Ultrasound mass flow meter
    1.
    发明公开
    Ultrasound mass flow meter 审中-公开
    Ultraschalldurchflussmesser

    公开(公告)号:EP1336821A3

    公开(公告)日:2003-12-03

    申请号:EP02029043.3

    申请日:2002-12-27

    申请人: Siemens-Elema AB

    IPC分类号: G01F1/66 G01N29/10

    摘要: An ultrasound meter (2) comprising a transmitter (10), a receiver (14) and a control unit (12)for the transmitter (10) is disclosed. In order to improve measurements a feed-back connection (18) is disposed between the control unit (12) and the receiver (14) for a signal from the receiver (14) to the control unit (12) and the control unit (12) is adapted to regulate energy to the transmitter (10) in dependence of the signal fed back from the receiver (14) so that a constant output signal is obtained from the receiver (14).

    High frequency oscillation ventilator
    2.
    发明公开
    High frequency oscillation ventilator 有权
    装置用于高频机械通气

    公开(公告)号:EP1132105A3

    公开(公告)日:2003-11-26

    申请号:EP00128650.9

    申请日:2000-12-28

    申请人: Siemens-Elema AB

    发明人: Bennarsten, Johan

    IPC分类号: A61M16/00

    摘要: A high frequency oscillator (HFO) ventilator comprises an oscillator unit (2) for alternately supplying to and removing from a proximal end of a gas conduit (6,10,14,16) a volume of gas ("oscillator volume") at a predetermined high frequency; a gas conduit (6,10,14,16) having a proximal end (4) connectable to the oscillator unit (2) and a distal end (18) connectable with the patient's airways; and located between the proximal end (4) and the distal end (18), an inlet (24) for receiving a continuous flow of a bias gas from a supply (26) and an outlet (20) characterised in that the ventilator further comprises a flow controller (38,40) adapted to apportion between the distal end (18) of the conduit (6,10,14,16) and the outlet (20) the volume of gas supplied by the oscillator unit (2) to establish a predetermined inspiration tidal volume for delivery to the patient's airways independent of the oscillator volume.

    High frequency oscillator ventilator
    3.
    发明公开
    High frequency oscillator ventilator 有权
    高频振荡器呼吸机

    公开(公告)号:EP1120125A3

    公开(公告)日:2003-11-19

    申请号:EP00126728.5

    申请日:2000-12-05

    申请人: Siemens-Elema AB

    发明人: Bennarsten, Johan

    IPC分类号: A61M16/00

    摘要: A high frequency oscillator (HFO) ventilator (2) comprises a gas conduit (26,6) having an opening (30) for gas connection with a patient's airways and a bias gas flow inlet (34) and outlet (10) disposed to define therebetween a bias gas flow-path within the conduit (26,6). An oscillator (16) is operable to induce pressure oscillations in gas within the conduit (26,6) to move a volume of gas ("tidal volume") along a respiration flow-path, intersecting the bias gas flow-path, alternately in to and out of the opening (30) at a predetermined high frequency to provide respectively an inspiration phase and an expiration phase of a breathing cycle. The HFO ventilator (2) further comprises an extraction device (38,44) operable during the breathing cycle, and preferably in timed relation with the operation of the oscillator (16), to withdraw an additional amount of gas from the respiration flow-path.

    摘要翻译: 高频振荡器(HFO)呼吸机(2)包括具有用于与患者气道气体连接的开口(30)的气体导管(26,6),以及设置成限定偏压气体流入口(34)和出口 在导管(26,6)内的偏压气体流动路径之间。 振荡器(16)可操作以引起导管(26,6)内的气体中的压力振荡,以沿着呼吸流动路径移动一定体积的气体(“潮气量”),该气体交替地与偏置气体流动路径相交 以预定的高频率进出开口(30)以分别提供呼吸循环的吸气阶段和呼气阶段。 HFO呼吸机(2)还包括在呼吸循环期间并且优选地与振荡器(16)的操作时间关联地操作的提取装置(38,44),以从呼吸流动路径中提取额外量的气体 。

