Airway valve to facilitate re-breathing, method of operation, and
ventilator circuit so equipped

    公开(公告)号:US6098622A

    公开(公告)日:2000-08-08

    申请号:US173517

    申请日:1998-10-15

    摘要: An airway valve for re-breathing, a ventilator circuit including same and a method of operating the airway valve. The airway valve includes a housing having first and second primary passages extending through the wall thereof and mutually directly communicating within the housing through a spring-biased valve assembly in the form of first and second diaphragms respectively and simultaneously movable in tandem within the housing into and out of contact with first and second valve seats on a valve body with which the first primary passage communicates. The valve assembly also controls diversion of air flow between the first primary passage and the second primary passage into and through an enlarged volume defined by a re-breathing loop external to the housing via first and second diversion passages, which also extend through the wall of the housing. In a normal operating mode of the airway valve, a first diaphragm engages the first valve seat to preclude communication between the first primary passage and the first diversion passage, while the second diaphragm remains out of contact with the second valve seat to permit communication within the housing between the first and second primary passages and directing air flow therethrough. In a re-breathing mode of the airway valve, the second diaphragm contacts the second valve seat to preclude direct communication between the first and second primary passages, while withdrawal of the first diaphragm from the first valve seat opens communication between the first primary passage and the first diversion passage routing air flow through the re-breathing loop and back to the interior of the housing via the second diversion passage, which is in communication with the second primary passage. The diaphragms are spring-biased to the normal operating mode of the valve, and moved to the re-breathing mode by application of a differential air pressure to one of the diaphragms to overcome the spring force.

    Low deadspace airway adapter
    3.
    发明授权
    Low deadspace airway adapter 有权
    低死空气道适配器

    公开(公告)号:US07980246B2

    公开(公告)日:2011-07-19

    申请号:US11418852

    申请日:2006-05-05

    IPC分类号: A61M16/00 A62B7/02 A62B9/04

    摘要: An airway adapter suitable for use with patients having low tidal volumes, e.g., neonates, which minimizes deadspace in the airway and promotes smooth flow of gases through the adapter. The adapter includes a first portion adapted to couple to a tubular adapter, such as an endotracheal tube adapter, and a second portion adapted to couple to a ventilation tube. A longitudinally compressible member is coupled to the first portion to minimize deadspace in the adapter. A portion of the compressible member resiliently contacts and seals against a tubular adapter upon assembly of the airway adapter therewith.

    摘要翻译: 适用于具有低潮气量的患者(例如新生儿)的气道适配器,其最小化气道中的死角并促进气体通过适配器的平稳流动。 适配器包括适于联接到诸如气管内插管适配器的管状适配器的第一部分和适于联接到通气管的第二部分。 纵向可压缩构件联接到第一部分以最小化适配器中的死角。 当气道适配器组装时,可压缩构件的一部分弹性地接触并密封管状适配器。

    Fluid resistant airway adapter
    4.
    发明授权
    Fluid resistant airway adapter 有权
    耐流体气道适配器

    公开(公告)号:US06935338B1

    公开(公告)日:2005-08-30

    申请号:US10790321

    申请日:2004-03-01

    CPC分类号: A61M16/08 A61M16/085

    摘要: An airway adaptor that includes a tubular body having a first gas flow passage defined therein. A protrusion extends from an interior wall of the tubular body into the gas flow passage. The protrusion includes a distal end portion spaced apart from the interior wall of the tubular body, and a second gas flow passage defined through the protrusion. An inlet to the second gas flow passage is provided at the distal end portion of the protrusion, and an outlet of the second gas flow passage is provided at an exterior portion of the tubular body. A pair of sidewalls are disposed on the distal end portion of the protrusion. Each sidewall is generally parallel to a direction of a flow of gas through the first passage. The inlet of the second gas flow passage is disposed between the pair of sidewalls.

    摘要翻译: 一种气道适配器,其包括具有限定在其中的第一气体流动通道的管状体。 突起从管状体的内壁延伸到气体流动通道中。 突出部包括与管状体的内壁间隔开的远端部分,以及通过突出部限定的第二气体流动通道。 第二气体流动通道的入口设置在突起的远端部分处,第二气体流动通道的出口设置在管状体的外部。 一对侧壁设置在突起的远端部分上。 每个侧壁通常平行于通过第一通道的气体流动的方向。 第二气体流动通道的入口设置在一对侧壁之间。

    Method and apparatus for conveniently setting a predetermined volume for re-breathing
    5.
    发明授权
    Method and apparatus for conveniently setting a predetermined volume for re-breathing 有权
    用于方便地设定用于再呼吸的预定体积的方法和装置

    公开(公告)号:US06408848B1

    公开(公告)日:2002-06-25

    申请号:US09537028

    申请日:2000-03-28

    IPC分类号: A62B900

    摘要: The present invention provides a method and device for conveniently setting the volume of a variable-length tubing loop used in a re-breathing circuit to various selected predetermined values. The device includes a card of an inelastic, disposable material which is attachable to a portion of the tubing loop or adjacent structure and which has marked on it several positions to which the tubing loop can be extended to set the volume of the loop at selected predetermined values. The card is preferably formed of a substantially rigid material which may be configured to fold around the tubing loop and adjacent structures to provide support and protection during shipping and handling of the device. The card may include instructions for use of the tubing loop printed on an outer surface thereof. Some or all of the card may be detachable from the tubing loop so that once the desired tubing volume is set, all or a portion of the card may be removed and disposed of.

