公开(公告)号：US4627440A

公开(公告)日：1986-12-09

申请号：US751835

申请日：1985-07-05

申请人： Maynard Ramsey, III ,  James M. Muskatello ,  Rush W. Hood, Jr. ,  Richard Medero ,  Stanley K. Stephenson

发明人： Maynard Ramsey, III ,  James M. Muskatello ,  Rush W. Hood, Jr. ,  Richard Medero ,  Stanley K. Stephenson

IPC分类号： A61B5/02 ,  A61B5/022

CPC分类号： A61B5/02141 ,  A61B5/022

摘要： An inflatable, deflatable cuff, worn by the subject, is coupled to an air reservoir which is at a predetermined pressure which is above systolic pressure. The pressure head is established by a pump mechanism preferably located within the reservoir. When the reservoir is operatively coupled to the cuff, the cuff quickly inflates to a desired artery-occluding initial pressure preparatory to a following blood pressure measuring cycle of operation. The air pump resumes air flow into the reservoir when pressure within the reservoir falls below a predetermined threshold in preparation for a subsequent measurement cycle. The pump also supplies air directly to the cuff should the reservoir contents ever be inadequate to inflate fully the occluding cuff.

摘要翻译： 由受试者佩戴的可膨胀的可放气的袖带联接到处于高于收缩压的预定压力的空气储存器。 压头通过优选位于储存器内的泵机构来建立。 当储存器可操作地联接到袖带时，袖带快速膨胀到预期的动脉闭塞初始压力，以准备随后的血压测量操作周期。 当储存器内的压力下降到预定阈值以下时，空气泵恢复空气流入储存器，以准备随后的测量循环。 如果储存器内容物不足以充分充气堵塞的袖带，泵还会将空气直接提供给袖带。

公开(公告)号：US4333023A

公开(公告)日：1982-06-01

申请号：US159989

申请日：1980-06-16

申请人： Rush W. Hood, Jr.

发明人： Rush W. Hood, Jr.

IPC分类号： G06G7/24 ,  H03K3/26

CPC分类号： G06G7/24

摘要： A logarithmic converter circuit comprising an emitter-coupled pair of transistors and a pair of operational amplifiers is provided with a temperature-stabilized environment so that accurate logarithmic conversion is facilitated. One of the pair of transistors is utilized as a temperature sensor to provide a temperature control voltage, which in turn controls the power applied to a heating element disposed adjacent the pair of transistors to maintain a constant semiconductor junction temperature. The heating element may suitably be one or more transistors disposed proximate the pair of transistors on a common substrate. The absolute temperature of the sensor transistor base-to-emitter junction is established by the use of precise gain-setting components, and by adjusting the temperature reference voltage for the correct system gain.

摘要翻译： 包括发射极耦合的晶体管对和一对运算放大器的对数转换器电路具有温度稳定的环境，从而便于精确的对数转换。 一对晶体管中的一个被用作温度传感器以提供温度控制电压，其继而控制施加到邻近该对晶体管的加热元件的功率以保持恒定的半导体结温度。 加热元件可以适当地设置在公共衬底上靠近一对晶体管设置的一个或多个晶体管。 传感器晶体管基极到发射极结的绝对温度是通过使用精确的增益设置元件建立的，并通过调整温度参考电压来获得正确的系统增益。

公开(公告)号：US5746203A

公开(公告)日：1998-05-05

申请号：US721140

申请日：1996-09-26

申请人： Rush W. Hood, Jr.

发明人： Rush W. Hood, Jr.

IPC分类号： A61B5/00

CPC分类号： A61B5/00

摘要： A failsafe supervisor system for a patient monitor which integrates the functions of coordinating the turning on/off of the patient monitor with the user and the system software, alerting the operator in the event the patient monitor turns off due to a power failure, and alerting the operator to improper operation of the patient monitor system's processor hardware or software. Upon detection of such unexpected changes of state or malfunctions during operation of the patient monitor, the patient monitor is powered down in a failsafe manner to a safe state. Additionally, the failsafe supervisor system optionally allows the operator to select a service mode when turning on the monitor, thereby facilitating testing. The entire failsafe supervisor system is preferably implemented in a small one-chip microcontroller so that it can be readily incorporated into the patient monitor's microprocessor control system.

摘要翻译： 用于患者监护仪的故障安全监督系统，其将协调患者监护仪的开/关的功能与用户和系统软件相结合，在由于电源故障而使患者监护仪关闭的情况下警告操作者，并且警报 操作人员不适当地操作患者监护仪系统的处理器硬件或软件。 在患者监视器的操作期间检测到这种意外状态变化或故障时，患者监护仪以故障安全的方式断电到安全状态。 另外，故障安全管理员系统可选地允许操作员在打开监视器时选择服务模式，从而便于测试。 整个故障安全监控系统优选地实现在小型单片微控制器中，使得其可以容易地并入到患者监视器的微处理器控制系统中。

公开(公告)号：US4848901A

公开(公告)日：1989-07-18

申请号：US106747

申请日：1987-10-08

申请人： Rush W. Hood, Jr.

发明人： Rush W. Hood, Jr.

