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    • 5. 发明授权
    • Multiple power supply power amplifier circuit
    • 多电源功率放大电路
    • US4581590A
    • 1986-04-08
    • US669298
    • 1984-11-08
    • Richard A. Sunderland
    • Richard A. Sunderland
    • H03F1/02H03F3/16
    • H03F1/0244
    • An amplifier circuit with serially coupled output stages coupled to different level voltage supplies wherein at least the higher voltage-supplied output stages comprise a field effect transistor (FET) device is disclosed. In one embodiment a floating power supply is coupled between V.sub.in and the gate of the FET to provide turn on of the FET at the proper crossover voltage. In another embodiment, control of the FET is provided by a transistor circuit which causes the FET to turn on in response to the instantaneous voltage drop across the lower voltage-supplied output stage.
    • 具有耦合到不同电平电压源的串联耦合输出级的放大器电路,其中至少提供了较高电压供应的输出级包括场效应晶体管(FET)器件。 在一个实施例中,浮动电源耦合在Vin和FET的栅极之间,以便以合适的交叉电压提供FET的导通。 在另一个实施例中,FET的控制由晶体管电路提供,晶体管电路响应于低电压提供的输出级上的瞬时电压降使FET导通。
    • 6. 发明授权
    • Efficient power amplifier with staggered power supply voltages
    • 高效的功率放大器具有交错电源电压
    • US4319199A
    • 1982-03-09
    • US106075
    • 1979-12-20
    • Richard A. Sunderland
    • Richard A. Sunderland
    • H03F1/02H03F3/20H03F3/21H03F3/04
    • H03F3/211H03F1/0244
    • An amplifier which minimizes the power loss in its output stages is described. This is achieved by operating the several output stages from separate power supplies operating at staggered voltage levels. The output stages, which have parallel signal paths, are unity-gain emitter follower circuits connected so that the follower operating from the lowest usable power supply voltage always delivers the load current. Control circuitry shifts the load current from one output stage to another based upon the instantaneous relationship between supply voltages and the output voltage. The shift between output stages introduces very little signal distortion into the output.
    • 描述了在其输出级中最小化功率损耗的放大器。 这是通过以交错电压电平工作的单独电源操作多个输出级来实现的。 具有并行信号路径的输出级是连接的单位增益射极跟随器电路,使得从最低可用电源电压工作的跟随器总是传送负载电流。 控制电路根据电源电压和输出电压之间的瞬时关系,将负载电流从一个输出级转移到另一个输出级。 输出级之间的偏移将很少的信号失真引入输出。
    • 7. 发明授权
    • Electro-convulsive therapy (ECT) system with enhanced safety features
    • 具有增强安全功能的电惊厥治疗(ECT)系统
    • US5755744A
    • 1998-05-26
    • US934238
    • 1997-09-19
    • John B. ShawRichard A. Sunderland
    • John B. ShawRichard A. Sunderland
    • A61N1/08A61N1/38
    • A61N1/08A61N1/38
    • An electro-convulsive therapy (ECT) system includes both hardware and software safety detectors and monitors, including a pulse generator that generates a pulse train of a plurality of pulses with parameters specified by the user. The safety monitors monitor these user-specified parameters as well as other important pulse parameters both during treatment of a patient and prior to treatment in order to ensure that the system is operating according to specification and, therefore, will not injure the patient. The pulse generator is responsive to the safety monitors in that if any of the safety detectors detect a parameter that is out of tolerance, the safety monitor disables the pulse generator so that no further pulses are delivered to the patient. The safety detectors detect plurality of pulse characteristics including pulse width, frequency, voltage, current, treatment duration, as well as energy. In addition to these real time safety checks, the system includes a pre-treatment arming routine that applies a pre-treatment ECT pulse train to an internal load and monitors these same parameters during this internal test. If all of these parameters are within tolerance, the system moves to an armed state in which the user can proceed to apply an ECT treatment pulse train. If any one of these safety checks fails, however, the system does not arm and, therefore, prohibits treatment.
    • 电痉挛治疗(ECT)系统包括硬件和软件安全检测器和监视器,包括脉冲发生器,其产生具有由用户指定的参数的多个脉冲的脉冲串。 安全监视器在治疗患者期间和治疗之前监视这些用户指定的参数以及其他重要的脉搏参数,以确保系统按照规格操作,因此不会伤害患者。 脉冲发生器响应于安全监视器,因为如果任何安全检测器检测到超出公差的参数,则安全监视器禁用脉冲发生器,使得不再向患者传送进一步的脉冲。 安全检测器检测包括脉冲宽度,频率,电压,电流,治疗持续时间以及能量的多个脉冲特性。 除了这些实时安全检查之外,该系统还包括一个预处理布防程序,该预处理布防程序在内部测试期间将预处理ECT脉冲序列应用于内部负载并监视这些相同的参数。 如果所有这些参数都在公差范围之内,则系统进入到用户可以继续应用ECT处理脉冲序列的布防状态。 然而,如果这些安全检查中的任何一个失败,则系统不会手臂,因此禁止治疗。
    • 8. 发明授权
    • Ambulatory support device for a fluid delivery system
    • 流体输送系统的动态支撑装置
    • US5236004A
    • 1993-08-17
    • US819300
    • 1992-01-09
    • Richard A. SunderlandFrederick C. DenoJohn A. Lane
    • Richard A. SunderlandFrederick C. DenoJohn A. Lane
    • A61M5/14
    • A61M5/1413A61M5/1415A61M2005/1416A61M2205/6018A61M2209/08Y10S128/12Y10T137/6851Y10T137/6962
    • The present invention relates to a support device for use with a fluid delivery system which includes a fluid delivery set and an infusion pump. The support device allows simple attachment of various types of fluid delivery sets and infusion pumps thereto and is adapted for use with bed ridden patients in a traditional manner, or for ambulatory patient use. The support device includes a compartment for securely holding an infusion pump and a separate compartment for securely holding a fluid container of the fluid delivery set. The device further includes an elongate channel into which the tubing of the fluid delivery set can be inserted and subsequently protected from kinking or inadvertent occlusion, and is adapted for use with rigid bottle, flexible bag, burette, spike sets, or other standard types of fluid delivery sets. The device may be used on an infusion pole in a standard manner, placed on a horizontal surface such as a table, or enclosed in a carrying case for ambulatory use.
    • 本发明涉及一种与包括流体输送组和输液泵的流体输送系统一起使用的支撑装置。 支撑装置允许将各种类型的流体输送装置和输注泵简单地附接到其上,并且适于以传统方式与卧床患者一起使用,或者用于动静的患者使用。 支撑装置包括用于牢固地保持输液泵的隔室和用于牢固地保持流体输送装置的流体容器的单独的隔室。 该装置还包括细长通道,流体输送组件的管道可插入该细长通道中,并且随后可保护其免受扭结或无意的闭塞,并适用于刚性瓶,柔性袋,滴定管,尖钉组或其他标准类型 流体输送装置。 该装置可以以标准方式在输液杆上使用,放置在诸如桌子的水平表面上,或者封闭在便携式箱体中用于流动使用。