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    Ventilator control system and method
    5.
    发明授权
    Ventilator control system and method 失效
    呼吸机控制系统及方法

    公开(公告)号：US6158432A

    公开(公告)日：2000-12-12

    申请号：US45461

    申请日：1998-03-20

    申请人： James W. Biondi ,  Douglas M. Johnston ,  Gerhardt P. Schroeder ,  Donald D. Gilmore ,  Robert Reynolds

    发明人： James W. Biondi ,  Douglas M. Johnston ,  Gerhardt P. Schroeder ,  Donald D. Gilmore ,  Robert Reynolds

    IPC分类号： A61M16/00

    CPC分类号： A61M16/0051 ,  A61M16/00 ,  A61M16/0009 ,  A61M16/0012 ,  A61M16/0081 ,  G06F19/3406 ,  A61M2016/0021 ,  A61M2016/0027 ,  A61M2016/0039 ,  A61M2016/0042 ,  A61M2205/505

    摘要： The invention features an exhalation assist device for adjusting the airway resistance in an exhalation circuit of a medical ventilator. The device includes a set of pressure, airflow and airway sensors, a controlling processor, a user interface, and a ventilatory unit in communication with a medical ventilator. Data relating to pressure within the ventilatory unit and data relating to exhalation airflow, exhalation circuit pressure and exhalation circuit resistance are provided to the controlling processor by the sensors. The controlling processor compares measured and calculated values for airway pressure, airflow, airway resistance and applied negative pressure with desired values that have been entered by a clinician. Based on these calculations, the controlling processor transmits a signal that will change the applied negative pressure applied to the exhalation circuit by the ventilatory unit. The amount of negative pressure applied during the breathing cycle is varied by the controlling processor so that the amount of exhalation assist increases proportionately with the amount of exhalation flow and so that the amount of pressure within the patient airway remains constant at a level greater than zero and less than PEEP.

    摘要翻译： 本发明的特征在于用于调节医用呼吸机呼气回路中的气道阻力的呼气辅助装置。 该装置包括一组压力，气流和气道传感器，控制处理器，用户界面和与医疗呼吸机通信的通气单元。 通过传感器向控制处理器提供与通气单元内的压力有关的数据以及与呼出气流，呼气回路压力和呼气回路电阻有关的数据。 控制处理器将气道压力，气流，气道阻力和施加的负压的测量值和计算值与临床医生输入的期望值进行比较。 基于这些计算，控制处理器发送将通过通气单元改变施加到呼气回路的施加负压的信号。 在呼吸循环期间施加的负压量由控制处理器改变，使得呼气量的辅助量与呼气量成比例地增加，并且使得患者气道内的压力量保持恒定在大于零的水平 小于PEEP。

    Cardiac synchronous ventilation
    8.
    发明授权
    Cardiac synchronous ventilation 失效
    心脏同步通气

    公开(公告)号：US5377671A

    公开(公告)日：1995-01-03

    申请号：US760409

    申请日：1991-09-16

    申请人： James W. Biondi ,  Douglas M. Johnston ,  Stephen J. Herman

    发明人： James W. Biondi ,  Douglas M. Johnston ,  Stephen J. Herman

    IPC分类号： A61M16/00 ,  A61H31/00

    CPC分类号： A61M16/0051 ,  A61M2016/0027 ,  A61M2016/0033 ,  A61M2230/04

    摘要： A method and apparatus for providing circulatory and respiratory assistance in a patient. The method includes the steps of determining the onset and duration of at least one portion of the cardiac cycle of the patient and increasing the intrathoracic pressure in the patient by introducing a volume of a respiratory gas into the lungs of the patient during the ventricular systolic portion of the cardiac cycle. The method includes reducing the intrathoracic pressure in the patient by extracting, under either subambient or substantially ambient respiratory gas pressure, a portion of the volume of the respiratory gas from the lungs of the patient, beginning during the diastolic portion of the same cardiac cycle. An apparatus for providing circulatory and respiratory assistance in a patient includes a processing device for determining the onset and duration of at least one portion of the cardiac cycle and a ventilation controller for increasing the intrathoracic pressure in the patient by introducing a volume of a respiratory gas into the lungs of the patient during the ventricular systolic portion of the patient's cardiac cycle and for reducing the intrathoracic pressure in the patient by extracting, under subambient or substantially ambient pressure, a portion of the volume of the respiratory gas from the lungs of the patient beginning during the diastolic portion of the same cardiac cycle.

    摘要翻译： 一种用于在患者体内提供循环和呼吸辅助的方法和装置。 该方法包括以下步骤：确定患者心脏周期的至少一部分的起始和持续时间，并且通过在心室收缩期内将一定体积的呼吸气体引入患者的肺部来增加患者的胸内压力 的心脏周期。 该方法包括通过在同一心脏周期的舒张期开始的患者的肺部的呼吸气体的一部分体积，在低于或大体上周围的呼吸气体压力的情况下，提取患者的胸内压力。 用于在患者中提供循环和呼吸辅助的装置包括用于确定心脏周期的至少一部分的起始和持续时间的处理装置和用于通过引入一定量的呼吸气体来增加患者的胸内压力的通气控制器 在患者的心脏周期的心室收缩期部分进入患者的肺部，并且通过在患者的环境或基本环境压力下从患者的肺部抽取一部分呼吸气体的量来减少患者的胸内压力 在相同心动周期的舒张期开始。