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    • 17. 发明授权
    • Air filter for medical ventilation equipment and the like
    • 用于医疗通风设备的空气过滤器等
    • US5230727A
    • 1993-07-27
    • US894447
    • 1992-06-05
    • Robert D. PoundLockett E. Wood
    • Robert D. PoundLockett E. Wood
    • A61M16/10B01D46/10B01D46/42
    • B01D46/0012A61M16/105B01D46/0005B01D46/10
    • An inexpensive, bi-directional, low flow resistance air filter for medical ventilation equipment and the like includes a disposable shell possessing a cylindrical conduit terminating in an exponentially curved radially outwardly flaring surface. The exponentially curved construction minimizes dead space and hence also flow resistance Radially and axially spaced stepped annular surfaces connected by short axially extending cylindrical sidewall portions at a distal end of the shell function as coupling and sealing surfaces. A ring of adhesive applied adjacent a peripheral edge of an electret filter disk mounts the filter disk internally within the shell. An elastic retaining band detachably secures an equipment connection adapter to the shell, such that a technician may easily and quickly replace the shell and filter. The equipment connection adapter possesses clamping ring and coupling rim surfaces dimensioned in close conformance with the coupling and sealing surfaces of the shell to ensure a fluid tight connection. The filter assembly allows rapid replacement of contaminated filter components to protect patients from diseases caused by bacterial and viral microorganisms, while minimizing medical waste.
    • 用于医疗通风设备等的便宜的双向低流阻空气过滤器包括具有终止于指数曲线的径向向外扩张表面的圆柱形导管的一次性外壳。 指数曲线构造使死空间最小化并且因此还具有流动阻力在壳体的远端处由短轴向延伸的圆柱形侧壁部分连接的径向和轴向间隔开的阶梯状环形表面用作耦合和密封表面。 在靠近驻极体过滤盘的周缘施加的粘合剂环将过滤盘内部安装在壳体内。 弹性保持带将设备连接适配器可拆卸地固定到壳体上,使得技术人员可以容易且快速地更换壳体和过滤器。 设备连接适配器具有夹紧环和耦合边缘表面,其尺寸与壳体的耦合和密封表面紧密一致,以确保流体紧密连接。 过滤器组件允许快速更换污染的过滤器部件,以保护患者免受细菌和病毒微生物引起的疾病,同时最大限度地减少医疗废物。