| 摘要 |
A medication infusion device having a finger type pump unit (9) is disclosed. In said pump unit (9) plural fingers (17, 18, 19) are displaced in a predetermined sequence by plural cams (16) driven by drive means (15) such as a motor, so that a feeding tube (14) for liquid medication, placed between said fingers (17, 18, 19) and a cap (20), is squeezed by the fingers to infuse liquid medication into a human body. The fingers comprise at least three fingers (17, 18, 19) arranged side-by-side, with a central (18) and side fingers (17, 19) arranged on either sides of the central finger. The central (18) and side fingers (17, 19) are formed integrally with a support member (21a, b) and are carried at the same side ends by the support member (21,a,b) in cantilevered fashion. The side fingers (17, 19) have a valving function for squeezing the feeding tube (14) at substantially one point, and the central fingers (18) has a pumping function for squeezing the feeding tube (14) over a required length. Each finger (17, 18, 19) has its cantilevered end reduced in thickness for use as spring means.
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