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    • 54. 发明申请
    • DRIVE UNIT FOR MEDICAL EQUIPMENT
    • 医疗设备驱动单元
    • WO1997022373A1
    • 1997-06-26
    • PCT/JP1996003605
    • 1996-12-10
    • NIPPON ZEON CO., LTD.MIYATA, ShinichiITO, Kiyotaka
    • NIPPON ZEON CO., LTD.
    • A61M01/10
    • A61M1/106A61M1/107A61M1/1072A61M1/1086A61M1/125
    • A drive unit for medical equipment in which, when a pressure detected by a conduit pressure sensor (15) becomes lower than a predetermined value, a first solenoid valve (63) is closed and a second solenoid valve (68) is opened, so that a conduit (18) is replenished with a gas from a secondary gas tank (64), and the amount of gas to be supplied is calculated based upon a change in the pressure detected by a tank pressure sensor (65). In using the equipment, the leakage of gas under normal condition can be easily distinguished from the leakage of gas under abnormal condition. Desirably, the drive unit has a gas supply device (60) which detects the pressure in the conduit (18) at a timing of changing a balloon (22) from the contracted state over to the inflated state and replenishes the conduit (18) with the gas so that the detected pressure will reach a predetermined value, and further has a control unit (10b) for changing the desired value. Preferably, when the interval between inflation and contraction of the balloon (22) is short, the inflation drive is stopped for one pulse, the pressure in the balloon is stabilized and is then detected, and the gas is replenished based upon this pressure. Preferably, the drive unit has a pressure transmission device having vent grooves (52, 54) to permit the residual fluid existing in the intimate contact between a diaphragm (46) and a first inner surface (49) or a second inner surface (51) to escape to an input port (48) or to an output port (50).
    • 一种用于医疗设备的驱动单元,其中当由管道压力传感器(15)检测到的压力变得低于预定值时,关闭第一电磁阀(63)并打开第二电磁阀(68),使得 补充来自二次气体罐(64)的气体的管道(18),并且基于由罐式压力传感器(65)检测到的压力变化来计算要供给的气体量。 在使用设备时,气体在正常状态下的泄漏可以很容易地与异常情况下的气体泄漏区分开来。 理想地,驱动单元具有气体供给装置(60),其在将气囊(22)从收缩状态改变到膨胀状态的时刻检测导管(18)中的压力,并且用 使得检测到的压力将达到预定值,并且还具有用于改变期望值的控制单元(10b)。 优选地,当气球(22)的充气和收缩之间的间隔短时,一个脉冲的充气驱动停止,气囊中的压力被稳定并被检测,并且基于该压力补充气体。 优选地,驱动单元具有压力传递装置,其具有排气槽(52,54),以允许存在于隔膜(46)和第一内表面(49)或第二内表面(51)之间紧密接触的残留流体, 逃逸到输入端口(48)或输出端口(50)。