. Clark
发明人： Steve T. Cho , Gene E. Clark
IPC分类号： A61M3100
CPC分类号： A61M5/16881 , A61M5/16804 , A61M5/172
摘要： In a closed-loop process, a controller uses a flow sensor to monitor the flow of a medicinal fluid being infused into a patient, to achieve a desired rate of flow. A relatively inexpensive peristaltic pump or electronically controlled valve can be used to vary the flow of the medicinal fluid through a fluid line. A Y site within the fluid line includes an integral flow sensor having an orifice. The flow sensor includes proximal and distal pressure sensors disposed on opposite sides of the orifice to monitor the distal and proximal pressure, producing a signal indicative of the rate of flow of the medicinal fluid through the fluid line. A signal produced by the controller is input to a motor driving the pump or to the valve to vary the rate of flow as required to achieve the desired infusion rate of the medicinal fluid.
摘要翻译： 在闭环过程中，控制器使用流量传感器来监测注入患者体内的药液的流量，以达到所需的流速。 可以使用相对便宜的蠕动泵或电子控制阀来改变药液通过流体管线的流动。 流体管线内的Y位置包括具有孔口的一体式流量传感器。 流量传感器包括设置在孔的相对侧上的近端和远端压力传感器，以监测远端和近端压力，产生指示药液通过流体管线的流速的信号。 由控制器产生的信号被输入到驱动泵或阀的马达，以根据需要改变流速以实现药液的所需输液速率。
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公开(公告)号：US5994876A
公开(公告)日：1999-11-30
申请号：US948137
申请日：1997-10-09
申请人： David Canny , Gene E. Clark , Rupert Hsu , Rudolph J. Maske
发明人： David Canny , Gene E. Clark , Rupert Hsu , Rudolph J. Maske
CPC分类号： G01R31/3648 , G01R31/3606 , Y10S320/21
摘要： An electronic circuit and a method for accurately measuring intermittent current pulses supplied by a storage battery to energize a load. In the preferred embodiment, an analog integrator accumulates current pulses in response to a voltage drop across a sense resistor that is connected in series between the storage battery and the load. The voltage drop is proportional to the flow of current from the battery through the load. The output of the integrator is filtered with a low pass filter to block high frequency noise, and the output of the filter is coupled to an analog to digital (A/D) converter that transforms the filtered analog signal into a corresponding digital signal. The output of the A/D converter is supplied to a port of a processor. The processor provides a signal to actuate a reset switch coupled across the integrator. When closed at the end of each integration time period, this switch zeroes the output of the analog integrator. Additionally, the processor recalibrates the circuit at predefined time intervals to determine for leakage currents for improving the accuracy with which the measurement of the flow of current from the battery is determined. In the preferred embodiment, the processor samples the output of the A/D converter every 100 milliseconds. Typically, the calibration procedure is performed every 15 minutes (while the load is energized from an AC source). This measurement circuit is part of a battery management system that preferably also includes a charge circuit for recharging the battery.
摘要翻译： 一种用于精确测量由蓄电池提供的间歇电流脉冲以激励负载的电子电路和方法。 在优选实施例中，模拟积分器响应于串联连接在蓄电池和负载之间的检测电阻器上的电压降而积累电流脉冲。 电压降与电池通过负载的电流流动成比例。 积分器的输出用低通滤波器滤波以阻止高频噪声，并且滤波器的输出耦合到模数转换器（A / D），该转换器将滤波后的模拟信号转换成相应的数字信号。 A / D转换器的输出被提供给处理器的端口。 处理器提供信号以致动跨越积分器耦合的复位开关。 在每个积分时间段结束时闭合时，该开关将模拟积分器的输出置零。 此外，处理器以预定的时间间隔重新校准电路，以确定泄漏电流，以提高确定来自电池的电流测量的精度。 在优选实施例中，处理器每100毫秒对A / D转换器的输出进行采样。 通常，每15分钟执行校准程序（当负载从AC电源通电时）。 该测量电路是电池管理系统的一部分，其优选地还包括用于为电池充电的充电电路。
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