| 摘要 |
<p>A peristaltic pumping mechanism (50) comprises a flexible fluid pumping element (55) arranged in a partially circular path and being sandwiched between two discs (51) and coupled to the respective discs (51). Motion is imparted to both discs (51) to reduce and increase the spacing between adjacent points on the circumference of the discs (51) and thereby impart a circular rolling contact to the pumping element (55) producing a peristaltic pumping action. In a second embodiment the pumping element (55) is sandwiched between a movable helically shaped disc and a complementary shaped pumping bed.</p> |