    A method for controlling an expiratory valve in a ventilator
    7.
    发明公开
    A method for controlling an expiratory valve in a ventilator 有权
    一种用于在呼吸机控制呼气阀方法

    公开(公告)号:EP1068875A3

    公开(公告)日:2003-07-09

    申请号:EP00111515.3

    申请日:2000-05-29

    申请人: Siemens-Elema AB

    发明人: Jalde, Fredrik

    摘要: A method for controlling an expiratory valve in a ventilator during expiration (E). An optimum system is using method steps comprising a method stage in which the expiratory valve is opened almost completely for a first interval (t1) and measurement during the first interval (t1) of flow or pressure in the expiratory part of the ventilator, determining when the flow or pressure in the expiratory part meets a condition, starting a second interval (t2) when the flow in the expiratory part meets the condition and regulating the expiratory valve during the second interval (t2) in order to attain a pre-set end pressure (PEEP) in the expiratory section.

    Method of and apparatus for deriving indices characterising atrial arrhythmias
    8.
    发明公开
    Method of and apparatus for deriving indices characterising atrial arrhythmias 有权
    对于指数的表征房性心律失常的恢复方法及装置

    公开(公告)号:EP1300110A2

    公开(公告)日:2003-04-09

    申请号:EP02021962.2

    申请日:2002-09-30

    申请人: Siemens-Elema AB

    IPC分类号: A61B5/0464

    摘要: A temporally isolated portion of a digital representation of a time-domain electrical signal originating from the atria of a patient is frequency analysed by analyser (14) to provide a corresponding frequency spectrum. A comparator (16) is arranged to compare the obtained frequency spectrum with a template frequency spectrum, selectively adapted (18) dependent on previously obtained frequency spectra from different temporally isolated portions, to determine a frequency shift value and an amplitude value optimising a correlation between the two spectra. An output representing the two determined values is used by an event classification means (22,24), preferably together with parameters describing the template frequency spectrum, to classify an atrial arrhythmia manifest in the digital representation.

    摘要翻译: 的时域电信号从患者的心房源自的数字表示的时间上分离的部分被频率分析器通过(14)进行分析,以提供相应的频谱。 比较器(16)被布置成将所得到的频谱与模板频谱比较,选择性angepasst(18)依赖于从不同的时间上分离的部分先前所获得的频谱,以确定性的矿井的频移值和振幅值优化之间的相关性 两个光谱。 代表两个确定性开采值的输出在事件分类装置(22,24)用于通过,优选连同描述所述模板频谱参数,对房性心律失常的数字表示清单进行分类。

    High frequency oscillation patient ventilator system
    10.
    发明公开
    High frequency oscillation patient ventilator system 有权
    高频振荡患者通气系统

    公开(公告)号:EP1106197A3

    公开(公告)日:2003-01-15

    申请号:EP00120983.2

    申请日:2000-09-26

    申请人: Siemens-Elema AB

    发明人: Bennarsten, Johan

    IPC分类号: A61M16/00

    摘要: A patient ventilator system (19) comprises a high frequency oscillation ventilator (1,4,5,6) connectable to a patient circuit (2,3) and operable to induce oscillations within gas in the circuit (2,3) at a predetermined high frequency and a gas supply (7) connectable to the patient circuit (2,3) for supplying breathing gas thereto; A detection device (14,15,16) is also included within the ventilator system (19) and is adapted to monitor during the operation of the high frequency oscillator ventilator (1,4,5,6) one or both gas pressure and gas flow to detect a variation therein not derived from the induced high frequency oscillations and to output a trigger signal (13) dependent on the detected variation indicating a spontaneous breathing effort; and in that gas supply (7) is operable on receipt of the trigger signal (13) to supply breathing gas into the circuit (2,3) at a level to assist the spontaneous breathing effort.