| 摘要 |
PURPOSE:To seal pump chambers completely from outside by deforming ring-like diaphragms through disk-like oscillation boards for pumping action when blood or a medical liquid or the like are to be transmitted. CONSTITUTION:Diaphragms 17, 18 are fixed and held to a housing 1 through presser feet 21, 22, and pump chambers Pr, Pl separated in fluid seal are formed among them. When a motor 2 is driven, a conical ring 31 is rotated through a support shaft, and oscillation boards 9, 10 perform a conical oscillation movement, i.e. ''swing of top'' around a diaphragm C. Accordingly, the places where the diaphragms 17, 18 are pressed to the housing 1 are moved, thereby the fluid is sucked by both pumps Pr, Pl on the side connecting to a suction port 25, and the fluid is concurrently compressed and discharged by both pumps Pr, Pl on the side connecting to a discharge port 26. |
