公开(公告)号：US20120271191A1

公开(公告)日：2012-10-25

申请号：US13533919

申请日：2012-06-26

申请人： Allen Farquhar

发明人： Allen Farquhar

IPC分类号： A61B5/0488

CPC分类号： A61B5/04001 ,  A61B5/0488 ,  A61B5/4041 ,  A61B5/407 ,  A61N1/08

摘要： The present invention relates generally to an algorithm aimed at neurophysiology monitoring, and more particularly to an algorithm capable of quickly finding stimulation thresholds over multiple channels of a neurophysiology monitoring system.

摘要翻译： 本发明一般涉及一种旨在进行神经生理学监测的算法，更具体地说，涉及一种能够在神经生理学监测系统的多个通道上快速找到刺激阈值的算法。

公开(公告)号：US06213972B1

公开(公告)日：2001-04-10

申请号：US09148456

申请日：1998-09-04

申请人： Robert D. Butterfield ,  Allen Farquhar

发明人： Robert D. Butterfield ,  Allen Farquhar

IPC分类号： A61M3100

CPC分类号： A61M5/16859

摘要： Flow parameters in a fluid delivery assembly are determined by monitoring pressure responses and processing those responses along with information regarding the fluid flow. In one aspect, a processor controls the pump to pump flow quantities in accordance with a pseudorandom code. Portions of the resulting pressure signal sensed are then decoded in accordance with the pseudorandom code. An estimate of the equilibrium pressure is generated from the decoded pressure values, while a summation of the pressure samples is generated from the undecoded pressure signals. The resistance to fluid flow of the system is determined from the estimated equilibrium pressure and pressure summation. For low flow rates, a processor controls the pump to pump fluid in a series of fluid boluses, with each fluid bolus delivered in the beginning of a separate timeslot. The equilibrium pressure is measured at the end of each timeslot, and a summation of the pressure samples is generated from the pressure signals. For high flow rates, the pump is controlled to vary the flow rate and the change in pressure is divided by the change in flow to directly determine the resistance. A resistance display continuously displays the resistance of the system. The pseudorandom coding and decoding can be used to filter out pressure-response crosstalk caused by multiple fluid infusion segments feeding into a common line.

摘要翻译： 流体输送组件中的流量参数通过监测压力响应并且处理这些响应以及关于流体流动的信息来确定。 在一个方面，处理器控制泵根据伪随机码来泵送流量。 然后根据伪随机码解码所感测的所得压力信号的部分。 从解码的压力值产生平衡压力的估计，而从未解码的压力信号产生压力样本的总和。 根据估计的平衡压力和压力求和确定系统对流体流动的阻力。 对于低流量，处理器控制泵以一系列流体喷射泵送流体，每个流体推注在单独的时隙开始时传送。 在每个时隙的末端测量平衡压力，并从压力信号产生压力样本的总和。 对于高流量，泵被控制以改变流量，并且压力变化除以流量的变化以直接确定阻力。 电阻显示连续显示系统的电阻。 伪随机编码和解码可用于滤除由多个流体输注段馈送到公共线中引起的压力 - 响应串扰。

公开(公告)号：US08401632B1

公开(公告)日：2013-03-19

申请号：US12626880

申请日：2009-11-27

申请人： Robert Stone ,  Allen Farquhar

发明人： Robert Stone ,  Allen Farquhar

IPC分类号： A61B5/00

CPC分类号： A61B5/0488 ,  A61B5/7221

摘要： The present invention involves a system and methods for performing neurophysiologic assessments including, but not necessarily limited to, pedicle integrity assessments, neuromuscular pathway assessments, nerve proximity assessments, and spinal cord assessments, and methods for filtering EMG signal data to reject noise.

摘要翻译： 本发明涉及用于执行神经生理学评估的系统和方法，包括但不一定限于椎弓根完整性评估，神经肌肉途径评估，神经邻近评估和脊髓评估，以及用于过滤EMG信号数据以拒绝噪声的方法。

公开(公告)号：US20050192529A1

公开(公告)日：2005-09-01

申请号：US10656424

申请日：2003-09-05

申请人： Robert Butterfield ,  Allen Farquhar

发明人： Robert Butterfield ,  Allen Farquhar

IPC分类号： G01N29/02 ,  A61M5/00 ,  A61M5/36 ,  G01N29/032 ,  G01N29/38 ,  A61M31/00 ,  A61M1/00

CPC分类号： G01N29/38 ,  A61M5/14228 ,  A61M5/365 ,  G01N29/032 ,  G01N2291/02433 ,  Y10S128/13

摘要： The concentration of air in a fluid delivery line is determined by monitoring output signals corresponding to the amount of air detected in the fluid and processing those signals along with information as to the time or total volume of fluid dispensed since each signal was produced. The processor determines an air concentration value based on the received signal values, with the air concentration value determined by giving greater weight to more recent signal values. Where the air concentration value exceeds a predetermined value, an alarm signal may be activated or fluid delivery may be stopped. The processor also may determine a secondary air concentration value, which may be determined from the raw signal values instead of the weighted signal values. Where the secondary air concentration value exceeds a second predetermined threshold, an alarm signal may be activated or fluid delivery may be stopped.

