公开(公告)号：US06450968B1

公开(公告)日：2002-09-17

申请号：US09654480

申请日：2000-09-01

申请人： Lars Wallen ,  Rolf Castor

发明人： Lars Wallen ,  Rolf Castor

IPC分类号： A61B500

CPC分类号： A61B5/087 ,  G01N29/024 ,  G01N29/38 ,  G01N2291/0215 ,  G01N2291/02466 ,  G01N2291/02809 ,  G01N2291/02881

摘要： In a method for determining the gas content, e.g. of oxygen in breathing gas in a breathing apparatus, and a breathing apparatus operating according to the method, the gas content is determined from the speed of sound in the breathing gas. In order to resolve the problems caused by temperature variations in gas samples, determination of the speed of sound is synchronized with one or more specific times in a respiratory cycle. Determination can then be made when conditions are most stable.

摘要翻译： 在用于确定气体含量的方法中，例如， 在呼吸器中呼吸气体中的氧气和根据该方法操作的呼吸器，气体含量由呼吸气体中的声速确定。 为了解决气体样品温度变化引起的问题，声音速度的确定与呼吸周期中的一个或多个特定时间同步。 然后可以在条件最稳定时进行测定。

公开(公告)号：US08752548B2

公开(公告)日：2014-06-17

申请号：US12666799

申请日：2007-06-28

申请人： Åke Larsson ,  Lars Wallen ,  Carl Erik Troili

发明人： Åke Larsson ,  Lars Wallen ,  Carl Erik Troili

IPC分类号： F16K11/00 ,  G05D11/02 ,  G05B1/00

CPC分类号： A61M16/12 ,  A61M2016/0036 ,  A61M2016/0039 ,  A61M2016/0042 ,  A61M2016/102 ,  A61M2202/025 ,  A61M2205/702 ,  G01F1/667 ,  G01F1/68 ,  G01F25/0007 ,  G01N25/18 ,  G01N29/024 ,  G01N29/032 ,  G01N29/30 ,  G01N2291/0215 ,  G01N2291/02836

摘要： A patient ventilation system has a flow regulating and gas mixing arrangement connected to an inspiratory channel of the system from which a gas mixture containing oxygen and at least a second gas is delivered to the system's proximal tubing. The proximal tubing further is connected to an expiratory channel and is connectable to a patient. The system further has at least two gas inlets connected to the flow regulating and mixing arrangement, and a gas identification unit in which the at least second gas supplied to the system via one of the gas inlets can be identified. By actively measuring a value that is dependent on the characteristics of the delivered gas, and by correcting the calibration of the flow regulating and gas mixing arrangement and/or the flow meter(s) based on this value, both safety and flow regulation in the system are enhanced.

摘要翻译： 患者通气系统具有连接到系统的吸气通道的流量调节和气体混合装置，含有氧气和至少第二气体的气体混合物从该系统的吸入通道输送到系统的近端管道。 近端管还连接到呼气通道并且可连接到患者。 该系统还具有连接到流量调节和混合装置的至少两个气体入口，以及气体识别单元，其中可以识别通过气体入口之一供应到系统的至少第二气体。 通过积极测量取决于输送气体的特性的值，并且基于该值校正流量调节和气体混合装置和/或流量计的校准，这两者中的安全和流量调节 系统得到增强。

公开(公告)号：US09289569B2

公开(公告)日：2016-03-22

申请号：US13510046

申请日：2010-11-16

申请人： Erik Cardelius ,  Magnus Hallbäck ,  Pär Emtell ,  Lars Wallen

发明人： Erik Cardelius ,  Magnus Hallbäck ,  Pär Emtell ,  Lars Wallen

IPC分类号： A61M15/00 ,  A61M16/10 ,  A61M16/12 ,  A61M16/18

CPC分类号： A61M16/104 ,  A61M16/024 ,  A61M16/12 ,  A61M16/18 ,  A61M2016/1025 ,  A61M2016/1035 ,  A61M2202/0208 ,  A61M2202/0283 ,  A61M2205/18 ,  A61M2205/3331 ,  A61M2205/3375

摘要： A breathing apparatus has a first delivery device for adding a volume of a substance to a gas flow, the delivery device having a gas inlet and a gas outlet. A unit monitors a presence of the substance in a gas downstream the delivery device using a first sensor unit at the gas outlet that provides a first measurement value based on an acoustic property of a gas in a first conduit. A second sensor unit at the gas inlet provides a second measurement value based on an acoustic property of a gas present in the second conduit. A control unit determines the presence of the substance based on the first measurement value or based on a comparison of the first measurement value and the second measurement value.

