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公开(公告)号：US4323894A
公开(公告)日：1982-04-06
申请号：US148386
申请日：1980-05-09
摘要： A circuit to drive electromagnetically actuated displays. The circuit maintains a precise current level regardless of variations in supply voltage and drive coil resistance. The inductance of the drive coil is utilized to increase the efficiency of the current control.
摘要翻译： 驱动电磁致动显示器的电路。 无论电源电压和驱动线圈电阻如何变化，电路都保持精确的电流电平。 利用驱动线圈的电感来提高电流控制的效率。
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公开(公告)号：US3948255A
公开(公告)日：1976-04-06
申请号：US542212
申请日：1975-01-20
申请人： Kenneth L. Davidson
发明人： Kenneth L. Davidson
CPC分类号： A61M16/04 , A61M16/0048 , A61M16/0409 , A61M16/0415 , A61M16/06 , Y10T137/86863
摘要： Apparatus for use in artificial respiration and the like, comprising an elongated tubular body having a flexible inner end portion adapted for insertion in the esophagus or trachea of a patient and an outer end portion for connection to a source of fluid. An inflatable cuff is carried at the inner end portion. The upper end portion of the tubular body includes an adapter, a seal for the lumen of the tubular body carried by the adapter and a plurality of closable openings spaced in the upper portion between the seal and the outer end of the tubular body. In the esophageal mode, the lumen of the tubular body is sealed to prevent the flow of fluids between the upper portion and lower portion of the tubular body. The openings in the upper portion are open to permit the flow of fluid therethrough into the patient's trachea and lungs. In the tracheal mode, the openings in the upper portion are closed, and the lumen of the tubular body is open to provide fluid communication through the tubular body.
摘要翻译： 用于人造呼吸等的装置，包括细长的管状体，其具有适于插入患者的食管或气管的柔性内端部分和用于连接到流体源的外端部分。 在内端部承载有充气袖带。 管状体的上端部包括适配器，用于由适配器承载的管状体的内腔的密封件和在密封件和管状体的外端之间的上部分隔开的多个可闭合开口。 在食管模式中，管状体的内腔被密封以防止流体在管状体的上部和下部之间流动。 上部的开口是敞开的，以允许流体流入病人的气管和肺部。 在气管模式中，上部的开口是闭合的，并且管状体的内腔是敞开的，以提供通过管状体的流体连通。
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