    摘要翻译: 本发明提供了一种用于方便地将再呼吸回路中使用的可变长管道回路的体积设定为各种所选择的预定值的方法和装置。 该装置包括非弹性的一次性材料的卡片,该卡片可连接到管道环路或相邻结构的一部分,并且在其上标记了几个位置,管道环路可以延伸到该位置,以将环路的体积设定在选定的预定 价值观。 卡优选地由基本上刚性的材料形成,该材料可被配置为在管道环和相邻结构周围折叠,以在装置运输和处理期间提供支撑和保护。 卡片可以包括使用印刷在其外表面上的油管环的说明书。 卡的一些或全部可以从管道回路中拆卸,使得一旦设定了所需的管道体积,卡的全部或一部分可以被去除和处理。

    Reliability-enhanced apparatus operation for re-breathing and methods of effecting same
    8.
    发明授权
    Reliability-enhanced apparatus operation for re-breathing and methods of effecting same 失效
    用于再呼吸的可靠性增强的装置操作及其影响的方法

    公开(公告)号:US06763829B2

    公开(公告)日:2004-07-20

    申请号:US10047573

    申请日:2002-01-14

    IPC分类号: A62B902

    摘要: Methods and apparatus for enhancing reliability of, and monitoring, the operation of airway valves to enhance patient safety. Pneumatic control line pressure (positive or negative) for actuation of the airway valve may be specified at a given magnitude or within a selected range and monitored continuously. Reduced or excessive pressure may be compensated by actuation of a pressure source or a bleed valve, and monitoring may be effected so as to warn the user of any deviation from the range, or deviations of selected magnitudes or frequencies or a combination thereof. The inspired volume of CO2 may be monitored using air flow and CO2 sensing, with detection of excessive CO2 volume triggering a warning. Similarly, measured end-tidal or end-inspired CO2 or other appropriate measures of CO2 concentration may be employed as a warning trigger. Other driving energy sources for airway valves, and monitoring thereof, are also disclosed.

    摘要翻译: 提高气道瓣膜运行可靠性和监测的方法和装置,以提高患者的安全性。 用于致动气道瓣膜的气动控制管路压力(正或负)可以在给定量级或选定范围内被指定并连续监测。 可以通过致动压力源或放气阀来补偿减压或过大的压力,并且可以进行监控以便警告使用者偏离范围或选定幅度或频率的偏差或其组合的任何偏差。 可以使用气流和二氧化碳感测来监测二氧化碳的启发,同时检测到二氧化碳量过大会触发警告。 类似地,可以使用测量的潮汐或末端启发的二氧化碳或其他适当的二氧化碳浓度测量作为警告触发。 还公开了用于气道瓣膜的其它驱动能源及其监视。

    Reliability-enhanced apparatus operation for re-breathing and methods of effecting same
    9.
    发明授权
    Reliability-enhanced apparatus operation for re-breathing and methods of effecting same 失效
    用于再呼吸的可靠性增强的装置操作及其影响的方法

    公开(公告)号:US06575164B1

    公开(公告)日:2003-06-10

    申请号:US09410355

    申请日:1999-09-30

    IPC分类号: A62B0902

    摘要: Methods and apparatus for enhancing reliability of, and monitoring the operation of airway valves to enhance patient safety. Pneumatic control line pressure (positive or negative) for actuation of the airway valve may be specified at a given magnitude or within a selected range and monitored continuously. Reduced or excessive pressure may be compensated by actuation of a pressure source or a bleed valve, and monitoring may be effected so as to warn the user of any deviation from the range, or deviations of selected magnitudes or frequencies or a combination thereof. The inspired volume of CO2 may be monitored using air flow and CO2 sensing, with detection of excessive CO2 volume triggering a warning. Similarly, measured end-tidal or end-inspired CO2 or other appropriate measures of CO2 concentration may be employed as a warning trigger. Other driving energy sources for airway valves, and monitoring thereof, are also disclosed. In addition, alternative devices and approaches for initiation of re-breathing, and their monitoring, are disclosed.

    摘要翻译: 提高气道瓣膜的可靠性和监测手术操作以增强患者安全的方法和装置。 用于致动气道瓣膜的气动控制管路压力(正或负)可以在给定量级或选定范围内被指定并连续监测。 可以通过致动压力源或放气阀来补偿减压或过大的压力,并且可以进行监控,以便警告使用者偏离范围或选定幅度或频率的偏差或其组合的任何偏差。 可以使用气流和二氧化碳感测来监测二氧化碳的启发,同时检测到二氧化碳量过大会触发警告。 类似地,可以使用测量的潮汐或末端启发的二氧化碳或其他适当的二氧化碳浓度测量作为警告触发。 还公开了用于气道瓣膜的其它驱动能源及其监视。 此外,公开了用于启动再呼吸的替代装置和方法及其监测。