摘要翻译： 呼吸器具有用于将一定体积的物质添加到气流的第一输送装置，所述输送装置具有气体入口和气体出口。 单元使用在气体出口处的第一传感器单元监测物质在输送装置下游的气体中的存在，该第一传感器单元基于第一导管中的气体的声学特性提供第一测量值。 气体入口处的第二传感器单元基于存在于第二导管中的气体的声学特性提供第二测量值。 控制单元基于第一测量值或者基于第一测量值和第二测量值的比较来确定物质的存在。

公开(公告)号：US6058786A

公开(公告)日：2000-05-09

申请号：US274862

申请日：1999-03-23

申请人： Lars Wallen ,  Carl-Erik Arvidsson

发明人： Lars Wallen ,  Carl-Erik Arvidsson

IPC分类号： A61B5/087 ,  G01F1/66

CPC分类号： A61B5/087 ,  G01F1/662

摘要： A device for measuring a gas flow, has a measurement chamber and an ultrasonic transceiver unit which can be attached to the measurement (chamber over openings of the measurement chamber and which is provided with transmit and receive heads. The heads are directed against the openings of the measurement chamber, membranes being arranged between the measurement chamber and the transmit and receive heads which are permeable to ultrasound waves but largely impermeable to moisture and bacteria. In order to feed maximum acoustical energy to the ultrasonic transceiver unit while keeping moisture and bacteria away from the unit, the membranes are replaceably arranged close to the transmit and receive heads.

摘要翻译： 一种用于测量气体流量的装置，具有测量室和超声波收发器单元，该单元可附接到测量室（在测量室的开口上方的腔室中，并且设置有发射和接收头），头部被引导到 测量室，膜布置在测量室和透射和接收头之间，该透镜和接收头可超声波渗透，但对湿度和细菌无法渗透，为了将超声波收发器单元的最大声能输送到同时保持水分和细菌远离 该单元，膜可更换地布置成靠近发射和接收头。

公开(公告)号：US20120312302A1

公开(公告)日：2012-12-13

申请号：US13510046

申请日：2010-11-16

申请人： Erik Cardelius ,  Magnus Hallbäck ,  Pär Emtell ,  Lars Wallen

发明人： Erik Cardelius ,  Magnus Hallbäck ,  Pär Emtell ,  Lars Wallen

IPC分类号： A61M16/12 ,  A61M16/01

CPC分类号： A61M16/104 ,  A61M16/024 ,  A61M16/12 ,  A61M16/18 ,  A61M2016/1025 ,  A61M2016/1035 ,  A61M2202/0208 ,  A61M2202/0283 ,  A61M2205/18 ,  A61M2205/3331 ,  A61M2205/3375

摘要： A breathing apparatus has a first delivery device for adding a volume of a substance to a gas flow, the delivery device having a gas inlet and a gas outlet. A unit monitors a presence of the substance in a gas downstream the delivery device using a first sensor unit at the gas outlet that provides a first measurement value based on an acoustic property of a gas in a first conduit. A second sensor unit at the gas inlet provides a second measurement value based on an acoustic property of a gas present in the second conduit. A control unit determines the presence of the substance based on the first measurement value or based on a comparison of the first measurement value and the second measurement value.