IPC分类号： A61B5/02 ,  A61B5/00 ,  A61B5/024 ,  A61B5/1455 ,  A61B5/15

CPC分类号： A61B5/14551 ,  A61B5/02433

摘要： A pulse oximeter is provided including two light emitting diodes. Each LED is energized by a unique modulation signal. Light produced by the LEDs passes through the tissue of a subject and is detected by a photodiode. The photodiode signal is separated by tuned circuits resonant at the two modulation signal frequencies and physiological information signals are recovered from the separated signals by amplitude demodulation. The inventive arrangement provides identification of back-to-back coupled LEDs and narrow band filtering for good noise immunity.

公开(公告)号：US4807631A

公开(公告)日：1989-02-28

申请号：US107138

申请日：1987-10-09

申请人： Lawrence T. Hersh ,  Richard Medero ,  Rush W. Hood, Jr.

发明人： Lawrence T. Hersh ,  Richard Medero ,  Rush W. Hood, Jr.

IPC分类号： A61B5/0245 ,  A61B5/00

CPC分类号： A61B5/14551 ,  A61B5/7242

摘要： A pulse oximetry system is provided in which LEDs of two different wavelengths illuminate tissue containing arterial blood flow. A photodiode receives light from the LEDs and produces electrical signals containing pulsatile components. The components of the two wavelengths are separated and the pulsatile waveforms are monitored until signal peaks are detected at the end of diastole. The waveforms are then integrated over the systolic interval, and the integrals are combined with the signal peak values to determine an index value. The index value is used to select a value representative of oxygen saturation from a look-up table.

公开(公告)号：US4461266A

公开(公告)日：1984-07-24

申请号：US373209

申请日：1982-04-29

申请人： Rush W. Hood, Jr. ,  Richard Medero

发明人： Rush W. Hood, Jr. ,  Richard Medero

IPC分类号： A61B5/022 ,  A61B5/02

CPC分类号： A61B5/02225

摘要： An adaptive monitor and method for rapidly determining blood pressure, selects an initial cuff pressure to be applied to an artery of the test subject and then measures the amplitude of pressure pulses caused by the pumping of blood by the subject's heart. The cuff pressure is incrementally increased while the pulse amplitudes are monitored in order to obtain blood pressure readings by the oscillometric method. If the pulse amplitudes decrease for increases in pressure above the initial value, it is taken as an indication that mean arterial pressure is below the initial cuff pressure. Thus the cuff pressure is substantially decreased to a new initial value and the process is restarted. If it should be found upon a determination of the mean arterial pressure and the systolic pressure, that the initial or new cuff pressure was not low enough to determined diastolic pressure, the cuff pressure is automatically decreased in one large step to a level below the initial pressure and is then decreased in steps until diastolic pressure is located.

摘要翻译： 一种用于快速确定血压的适应性监测器和方法，选择要施加到受试者的动脉的初始袖带压力，然后测量由受试者的心脏泵送血液引起的压力脉冲的幅度。 袖带压力逐渐增加，同时监测脉搏幅度，以通过示波法获得血压读数。 如果压力升高超过初始值的脉冲幅度减小，则将其作为平均动脉压低于初始袖带压力的指示。 因此，袖带压力基本上降低到新的初始值，并且重新开始该过程。 如果在确定平均动脉压和收缩压时发现，初始或新的袖带压力不足以确定舒张压，袖带压力将在一个大步骤中自动降低到低于初始值 压力，然后逐步降低，直到定位舒张压。

公开(公告)号：US5706256A

公开(公告)日：1998-01-06

申请号：US577140

申请日：1995-12-22

申请人： Rush W. Hood, Jr. ,  Michael B. Duich

发明人： Rush W. Hood, Jr. ,  Michael B. Duich

IPC分类号： G01D3/00 ,  A61B5/00 ,  G06F1/04 ,  G06F1/06 ,  G06F1/08 ,  G04B47/00 ,  G01R23/00 ,  H03L7/00

CPC分类号： G06F1/08 ,  H04B2215/064 ,  H04B2215/065

摘要： A method for selecting fundamental clock frequencies in order to achieve electromagnetic compatibility in electronic products which employ a plurality of clocks. The method require first selecting an ideal frequency for each clock in the product. Then, and until the goal of avoiding coinciding harmonics is complete, the method includes the steps of computing all harmonics of all clock frequencies chosen, determining a minimum difference tolerable in the chosen frequencies and their harmonics for sufficient minimization of electromagnetic interference, and determining if the harmonics of the chosen frequencies coincide impermissibly within the frequency range. If there exists coincidence of harmonics within the predetermined minimum range, then the fundamental frequency of at least one of the clocks corresponding to an interfering harmonic must be adjusted to eliminate the interference. With the altered fundamental frequency, the steps of computing harmonics, determining if coincidence occurs, and adjusting the fundamental frequency is repeated.

