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1. 发明授权

US06770067B2 Infusion device and driving mechanism for same 有权
标题翻译：输液器和驱动机构相同
公开(公告)号：US06770067B2
公开(公告)日：2004-08-03
申请号：US10033724
申请日：2001-12-27
申请人： Eric Lorenzen , John Gray , Robert W Bosley
发明人： Eric Lorenzen , John Gray , Robert W Bosley
IPC分类号： A61K922
CPC分类号： A61M5/14216 , A61M5/14276 , A61M5/16877 , A61M2205/8212
摘要： A drive mechanism for delivery of infusion medium. A coil surrounds a piston channel. An armature is located adjacent the coil. The armature is moveable toward a forward position in response to the electromagnetic field produced by activation of the coil. A piston located within the piston channel is moveable within the channel to a forward position in response to movement of the armature. The armature and piston are moved toward a retracted position when the coil is not energized. In the retracted position, a piston chamber formed between the piston and a valve member filled with infusion medium. As the piston is moved to its forward position, piston chamber volume is reduced and pressure within the piston chamber increases and moves the valve member into an open position. Medium from the piston chamber is then discharged into an outlet chamber.
摘要翻译：用于输送输液的驱动机构。线圈围绕活塞通道。电枢位于线圈附近。电枢响应于由线圈的激励产生的电磁场而能够向前移动。位于活塞通道内的活塞可响应于电枢的运动而在通道内可移动到向前位置。当线圈未通电时，电枢和活塞向收缩位置移动。在缩回位置，形成在活塞和填充有输注介质的阀构件之间的活塞室。当活塞移动到其前进位置时，活塞室体积减小，并且活塞室内的压力增加并且将阀构件移动到打开位置。然后将活塞室的介质排出到出口室中。

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