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公开(公告)号：US5503627A
公开(公告)日：1996-04-02
申请号：US239884
申请日：1994-05-09
CPC分类号： A61M5/24 , A61M5/30 , A61M2005/2488 , A61M2005/3118 , A61M2005/312 , A61M2205/583 , A61M5/2053 , A61M5/3007 , A61M5/486
摘要： A needleless injection device has a housing containing a pilot valve connectable to a compressed gas source. A two stage power amplifying valve includes a main valve operatively connected to the pilot valve. The pilot valve and main valve form a two-stage valve with the pilot valve activatable to open the main valve utilizing gas pressure. Compressed gas in a reservoir flows through the open main valve to drive a plunger into an ampule to inject an injectant through a patient's skin. Interlocks are provided to resist inadvertent actuation of the device and a indicator indicates whether there is sufficient gas pressure in the device for another injection.
摘要翻译： 无针注射装置具有容纳可连接到压缩气体源的先导阀的壳体。 两级功率放大阀包括可操作地连接到先导阀的主阀。 先导阀和主阀形成两级阀，先导阀可启动，以利用气压打开主阀。 储存器中的压缩气体流过打开的主阀，以将柱塞驱动到安瓿中，以通过患者的皮肤注入注射剂。 提供联锁以防止装置的无意的致动，并且指示器指示装置中是否有足够的气体压力用于另一次注射。
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公开(公告)号：US5312335A
公开(公告)日：1994-05-17
申请号：US714892
申请日：1991-06-13
CPC分类号： A61M5/24 , A61M5/30 , A61M2005/2488 , A61M2005/3118 , A61M2005/312 , A61M2205/583 , A61M5/2053 , A61M5/3007 , A61M5/486
摘要： A needleless injection device has a housing containing a pilot valve connectable to a compressed gas source. A two stage power amplifying valve includes a main valve operatively connected to the pilot valve. The pilot valve and main valve form a two-stage valve with the pilot valve activatable to open the main valve utilizing gas pressure. Compressed gas in a reservoir flows through the open main valve to drive a plunger into an ampule to inject an injectant through a patient's skin. Interlocks are provided to resist inadvertent actuation of the device and a indicator indicates whether there is sufficient gas pressure in the device for another injection. An ampule for needleless injection has a nozzle length to nozzle diameter ratio of from 2.0 to 5.0 and a throat cone flair angle of from 10-14 degrees.
摘要翻译： 无针注射装置具有容纳可连接到压缩气体源的先导阀的壳体。 两级功率放大阀包括可操作地连接到先导阀的主阀。 先导阀和主阀形成两级阀，先导阀可启动，以利用气压打开主阀。 储存器中的压缩气体流过打开的主阀，以将柱塞驱动到安瓿中，以通过患者的皮肤注入注射剂。 提供联锁以防止装置的无意的致动，并且指示器指示装置中是否有足够的气体压力用于另一次注射。 用于无针注射的安瓿具有喷嘴长度与喷嘴直径比为2.0至5.0，喉锥角度为10-14度。
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公开(公告)号：US5064413A
公开(公告)日：1991-11-12
申请号：US434250
申请日：1989-11-09
CPC分类号： A61M5/30 , A61M2205/583 , A61M5/2053 , A61M5/486
摘要： A needleless injection device has a housing containing a pilot valve connectable to a compressed gas source. A main valve is operatively connected to the pilot valve. The pilot valve and main valve form a two-stage valve with the pilot valve activatable to open the main valve utilizing gas pressure. Compressed gas in a reservoir flows through the open main valve to driven a plunger into an ampule to inject an injectant through a patient's skin.
摘要翻译： 无针注射装置具有容纳可连接到压缩气体源的先导阀的壳体。 主阀可操作地连接到先导阀。 先导阀和主阀形成两级阀，先导阀可启动，以利用气压打开主阀。 储存器中的压缩气体流过打开的主阀，以将柱塞驱动到安瓿中，以通过患者皮肤注入注射剂。
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