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    • 6. 发明授权
    • Pressure gauge for medical applications
    • 医疗用压力表
    • US5000049A
    • 1991-03-19
    • US227580
    • 1988-08-02
    • Robert P. CooperSaid S. Hilal
    • Robert P. CooperSaid S. Hilal
    • A61B5/0215G01L7/08
    • A61B5/0215G01L7/082A61M5/16854
    • An apparatus for measuring fluid pressure in a passage or tube for use with medical apparatus such as balloon catheters. A diaphragm gauge is provided and includes a case which houses a first diaphragm, a translation mechanism connected to the first diaphragm and a pointer attached to the translation mechanism for providing readouts of fluid pressure. The diaphragm is coupled to a fluid passage, such that changes in fluid pressure cause the diaphragm to activate the translation mechanism, thus providing readouts by means of the pointer. A second diaphragm is provided for sealing the fluid passage from the first diaphragm, for preventing transfer of materials between the first diaphragm and the passage. The second diaphragm is of a biocompatible, nonpyrogenic, sterlizable material, such a polyurethane, polyvinylchloride, or polyethylene. Alternatively, a biocompatible, nonpyrogenic coating may be provided on the first diaphragm for sealing it from the fluid passage. In an alternative embodiment, the fluid passage is configured for tightly receiving a catheter, the wall of which contacts the first diaphragm for transmitting pressure due to fluid within the catheter to the first diaphragm. The translation mechanism may be a mechanical lever for converting diaphragm movements to rotational movement of the pointer, or it may be an electronic transducer, in which case the pointer and dial are replaced by an electronically actuable display.
    • 一种用于测量用于医疗设备如球囊导管的通道或管中的流体压力的装置。 提供隔膜计,并且包括容纳第一隔膜的壳体,连接到第一隔膜的平移机构和连接到平移机构的指示器,用于提供流体压力的读数。 隔膜联接到流体通道,使得流体压力的变化导致膜片激活平移机构,从而通过指示器提供读数。 设置第二隔膜用于密封来自第一隔膜的流体通道,以防止材料在第一隔膜和通道之间的转移。 第二隔膜是生物相容性,非致死性,可灭菌的材料,如聚氨酯,聚氯乙烯或聚乙烯。 或者,可以在第一隔膜上提供生物相容的非致热性涂层,以将其与流体通道密封。 在替代实施例中,流体通道构造成用于紧密地接收导管,其导管接触第一隔膜以将导管内的流体的压力传递到第一隔膜。 平移机构可以是用于将膜片运动转换成指针的旋转运动的机械杆,或者它可以是电子换能器,在这种情况下,指针和表盘由电子可启动显示器代替。