会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Volumetric metering unit for intravenous fluid addition
    • 静脉注射液体积计量单位
    • US4559044A
    • 1985-12-17
    • US404811
    • 1982-08-03
    • Thomas P. RobinsonDon M. KillmanAndrew P. MattsonJames E. Hudson, Jr.
    • Thomas P. RobinsonDon M. KillmanAndrew P. MattsonJames E. Hudson, Jr.
    • G01G17/06A61M5/168G01F11/08A61M5/00
    • G01F11/08A61M5/16809
    • Three embodiments of a metering unit (10, 140, 200) are provided for metering fluid from a container (14) for infusion into a patient. The first embodiment of the metering unit (10) includes a cassette (26) formed of halves (28, 30). The halves (28, 30) each have a concave reservoir portion (36) formed on the inner face (32) thereon. Entry and exit channels (38, 42) extend from the reservoir portions adjacent entry and exit orifices (40, 44). Entry and exit port portions (46, 50) are formed in each half (28, 30). Flexible entry and exit valves (58, 64, 86 and 88) are movable between an open position, permitting fluid to flow through the orifices, to a closed position, preventing fluid from flowing through the orifices. The halves are separated by a flexible diaphragm (70) which divides a reservoir (76) into first and second compartments (78, 80). One entry valve is opened to permit fluid from the entry port (82) to flow into one compartment, the fluid flowing into the compartment moving the flexible diaphragm to force the fluid in the other compartment out to the exit port (84). The position of the valves is then interchanged, permitting fluid to flow into the other compartment and forcing the fluid in the first compartment into the exit port. A cassette (206) in the third embodiment of the unit (200) includes identical halves (208, 210) sonically bonded together. A diaphragm (296) separates parallel channels (218, 222) to reduce head pressure channel volume variations. Grooves (228, 230) are provided in the reservoir portions (216) to prevent fluid trappage between the diaphragm and portion wall. In all cassette embodiments, an activating frame operating the cassette prevents the positioning of all valves in the open position simultaneously.
    • 计量单元(10,140,​​200)的三个实施例被提供用于从容器(14)计量流体以输注到患者体内。 计量单元(10)的第一实施例包括由半部(28,30)形成的盒(26)。 半部(28,30)各自具有形成在其上的内表面(32)上的凹形容纳部分(36)。 入口和出口通道(38,42)从邻近入口和出口孔(40,44)的储存器部分延伸。 入口和出口部分(46,50)形成在每一半(28,30)中。 柔性入口和出口阀(58,64,86和88)可以在允许流体流过孔口的打开位置之间移动到关闭位置,从而防止流体流过孔口。 一半由柔性隔膜(70)分开,该隔膜将贮存器(76)分成第一和第二隔室(78,80)。 一个入口阀被打开以允许来自入口(82)的流体流入一个隔室,流入隔间的流体移动柔性膜片,以迫使另一隔室中的流体流出出口(84)。 然后将阀的位置互换,允许流体流入另一隔室并迫使第一隔室中的流体进入出口。 单元(200)的第三实施例中的盒(206)包括声音结合在一起的相同的半部(208,210)。 隔膜(296)分离平行通道(218,222)以减小头部压力通道体积变化。 凹槽(228,230)设置在储存部分(216)中,以防止隔膜和部分壁之间的流体堵塞。 在所有盒式磁带实施例中,操作盒的启动框防止所有阀在同时处于打开位置的位置。