Peak flow meter for measuring ventilatory capacity
    2.
    发明授权
    Peak flow meter for measuring ventilatory capacity 失效
    用于测量通风能力的峰值流量计

    公开(公告)号:US5672833A

    公开(公告)日:1997-09-30

    申请号:US593911

    申请日:1996-01-30

    IPC分类号: A61B5/08 A61B5/087 A61B5/097

    CPC分类号: A61B5/0871

    摘要: A peak flow meter has a body forming a chamber along which a piston can be moved against the force of a spring by a subject exhaling through an inlet into the chamber. A slot runs along a side of the chamber to allow the air to escape and a pointer is movable along the slot by the piston to indicate its maximum displacement. A deflector at the chamber inlet concentrates the flow through the chamber towards the side at which the slot is located. By the use of such a deflector it is possible to measure reliably relatively small peak exhalation rates.

    摘要翻译: 峰值流量计具有形成室的主体,活动可以通过主体通过入口进入腔体抵抗弹簧的力而移动到该腔室上。 狭槽沿着腔室的一侧延伸以允许空气逸出,并且指针可以通过活塞沿着狭槽移动以指示其最大位移。 腔室入口处的偏转器将通过腔室的流动物朝向槽所在的一侧集中。 通过使用这种偏转器,可以可靠地测量相对小的峰值呼气速率。