摘要翻译： 呼吸器具有用于将一定体积的物质添加到气流的第一输送装置，所述输送装置具有气体入口和气体出口。 单元使用在气体出口处的第一传感器单元监测物质在输送装置下游的气体中的存在，该第一传感器单元基于第一导管中的气体的声学特性提供第一测量值。 气体入口处的第二传感器单元基于存在于第二导管中的气体的声学特性提供第二测量值。 控制单元基于第一测量值或者基于第一测量值和第二测量值的比较来确定物质的存在。

公开(公告)号：US06634240B1

公开(公告)日：2003-10-21

申请号：US09377133

申请日：1999-08-19

申请人： Lars Wallen

发明人： Lars Wallen

IPC分类号： G01F166

CPC分类号： H03K5/1536

摘要： A zero crossing detector has an analyzer which determines a zero level crossing of a currently input electrical pulse packet and which emits a trigger signal indicative of a determination having been made, and a pre-trigger unit which monitors variations in the amplitude of the current input pulse packet to detect a crossing of a pre-trigger level. The detector further includes a control unit operably connected to the pre-trigger unit which compares the amplitude of the pre-trigger level with any amplitude of a signal derived from the current or a previous input electrical pulse packet, and which automatically controls the amplitude of the pre-trigger level to maintain a working difference therebetween.

摘要翻译： 零交叉检测器具有分析器，该分析器确定当前输入的电脉冲分组的零电平交叉并发出指示已经做出的确定的触发信号;以及预触发单元，其监视当前输入的幅度变化 脉冲数据包来检测预触发电平的交叉。 检测器还包括可操作地连接到预触发单元的控制单元，其将预触发电平的幅度与从当前或先前的输入电脉冲分组导出的信号的任何幅度进行比较，并且其自动控制 预触发级别以保持其间的工作差异。

公开(公告)号：US20150374947A1

公开(公告)日：2015-12-31

申请号：US14844544

申请日：2015-09-03

申请人： Lars Wallen

发明人： Lars Wallen

IPC分类号： A61M16/10 ,  A61M16/08 ,  A61M16/00

CPC分类号： A61M16/104 ,  A61M16/0051 ,  A61M16/009 ,  A61M16/01 ,  A61M16/024 ,  A61M16/0891 ,  A61M16/18 ,  A61M16/22 ,  A61M2016/0027 ,  A61M2016/003 ,  A61M2016/102 ,  A61M2202/0208 ,  A61M2202/0241 ,  A61M2205/15 ,  A61M2205/18 ,  A61M2205/3334 ,  A61M2205/50 ,  A61M2205/502 ,  A61M2202/0007

摘要： An anesthetic breathing apparatus and system, having a patient circle system for re-breathing exhaled gases by a patient a volume reflector, a fresh gas delivery line, and a gas sensor unit arranged to measure a gas stream upstream a fresh gas connection and downstream said reflector unit. The gas sensor unit provides a signal for detection of a reflector driving gas (RDG) crossing over the volume reflector during inspiration based on at least one property of the gas stream measured by the gas sensor unit. Appropriate action may be taken based on this measurement, for instance in disclosed methods.

摘要翻译： 一种麻醉呼吸装置和系统，具有患者圈系统，用于由患者重新呼吸呼出的气体体积反射器，新鲜气体输送管线和气体传感器单元，其布置成测量新鲜气体连接上游的气流，并且在下游所述 反射器单元。 基于由气体传感器单元测量的气流的至少一个性质，气体传感器单元提供用于检测在吸气期间穿过体积反射器的反射器驱动气体（RDG）的信号。 可以基于该测量采取适当的动作，例如在公开的方法中。

公开(公告)号：US6098467A

公开(公告)日：2000-08-08

申请号：US210832

申请日：1998-12-15

申请人： Lars Wallen

发明人： Lars Wallen

IPC分类号： A61B8/00 ,  G01F1/66

CPC分类号： G01F1/662 ,  G01F1/667

摘要： An acoustic fluid flow meter has a timer for determining downstream and upstream transit times values of acoustic pulses transmitted between acoustic signal transceivers, operable alternately as transmitters and receivers, respectively, with and against the direction of fluid flow. Additionally an error signal indicator is supplied with the determined transit time values and emits an error signal indicative of a false flow reading if their sum and/or difference, particularly the sum of derived values, differs from a corresponding control value by a predetermined amount.

