专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5025829A Parenteral check valve 失效
标题翻译：肠外止回阀
公开(公告)号：US5025829A
公开(公告)日：1991-06-25
申请号：US471876
申请日：1990-01-29
申请人： Floyd V. Edwards , Scott H. DeWitt
发明人： Floyd V. Edwards , Scott H. DeWitt
IPC分类号： A61M39/24 , F16K15/14
CPC分类号： A61M39/24 , F16K15/144 , A61M2039/242 , A61M2039/2433 , A61M2039/246 , Y10T137/7838 , Y10T137/7895
摘要： A check valve, including an inlet housing portion and outlet housing portion which are adapted to be snap-fit together, is inexpensively and quickly produced using valve disks which are capable of providing variable fluid flow resistance. The valve disk is stamped from flexible materials having a Shore A durometer hardness in the range of from about thirty to about one hundred (e.g., a thermoplastic elastomer). Flat, circular shapes having at least three, arcuately-shaped windows defined therein, with an outer sealing periphery being joined to a circular closing member by webs which separate the windows, provide a valve disk of substantial manufacture ease. The check valve is adapted to be used in primary and secondary solution lines, and its variable resistance to fluid flow is enable by merely increasing or decreasing the combined surface area of the windows, increasing or decreasing a preload provided by extending a valve seat in the inlet housing towards the valve disk, increasing or decreasing thicknesses of a valve disk, or varying the proportion of the diameters of the closing member to the valve seat.
摘要翻译：包括入口壳体部分和出口壳体部分的止回阀，其适于卡扣配合在一起，使用能够提供可变的流体流动阻力的阀盘便宜且快速地产生。阀盘由具有约30至约100（例如热塑性弹性体）范围内的肖氏A硬度计硬度的柔性材料冲压。扁平的圆形形状，其中限定有至少三个弧形窗口，外部密封周边通过分开窗户的腹板连接到圆形关闭构件，提供了实质上制造容易的阀盘。止回阀适用于初级和二级溶液管路，其可变阻抗流体流动仅通过增加或减少窗户的组合表面积来实现，增加或减少通过在阀座中延伸阀座而提供的预载荷入口壳体朝向阀盘，增加或减小阀盘的厚度，或改变封闭构件的直径与阀座的比例。

2. 发明授权

US5324267A Slitted pressure cuff check valve 失效
标题翻译：分切压力袖带止回阀
公开(公告)号：US5324267A
公开(公告)日：1994-06-28
申请号：US944477
申请日：1992-09-14
申请人： Scott H. DeWitt
发明人： Scott H. DeWitt
IPC分类号： F04B33/00 , F04B39/10 , F16K15/14 , A61M37/00 , F04B43/00 , F16K17/26
CPC分类号： F04B33/00 , F04B39/1046 , F04B39/108 , F16K15/147 , Y10T137/7779
摘要： A check valve for disposable pressure infusion systems having an inflation bulb with a single open end includes a valve body with a pair of intake ports and a discharge port. Disposed at such single open end of the inflation bulb, one of the intake ports permits a flow of pressurizing air from the inflation bulb when squeezed to a pressure cuff through flexible tubing coupled to the discharge port. A flexible diaphragm having slitted openings is disposed within the check valve which provides for opening and closure of a specific port alternatively during squeezes and release of the inflation bulb.
摘要翻译：一次性压力输注系统的止回阀具有一个具有一个开放端的充气泡，包括具有一对进气口和排出口的阀体。在充气灯泡的这种单个开口端设置，其中一个进气口允许当通过耦合到排出口的柔性管道将压缩空气从充气球流出时被挤压到压力套管。具有切口开口的柔性隔膜设置在止回阀内，其提供在充气泡沫的挤压和释放期间交替地打开和关闭特定端口。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式