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27 条记录 (耗时 0.033 秒)

    Ambient pressure air/oxygen blender
    11.
    发明授权
    Ambient pressure air/oxygen blender 失效
    环境压力空气/氧气搅拌器

    公开(公告)号：US5014694A

    公开(公告)日：1991-05-14

    申请号：US597054

    申请日：1990-10-15

    申请人： Douglas F. DeVries

    发明人： Douglas F. DeVries

    IPC分类号： A61M16/12

    CPC分类号： A61M16/12

    摘要： A gas blender for use with home ventilation equipment where pressurized oxygen is mixed with ambient air, in which a double ended poppet cooperates with two valve seats which are configured and orientated so that axial motion of the double ended poppet simultaneously opens both valves to maintain a constant flow ratio, or simultaneously closes both valves to maintain a constant flow ratio. One of the valve seats may be adjustably positioned to determine the initial flow ratio of gases through the valve seats.

    摘要翻译： 一种与家用通风设备一起使用的气体搅拌机，其中加压氧与环境空气混合，其中双端口提升阀与两个阀座配合并配置，使得两端阀座同时打开两个阀门以维持 恒定流量比，或同时关闭两个阀门以保持恒定的流量比。 阀座中的一个可以可调节地定位以确定通过阀座的气体的初始流量比。

    Mechanical ventilation system utilizing bias valve
    12.
    发明授权
    Mechanical ventilation system utilizing bias valve 有权
    利用偏压阀的机械通风系统

    公开(公告)号：US09126002B2

    公开(公告)日：2015-09-08

    申请号：US12975308

    申请日：2010-12-21

    申请人： Douglas F. DeVries ,  Todd Allum

    发明人： Douglas F. DeVries ,  Todd Allum

    IPC分类号： A61M16/20 ,  A61M16/00 ,  F04C18/12 ,  F04C28/24 ,  F04C29/00 ,  A61M16/08

    CPC分类号： A61M16/205 ,  A61M16/0003 ,  A61M16/0057 ,  A61M16/0066 ,  A61M16/0069 ,  A61M16/0833 ,  A61M16/107 ,  A61M16/208 ,  A61M2016/0021 ,  A61M2016/003 ,  A61M2016/0039 ,  A61M2205/3334 ,  A61M2205/42 ,  F04C18/126 ,  F04C28/24 ,  F04C29/0035 ,  F04C2220/24

    摘要： A portable mechanical ventilator having a Roots blower is configured to provide a desired gas flow and pressure to a patient circuit. The mechanical ventilator includes a flow meter operative to measure gas flow produced by the Roots blower and an exhalation control module configured to operate an exhalation valve connected to the patient circuit. A bias valve connected between the Roots blower and the patient circuit is specifically configured to generate a bias pressure relative to the patient circuit pressure at the exhalation control module. The bias valve is further configured to attenuate pulsating gas flow produced by the Roots blower such that gas flowing to the mass flow meter exhibits a substantially constant pressure characteristic. The bias pressure facilitates closing of the exhalation valve at the start of inspiration, regulates positive end expiratory pressure during exhalation, and purges sense lines via a pressure transducer module.

    摘要翻译： 具有罗茨鼓风机的便携式机械呼吸机被配置为向患者回路提供所需的气流和压力。 机械呼吸机包括一个可测量由罗茨鼓风机产生的气流的流量计和一个配置成操作连接到患者回路的呼气阀的呼出控制模块。 连接在罗茨鼓风机和患者回路之间的偏压阀被特别地构造成产生相对于呼气控制模块处的患者回路压力的偏压。 偏压阀进一步构造成衰减由罗茨鼓风机产生的脉动气流，使得流到质量流量计的气体表现出基本恒定的压力特性。 偏压有助于在呼吸开始时关闭呼气阀，调节呼气期间的呼气末正压，并通过压力传感器模块清除感测线。