摘要翻译： 流体输送管线中的空气浓度通过监测对应于在流体中检测到的空气量的输出信号并且处理这些信号以及关于由于每个信号产生而分配的流体的时间或总体积的信息来确定。 处理器基于接收到的信号值来确定空气浓度值，其中通过对更近的信号值给予更大的权重来确定空气浓度值。 当空气浓度值超过预定值时，可以启动报警信号或停止流体输送。 处理器还可以确定二次空气浓度值，其可以根据原始信号值而不是加权信号值来确定。 在二次空气浓度值超过第二预定阈值的情况下，可以启动报警信号或者可以停止流体输送。

公开(公告)号：US08206312B2

公开(公告)日：2012-06-26

申请号：US11994409

申请日：2006-09-22

申请人： Allen Farquhar

发明人： Allen Farquhar

IPC分类号： A61B5/05 ,  A61N1/00

CPC分类号： A61B5/04001 ,  A61B5/0488 ,  A61B5/4041 ,  A61B5/407 ,  A61N1/08

摘要： The present invention relates generally to an algorithm aimed at neurophysiology monitoring, and more particularly to an algorithm capable of quickly finding stimulation thresholds over multiple channels of a neurophysiology monitoring system.

摘要翻译： 本发明一般涉及一种旨在进行神经生理学监测的算法，更具体地说，涉及一种能够在神经生理学监测系统的多个通道上快速找到刺激阈值的算法。

公开(公告)号：US20080167574A1

公开(公告)日：2008-07-10

申请号：US11994409

申请日：2006-09-22

申请人： Allen Farquhar

发明人： Allen Farquhar

IPC分类号： A61B5/05

CPC分类号： A61B5/04001 ,  A61B5/0488 ,  A61B5/4041 ,  A61B5/407 ,  A61N1/08

摘要： The present invention relates generally to an algorithm aimed at neurophysiology monitoring, and more particularly to an algorithm capable of quickly finding stimulation thresholds over multiple channels of a neurophysiology monitoring system.

摘要翻译： 本发明一般涉及一种旨在进行神经生理学监测的算法，更具体地说，涉及一种能够在神经生理学监测系统的多个通道上快速找到刺激阈值的算法。

公开(公告)号：US5803917A

公开(公告)日：1998-09-08

申请号：US688698

申请日：1996-07-30

申请人： Robert D. Butterfield ,  Allen Farquhar

发明人： Robert D. Butterfield ,  Allen Farquhar

IPC分类号： A61M5/00 ,  A61M5/142 ,  A61M5/168 ,  A61M31/00

CPC分类号： A61M5/16859

摘要： Flow parameters in a fluid delivery assembly are determined by monitoring pressure responses and processing those responses along with information regarding the fluid flow. In one aspect, a processor controls the pump to pump flow quantities in accordance with a pseudorandom code. Portions of the resulting pressure signal sensed are then decoded in accordance with the pseudorandom code. An estimate of the equilibrium pressure is generated from the decoded pressure values, while a summation of the pressure samples is generated from the undecoded pressure signals. The resistance to fluid flow of the system is determined from the estimated equilibrium pressure and pressure summation. For low flow rates, a processor controls the pump to pump fluid in a series of fluid boluses, with each fluid bolus delivered in the beginning of a separate timeslot. The equilibrium pressure is measured at the end of each timeslot, and a summation of the pressure samples is generated from the pressure signals. For high flow rates, the pump is controlled to vary the flow rate and the change in pressure is divided by the change in flow to directly determine the resistance. A resistance display continuously displays the resistance of the system. The pseudorandom coding and decoding can be used to filter out pressure-response crosstalk caused by multiple fluid infusion segments feeding into a common line.

摘要翻译： 流体输送组件中的流量参数通过监测压力响应并且处理这些响应以及关于流体流动的信息来确定。 在一个方面，处理器控制泵根据伪随机码来泵送流量。 然后根据伪随机码解码所感测的所得压力信号的部分。 从解码的压力值产生平衡压力的估计，而从未解码的压力信号产生压力样本的总和。 根据估计的平衡压力和压力求和确定系统对流体流动的阻力。 对于低流量，处理器控制泵以一系列流体喷射泵送流体，每个流体推注在单独的时隙开始时传送。 在每个时隙的末端测量平衡压力，并从压力信号产生压力样本的总和。 对于高流量，泵被控制以改变流量，并且压力变化除以流量的变化以直接确定阻力。 电阻显示连续显示系统的电阻。 伪随机编码和解码可用于滤除由多个流体输注段馈送到公共线中引起的压力 - 响应串扰。