摘要翻译： 声流体流量计具有用于确定在声信号收发器之间传输的声脉冲的下行和上行传送时间值的定时器，其分别可操作地作为发射器和接收器，与流体流动的方向交替运动。 此外，错误信号指示符被提供有确定的通过时间值，并且如果其和和/或差异，特别是导出值的和不同于相应的控制值预定量，则发出指示错误流读取的错误信号。

公开(公告)号：US6035851A

公开(公告)日：2000-03-14

申请号：US941307

申请日：1997-09-30

申请人： Lars Wallen

发明人： Lars Wallen

IPC分类号： G01N15/08 ,  A61M16/00 ,  A61M16/10 ,  A61M16/12 ,  B01D39/14 ,  B01D46/44

CPC分类号： B01D46/0086 ,  A61M16/00 ,  A61M16/1065 ,  A61M16/107 ,  B01D46/0091 ,  A61M16/0051 ,  A61M16/12 ,  A61M2016/0039 ,  A61M2016/0042 ,  A61M2205/707

摘要： A method and device for monitoring the condition of at least one filter arranged in a flow path of a ventilator. Flow measurement signals are obtained from a first flow meter and a second flow meter and pressure signals are obtained from a first pressure meter and a second pressure meter. When a filter in the inspiratory section of the ventilator is to be tested, flow through the filter and the drop in pressure across the filter are determined from the pressure measured by the first pressure meter and the second pressure meter. If the drop in pressure in relation to the flow lies within predefined limits, the filter is deemed to be serviceable. In a corresponding manner, another filter in the expiratory line can be tested, wherein flow through the filter is determined by the second flow meter.

摘要翻译： 一种用于监测布置在通气机的流路中的至少一个过滤器的状态的方法和装置。 从第一流量计和第二流量计获得流量测量信号，并且从第一压力计和第二压力计获得压力信号。 当要对通气机吸气段中的过滤器进行测试时，通过过滤器的流量和过滤器上的压力下降是由第一压力计和第二压力计测量的压力来确定的。 如果与流量相关的压力下降在预定义的限度内，则认为过滤器可以使用。 以相应的方式，可以测试呼气管线中的另一个过滤器，其中流过过滤器的流量由第二流量计确定。

公开(公告)号：US5279293A

公开(公告)日：1994-01-18

申请号：US861150

申请日：1992-03-31

申请人： Hans Andersen ,  Martin Obel ,  Lars Wallen

发明人： Hans Andersen ,  Martin Obel ,  Lars Wallen

IPC分类号： A61N1/39 ,  A61N1/00

CPC分类号： A61N1/3943

摘要： An implantable defibrillator has a capacitor which, through a controllable switch arrangement, can either be connected to a voltage source for charging the capacitor, or connected across electrodes placed at the heart for delivering a defibrillation pulse. To calculate the minimum pulse energy required for successful defibrillation, ventricular fibrillation is first induced, so that a plurality of defibrillation attempts, with energy increasing from attempt-to-attempt can be undertaken until successful defibrillation occurs. For inducing ventricular fibrillation, the capacitor of the implantable defibrillator is connected to the voltage source until a prescribed charging voltage, which is significantly below the voltage necessary for defibrillation, is reached, and subsequently, the capacitor is disconnected from the voltage source during brief time spans at intervals within the framework of a sequence and is connected during those time spans to the electrodes. Between the time spans, the capacitor is again charged.

摘要翻译： 2.1。 已知的可植入除颤器包含电容器，该电容器可以通过可控开关装置连接到电压源，以便再充电，或者连接到置于心脏上的电极，以便发出除颤脉冲。 为了确定除颤的最小所需脉冲能量，首先诱发心室颤动，由此进行多次除颤尝试，每次进行能量增加，直到发生成功的除颤。 2.2。 为了能够通过可植入除颤器以简单的方式诱发心室颤动，电容器（1）连接到电压源（4），直到达到规定的充电电压; 此后，电容器（1）在频率框架内以间隔彼此相对的短时间段内与电压源（4）断开，并连接到电极（10和11）。