    Ventilator manifold
    14.
    发明授权
    Ventilator manifold 失效
    呼吸机歧管

    公开(公告)号：US4794922A

    公开(公告)日：1989-01-03

    申请号：US927250

    申请日：1986-11-04

    申请人： Douglas F. DeVries

    发明人： Douglas F. DeVries

    IPC分类号： A61M16/00 ,  A61M16/20 ,  A62B7/00

    CPC分类号： A61M16/00 ,  A61M16/204 ,  A61M16/205 ,  A61M2205/12

    摘要： A ventilator for providing artificial respiration to a patient has a plurality of pneumatic components mounted on a manifold. The manifold is a one piece aluminum casting having a base with ducts formed therein to permit fluid communication between the pneumatic components. The ducts are exposed on the underside of the base and are removably sealed from the atmosphere by a gasket and sealing plate which are secured to the underside of the base so as to cover the exposed portion of the ducts. Several components are formed in the manifold as part of the casting, including an accumulator and pulsation dampener, both of which are gas storage chambers. A plurality of fins are also formed as part of the manifold, and act as a heat sink for a printed circuit board which is secured to the manifold. Removable pneumatic components are secured to mounting blocks which extend upwardly from the base and have threaded bores therein for the receipt of threaded fasteners. Fluid communication between the ducts and the pneumatic components is established through stubs which extend upwardly from the base and which are sealingly engaged by the pneumatic components. A bore through the stubs forms an access port to the ducts. The access ports as aligned with inlets and outlets on the pneumatic components when the pneumatic components are secured to the mounting blocks.

    摘要翻译： 用于向患者提供人工呼吸的呼吸机具有安装在歧管上的多个气动部件。 歧管是单件铝铸件，其具有形成在其中的管道的基部，以允许气动部件之间的流体连通。 管道暴露在基座的下侧，并通过固定到基座的下侧的垫圈和密封板可移除地与大气密封，以便覆盖管道的暴露部分。 在歧管中形成多个部件，作为铸件的一部分，包括蓄能器和脉动阻尼器，两者都是储气室。 多个翅片还形成为歧管的一部分，并且用作固定到歧管的印刷电路板的散热器。 可移动气动部件被固定到从基座向上延伸并且在其中具有螺纹孔以用于接收螺纹紧固件的安装块。 管道和气动部件之间的流体连通通过从基座向上延伸并且被气动部件密封地接合的短柱来建立。 通过短截线的孔形成到管道的进入口。 当气动部件固定到安装块上时，进气口与气动部件上的进口和出口对齐。

    Electronically-controlled gas blending system
    15.
    发明授权
    Electronically-controlled gas blending system 失效
    电子控制气体混合系统

    公开(公告)号：US4602653A

    公开(公告)日：1986-07-29

    申请号：US667141

    申请日：1984-11-01

    申请人： Alberto Ruiz-Vela ,  Maurice J. Brooks ,  Douglas F. DeVries

    发明人： Alberto Ruiz-Vela ,  Maurice J. Brooks ,  Douglas F. DeVries

    IPC分类号： G05D11/13 ,  A61M16/10 ,  A61M16/12 ,  A61M16/20 ,  G05D11/02

    CPC分类号： A61M16/12 ,  A61M16/204 ,  A61M2016/1025 ,  Y10T137/2499

    摘要： A gas blending system includes a proportional mixing valve having a valve element movable between first and second limits of travel corresponding to a minimum and maximum percentage, respectively, of one of the gases in the blended mixture. The position of the valve element is detected by a detection mechanism, producing a position signal inputted to a microcomputer. The microcomputer also receives a control signal representing a desired percentage of one of the gases to be blended. The microcomputer calculates a desired valving element position as a function of the value of the control signal, and generates a drive signal as a function of a comparison made by the microcomputer between the detected valve element position and the desired position. A motor drives the valve element to the desired position in response to the drive signal. The system also includes an accumulator for accumulating a selected volume of gas mixture flowing from the outlet of the valve prior to delivery of the mixture to a downstream demand. The accumulator increases the effective peak flow rate capacity of the system, while "smoothing out" instantaneous changes in downstream flow rate demand before the effects of such changes are experienced at the valve.

