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公开(公告)号：US5370664A
公开(公告)日：1994-12-06
申请号：US104441
申请日：1993-08-10
CPC分类号： A61N1/39 , A61N1/3912 , G01K1/18 , A61N1/3906
摘要： Circuits for controlling the current flow of an energy pulse as a function of the temperature of a resistive element in the circuit so that the current flow varies over time in accordance with a predetermined waveform. The circuits include at least one negative temperature coefficient thermistor connected between an energy storage device and connectors for delivering energy stored in the storage source to an external load. In one embodiment of the invention the circuit includes a second thermistor for shunting a residual portion of the current delivered by an energy pulse away from the external load. In another embodiment of the circuit, a small inductive device is used for adjusting the shape of the predetermined waveform. In yet another embodiment of the device, a plurality of thermistors arranged in a bridge-like configuration are used to control the current of the energy pulse so that its waveform is biphasic. Heat sinks may be attached to the thermistors for cooling the latter so as to increase the rate at which energy pulses may be delivered by the circuits.
摘要翻译： 用于控制作为电路中的电阻元件的温度的函数的能量脉冲的电流流动的电路，使得电流根据预定波形随时间变化。 电路包括连接在能量存储装置和连接器之间的至少一个负温度系数热敏电阻器，用于将存储在存储源中的能量传送到外部负载。 在本发明的一个实施例中，电路包括第二热敏电阻，用于分流由能量脉冲输送的电流的剩余部分远离外部负载。 在电路的另一个实施例中，使用小的电感器件来调节预定波形的形状。 在器件的又一个实施例中，以桥状结构布置的多个热敏电阻用于控制能量脉冲的电流，使得其波形是双相的。 散热器可以附接到热敏电阻器以冷却热敏电阻器，以便增加电路可能输送能量脉冲的速率。
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公开(公告)号：US5275157A
公开(公告)日：1994-01-04
申请号：US685132
申请日：1991-04-12
CPC分类号： A61N1/39 , A61N1/3912 , G01K1/18 , A61N1/3906
摘要： Circuits for controlling the current flow of an energy pulse as a function of the temperature of a resistive element in the circuit so that the current flow varies over time in accordance with a predetermined waveform. The circuits include at least one negative temperature coefficient thermistor connected between an energy storage device and connectors for delivering energy stored in the storage source to an external load. In one embodiment of the invention the circuit includes a second thermistor for shunting a residual portion of the current delivered by an energy pulse away from the external load. In another embodiment of the circuit, a small inductive device is used for adjusting the shape of the predetermined waveform. In yet another embodiment of the device, a plurality of thermistors arranged in a bridge-like configuration are used to control the current of the energy pulse so that its waveform is biphasic. Heat sinks may be attached to the thermistors for cooling the latter so as to increase the rate at which energy pulses may be delivered by the circuits.
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