Method and apparatus for indirect blood pressure measurement
    33.
    发明公开
    Method and apparatus for indirect blood pressure measurement 失效
    用于间接血压测量的方法和装置

    公开(公告)号:EP0249990A3

    公开(公告)日:1988-03-16

    申请号:EP87108807

    申请日:1987-06-19

    Inventor: Nelson, Craig H.

    CPC classification number: A61B5/022 A61B5/02225 Y10S128/90

    Abstract: A method and apparatus for the indirect measurement of blood pressure is disclosed. Pressure is applied to a cuff attached to a patient adjacent a blood vessel and a quantity repressentative of the patient's blood pressure is measured as the applied pressure is changed. A table of values of the quantity as the applied pressure is changed is formed. Valves of the table are selected as spurious high and low values in response to predetermined criteria and new values assigned to the selected values which reduces the error in calculating systolic and diastolic blood pressures from the table.

    Connector means for transducer/monitor systems
    34.
    发明公开
    Connector means for transducer/monitor systems 失效
    传感器/监控系统的连接器

    公开(公告)号:EP0132380A3

    公开(公告)日:1987-09-09

    申请号:EP84304918

    申请日:1984-07-19

    Abstract: @ A connector (3) for connecting a transducer (1) to a monitor (2) in a system for monitoring physiological conditions in humans and other animals includes means (4) for transforming the impedance level of signals from the transducer to a level appropriate for the monitor and for drawing and adapting power from the monitor for effecting this impedance transformation. The connector (1) may also include one or more of the following means (5) a mechanism for adjusting the offset or sensitivity of the signal from the transducer; a mechanism for detecting the absence of the transducer; a mechanism for detecting an open circuit between the monitor and the transducer; a device for converting power drawn from the monitor to direct current where the power drawn from the monitor is, before conversion, either sine wave or pulsed; a mechanism for regulating the current from the monitor; and a mechanism for eliminating common-mode voltage errors from the transducer signal.

    Apparatus for automatically measuring blood pressure
    36.
    发明公开
    Apparatus for automatically measuring blood pressure 失效
    用于自动测量血压的装置

    公开(公告)号:EP0123313A3

    公开(公告)日:1987-01-07

    申请号:EP84104600

    申请日:1984-04-24

    CPC classification number: A61B5/022 A61B5/02255 A61B5/0468

    Abstract: An automatic blood pressure measuring apparatus including an occluding device having a cuff to apply a pressure to a body member of asubject, and a blood-pressure determining device to determine a blood pressure according to a variation in a pulse wave in relation to a change in the cuff pressure. The apparatus comprises a detector for monitoring a blood circulatory system of the subject, and generating signals representing an abnormality associated with the circulatory system. The apparatus further comprises a control device for actuating the occluding device to apply the cuff pressure to the body member, and causing the blood-pressure determining device to execute a predetermined series of blood-pressure measuring steps to measure the blood pressure, thereby permitting an automatic measurement of the blood pressure of the subject when the blood circulatory system is found abnormal by the detector.

    Heartbeat rate indicator
    37.
    发明公开
    Heartbeat rate indicator 失效
    心跳速率指示器

    公开(公告)号:EP0092962A3

    公开(公告)日:1986-10-01

    申请号:EP83302206

    申请日:1983-04-19

    Inventor: Tabata, Junichi

    CPC classification number: A61B5/0245

    Abstract: A heartbeat rate indicator comprises a detection electrode (1) for receiving an electrocardiac potential signal, an amplifier circuit (3) for amplifying the electrocardiac potential signal, a filter circuit (4) for removing noise from the amplified electrocardiac potential signal, an an amplitude detection circuit (5) for detecting pulses having an amplitude greater than a predetermined amplitude. An absolute value circuit (8) produces an absolute value signal from the output signal of the filter circuit, the absolute value signal being fed to the amplitude detection circuit.

    Abstract translation: 心跳速率指示器包括用于接收心电位信号的检测电极(1),用于放大心电位信号的放大器电路(3),用于从放大的心电位信号中去除噪声的滤波电路(4),振幅 检测电路(5),用于检测振幅大于预定幅度的脉冲。 绝对值电路(8)从滤波电路的输出信号产生绝对值信号,绝对值信号被馈送到振幅检测电路。

    Determination of blood flow by using tracer gases and computed tomography
    38.
    发明公开
    Determination of blood flow by using tracer gases and computed tomography 失效
    使用追踪器气体和计算机测量血液流量测定

    公开(公告)号:EP0182200A3

    公开(公告)日:1986-08-20

    申请号:EP85114093

    申请日:1985-11-05

    CPC classification number: A61B5/0275

    Abstract: A simplified method of determining tissue blood flow such as cerebral blood flow is provided by calculating the partial derivatives with respect to flow rate constant (k) and partition coefficient (λ) of the sum of errors squared for calculated tissue concentration of a diffusible inert gas such as xenon minus measured tissue concentration of xenon based on CT numbers.

    Abstract translation: 通过计算关于流量常数(k)的偏导数和用于计算的可扩散惰性气体的组织浓度的误差平方和的分配系数(λ),提供了确定组织血流如脑血流量的简化方法 例如氙减去基于CT数的氙的组织浓度。

    Sensor having cutaneous conformance
    39.
    发明公开
    Sensor having cutaneous conformance 失效
    具有切割性能的传感器

    公开(公告)号:EP0127947A3

    公开(公告)日:1986-07-30

    申请号:EP84302994

    申请日:1984-05-03

    Abstract: A sensor for trans-illumination of a blood perfused portion of flesh to measure light extinction during trans- illumination is disclosed. The sensor is preferably mounted on a fingertip but any digit or blood perfused portion of flesh will work. The sensor includes a first end for disposition on one side of the trans-illuminated flesh and a second end for disposition on the opposite and opposed side of the trans- illuminated flesh. A light source is mounted to the first side and a photo- sensor is mounted to the second side. If an elongated flexible strip is used, it is provided with adhesive and is suitably windowed that light is allowed to take an optical path through the finger. If no flexible strip is used, the two ends are aligned and secured to the flesh such that the light emitted takes an optical path through the finger. When the adhesive fastener is used, the effect of the light source and photo-detector substrates being integrated into the adhesive fastener is that they become, in effect, a part of the skin. The resulting device is resistant to accidental removal and avoids constriction of blood vessels. Most importantly, the low mass of the sensor itself and its conformance to, so as to effectively become a part of, the skin, prevents relative motion between the light source and sensor and the perfused flesh. This eliminates the common interference associated with the operation of conventional plethysmographs and oximeters.

    Device for measuring blood pressure
    40.
    发明公开
    Device for measuring blood pressure 失效
    用于测量血压的装置

    公开(公告)号:EP0154995A3

    公开(公告)日:1986-07-16

    申请号:EP85102899

    申请日:1985-03-13

    CPC classification number: A61B5/022

    Abstract: An electronic device for measuring blood pressure, according to which either systolic pressure may be derived from mean pressure and diastolic pressure, or diastolic pressure may be derived from systolic pressure and mean pressure, whereby the time duration of the application of pressure to the patient's arm may be reduced because the pressure to be applied may only range substantially over between mean pressure and diastolic pressure or between systolic pressure and mean pressure. Additionally proposed is a means for improving the accuracy of the above- mentioned derivation of systolic pressure or diastolic pressure. As a result, considerable reduction in the time duration required for measurement may be reduced without any increase in measurement errors.

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