    摘要翻译： 气体混合系统包括比例混合阀，其具有在第一和第二行程限制之间移动的阀元件，其分别对应于混合混合物中的一种气体的最小和最大百分比。 阀元件的位置由检测机构检测，产生输入到微型计算机的位置信号。 微型计算机还接收表示要混合的一种气体的所需百分比的控制信号。 微型计算机根据控制信号的值计算出期望的阀元件位置，并根据微型计算机在检测到的阀元件位置与期望位置之间的比较来生成驱动信号。 电机响应于驱动信号将阀元件驱动到所需位置。 该系统还包括用于在将混合物输送到下游需求之前累积从阀的出口流动的选定体积的气体混合物的蓄能器。 蓄能器增加系统的有效峰值流量容量，同时在阀门出现这种变化的影响之前，“平滑”下游流量需求的瞬时变化。

    MECHANICAL VENTILATION SYSTEM UTILIZING BIAS VALVE
    16.
    发明申请
    MECHANICAL VENTILATION SYSTEM UTILIZING BIAS VALVE 有权
    机械通风系统利用偏心阀

    公开(公告)号：US20110088697A1

    公开(公告)日：2011-04-21

    申请号：US12975308

    申请日：2010-12-21

    申请人： Douglas F. DeVries ,  Todd Allum

    发明人： Douglas F. DeVries ,  Todd Allum

    IPC分类号： A61M16/20

    CPC分类号： A61M16/205 ,  A61M16/0003 ,  A61M16/0057 ,  A61M16/0066 ,  A61M16/0069 ,  A61M16/0833 ,  A61M16/107 ,  A61M16/208 ,  A61M2016/0021 ,  A61M2016/003 ,  A61M2016/0039 ,  A61M2205/3334 ,  A61M2205/42 ,  F04C18/126 ,  F04C28/24 ,  F04C29/0035 ,  F04C2220/24

    摘要： A portable mechanical ventilator having a Roots blower is configured to provide a desired gas flow and pressure to a patient circuit. The mechanical ventilator includes a flow meter operative to measure gas flow produced by the Roots blower and an exhalation control module configured to operate an exhalation valve connected to the patient circuit. A bias valve connected between the Roots blower and the patient circuit is specifically configured to generate a bias pressure relative to the patient circuit pressure at the exhalation control module. The bias valve is further configured to attenuate pulsating gas flow produced by the Roots blower such that gas flowing to the mass flow meter exhibits a substantially constant pressure characteristic. The bias pressure facilitates closing of the exhalation valve at the start of inspiration, regulates positive end expiratory pressure during exhalation, and purges sense lines via a pressure transducer module.

    摘要翻译： 具有罗茨鼓风机的便携式机械呼吸机被配置为向患者回路提供所需的气流和压力。 机械呼吸机包括一个可测量由罗茨鼓风机产生的气流的流量计和一个配置成操作连接到患者回路的呼气阀的呼出控制模块。 连接在罗茨鼓风机和患者回路之间的偏压阀被特别地构造成产生相对于呼气控制模块处的患者回路压力的偏压。 偏压阀进一步构造成衰减由罗茨鼓风机产生的脉动气流，使得流到质量流量计的气体表现出基本恒定的压力特性。 偏压有助于在呼吸开始时关闭呼气阀，调节呼气期间的呼气末正压，并通过压力传感器模块清除感测线。

