Finger Pump (from Internet Glossary of Pumps)
Finger Pump
Finger pumps push a series of rods against a flexible tubing in sequence, forcing fluid along the tube. In this pump the fluid moves from left to right.

Since nothing but the tube actually touches the fluid, the fluid can be kept clean so this pump is often found in medical applications, pumping blood or other fluids.

The individual fingers can be operated by a rotating camshaft above them, by individual solenoids electronically actuated in sequence, or by other methods.

(This is a 12-frame animation, converted to animated GIF format for Internet use and transmission. (Note: On some Internet browsers it may be displayed much less smoothly than the CD-ROM version, where the frames are timed to a thousandth of a second.))

Go to web page describing Statistics Explained

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Last modified February, 2002
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