ANORDNING FOR REGLERING AV FLODET AV INTRAVENOS VETSKA TILL EN PATIENT FRAN EN VETSKEKELLA OCH ANORDNING FOR REGLERING AV VETSKEFLODET FRAN EN KELLA TILL EN PATIENT

摘要

Flow from an input line 12 to an output line 16 is controlled by adjustment of a diaphragm 32 relative to a ring 30 which surrounds the end of an outlet passage 26 but has a notch for low flow rates. Manual setting is possible by screwing in a knob 40 which presses a plunger 36 against the diaphragm 32. Control may also be effected by a stepping motor coupled to the knob 40 and responsive to comparison of a desired flow rate with the rate measured by a drop sensor 62.