    Medical ventilator
    18.
    发明授权
    Medical ventilator 失效

    公开(公告)号：US5494028A

    公开(公告)日：1996-02-27

    申请号：US116701

    申请日：1987-11-04

    申请人： Douglas F. DeVries ,  Lindon A. Baker

    发明人： Douglas F. DeVries ,  Lindon A. Baker

    IPC分类号： F16K1/36 ,  A61M16/00 ,  A61M16/12 ,  A61M16/20 ,  A62B9/02 ,  F16K31/44 ,  F16K39/02

    CPC分类号： A61M16/00 ,  A61M16/204 ,  A61M16/205 ,  A62B9/02 ,  A61M16/12 ,  A61M2016/0039

    摘要： A medical ventilator having a valve which controls the flow of gas from a pressurized gas source to a patient for inhalation. Flow through the valve is choked and pressure upstream of the valve is held stable so that a known relationship exists between the position of the valve and the flow rate through the valve. An open loop control system causes the valve to open or close as needed to deliver a preselected tidal volume of gas to the patient on each breath. Since the flow rate is known, no feedback to the controller regarding actual flow conditions is required. The exact positioning of the valve and length of time that the valve is to be held open is predetermined by the controller before the breath is delivered, and is repeated for subsequent breaths. Preferably, the valve is driven by a stepping motor, and the controller comprises a microcomputer. The controller compensates for ramping of the stepping motor as the valve opens and closes in determining the positions of the valve required to deliver the preselected tidal volume. To ensure precise engagement between a valve member and a valve seat, the valve member is mounted on a flexible, linear wire. Additionally, a spirally-wound spring surrounds a stepping motor shaft and biases the shaft so as to close the valve in the event of a power loss.

    Ventilator exhalation valve
    19.
    发明授权
    Ventilator exhalation valve 失效
    呼吸机呼气阀

    公开(公告)号：US5072729A

    公开(公告)日：1991-12-17

    申请号：US441190

    申请日：1989-11-21

    申请人： Douglas F. DeVries

    发明人： Douglas F. DeVries

    IPC分类号： A61M16/20

    CPC分类号： A61M16/20 ,  A61M16/205

    摘要： A valve in a medical ventilator opens and closes as is needed to permit venting of respiratory gases from a patient to the atmosphere. Changes in position of the valve are caused by a stepper motor, which is joined to the valve by a mechanical linkage. The stepper motor, in turn, is powered by electronic signals from a microcomputer controller. The position of the valve is controlled on a closed loop basis by the controller, which receives feedback regarding the pressure of the proximal gases from a pressure transducer. The valve is uniquely designed to enable the controller to cause the valve to open quickly once the patient begins to exhale, and to permit accurate control over the proximal pressure as the valve is approaching the closed position. In particular, the valve comprises a poppet and a valve seat which have curved mating surfaces, with the curved surface on the poppet being truncated so that pressure gain variance is minimized over the range of positions of the poppet relative to the valve seat. To enhance this improved pressure gain characteristic, a cam in the linkage between the poppet and stepper motor has a variable pitch. All of the components of the valve which are exposed to respiratory gases are easily removed for sterilization and replacement. Further, the poppet is movable to ensure complete closure of the valve despite variability in the tolerances of the replaceable components.

    摘要翻译： 医疗呼吸机中的阀门按需要打开和关闭，以允许呼吸气体从患者排放到大气中。 阀的位置变化是由步进马达引起的，该马达通过机械连杆与阀连接。 步进电机又由微机控制器的电子信号供电。 通过控制器在闭环的基础上控制阀的位置，该控制器从压力传感器接收关于近端气体的压力的反馈。 该阀具有独特的设计，使得控制器能够在患者开始呼气时使阀门快速打开，并且允许在阀门正在接近关闭位置时对近端压力进行精确控制。 特别地，阀包括具有弯曲配合表面的提升阀和阀座，其中提升阀上的弯曲表面被截断，使得在提升阀相对于阀座的位置范围内压力增益变化最小化。 为了提高这种改进的压力增益特性，提升阀和步进电动机之间的连接中的凸轮具有可变的间距。 暴露于呼吸气体的阀门的所有组件都可以很容易的去除以进行灭菌和更换。 此外，尽管可更换部件的公差是可变的，但是提升阀可移动以确保阀的完全关闭。