| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress fluctuation of a flow rate of infused fluid caused by long use in a finger-type infusion pump. <P>SOLUTION: At upstream of a pump mechanism 2, there is provided a pressurization mechanism 3 comprising a plurality of pressurization fingers 31 arranged in the same direction as the arrangement direction of the fingers 21 of the pump mechanism 2, cams 32 for separately driving forward and backward each of pressurization fingers 31, and pressurization pressing plates 34 disposed facing the leading edges of a plurality of the pressurization fingers 31 to provide an infusion tube T with peristaltic motion by the forward/backward motion of each pressurization finger 31. In the process of ejecting the fluid in the infusion tube T through peristaltic motion provided by driving forward and backward each finger 31 of the pump mechanism 2, the cross-sectional shape of the infusion tube T opened is maintained in an approximately perfect circle shape by making positive the pressure in the infusion tube T on the upstream side of the pump finger 21 closing the infusion tube T by the pressurization mechanism 3. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