摘要翻译： 一种用于选择基本时钟频率以便在采用多个时钟的电子产品中实现电磁兼容性的方法。 该方法需要首先为产品中的每个时钟选择理想频率。 然后，直到完成避免重合谐波的目的，该方法包括以下步骤：计算所选择的所有时钟频率的所有谐波，确定所选频率中容许的最小差值及其谐波以充分最小化电磁干扰，以及确定是否 所选频率的谐波在频率范围内不可忽略地重合。 如果在预定的最小范围内存在谐波一致，则必须调整与干扰谐波相对应的至少一个时钟的基频以消除干扰。 随着基频的改变，重复计算谐波，确定是否发生重合，调整基频的步骤。

公开(公告)号：US4638810A

公开(公告)日：1987-01-27

申请号：US751825

申请日：1985-07-05

申请人： Maynard Ramsey, III ,  Richard Medero ,  Rush W. Hood, Jr.

发明人： Maynard Ramsey, III ,  Richard Medero ,  Rush W. Hood, Jr.

IPC分类号： A61B5/022 ,  G06F17/00 ,  A61B5/02

CPC分类号： A61B5/022 ,  A61B5/02116

摘要： A blood pressure cuff is applied about a subject's artery, and inflated above the systolic level thus fully occluding the artery for a full heart cycle. The cuff pressure is thereafter reduced to permit an increasing flow through the progressively less occluded artery, and a measure of the peak amplitudes of the successively encountered blood flow (oscillatory complex) pulses stored in memory. Also retained is the cuff pressure obtaining for each stored complex peak. In accordance with varying aspects of the present invention, the stored complex peak-representing data ensemble is corrected for aberrations; and improved data processing operates on the stored (and advantageously corrected) pulse peak data and the corresponding cuff pressure information to determine the subject's diastolic arterial blood pressure.

摘要翻译： 血压袖带围绕受试者的动脉施用，并且在收缩期以上充气，从而完全闭塞动脉以进行全心脏周期。 然后减小袖带压力以允许逐渐减少的阻塞动脉的流量增加，以及存储在存储器中的连续遇到的血流（振荡复合物）脉冲的峰值振幅的量度。 还保留了每个存储的复杂峰值的袖带压力。 根据本发明的不同方面，对所存储的复数峰值数据集合进行像差校正; 并且改进的数据处理对存储的（和有利的校正的）脉冲峰值数据和相应的袖带压力信息进行操作，以确定受试者的舒张动脉血压。

公开(公告)号：US07018337B2

公开(公告)日：2006-03-28

申请号：US10065698

申请日：2002-11-11

申请人： Rush W. Hood, Jr.

发明人： Rush W. Hood, Jr.

IPC分类号： A61B5/02

CPC分类号： A61B5/02225 ,  A61B5/0235

摘要： An automatic non-invasive blood pressure monitoring system includes a blood pressure monitor, a blood pressure cuff pneumatically connected to the blood pressure monitor, a deflation valve connected intermediate the blood pressure monitor and the blood pressure cuff, and a controller for automatically controlling the non-invasive blood pressure monitoring.

摘要翻译： 一种自动无创血压监测系统，包括血压监测器，气压连接到血压监测器的血压袖带，连接在血压监测器和血压袖带之间的放气阀，以及用于自动控制非血压的控制器， 无创血压监测。

公开(公告)号：US5680870A

公开(公告)日：1997-10-28

申请号：US368418

申请日：1995-01-04

申请人： Rush W. Hood, Jr. ,  Charles A. Wells ,  Richard Medero

发明人： Rush W. Hood, Jr. ,  Charles A. Wells ,  Richard Medero

IPC分类号： A61B5/022 ,  A61B5/02

CPC分类号： A61B5/02225 ,  A61B5/02116 ,  A61B5/022

摘要： An automated sphygmo-manometer which digitizes the pressure transducer output with sufficient resolution to preserve the details of the measured oscillation complexes. The "composite" arterial pulse signal containing the DC pressure component and the oscillation complexes is processed in a single processing channel so that the amplitudes of the oscillation pulse can be measured in the presence of the static components. Any necessary filtering is performed in the digital domain using known digital signal processing (DSP) techniques. In addition, dither signals may be added to the arterial pulse signal in the single processing channel in order to increase the apparent resolution. A simple finite impulse response (FIR) filter is used to sum respective samples to form high resolution samples from a plurality of low resolution samples. The FIR filter has zero crossings at the summing frequencies for the dither signal so as to eliminate the dither signal from the high resolution sum signal prior to determining the blood pressure from the composite signal using pulse separation and blood pressure calculation software.

摘要翻译： 一种自动血压计，可以将压力传感器输出数字化，并具有足够的分辨率，以保留测量的振荡复合体的细节。 包含DC压力分量和振荡复合物的“复合”脉冲信号在单个处理通道中被处理，使得可以在存在静态分量的情况下测量振荡脉冲的振幅。 使用已知的数字信号处理（DSP）技术在数字域中执行任何必要的滤波。 此外，抖动信号可以被添加到单个处理通道中的动脉脉冲信号，以便增加视在分辨率。 使用简单的有限脉冲响应（FIR）滤波器来对各个样本求和以从多个低分辨率采样中形成高分辨率采样。 FIR滤波器在用于抖动信号的求和频率处具有零交叉，以便在使用脉冲分离和血压计算软件从复合信号确定血压之前，从高分辨率和信号中消除抖动信号。