Enteral nutrition is administered in instillator (1) or another medical fluid includes: main body (10) forming chamber (100) and has arrival end (101) and outlet end (103), thimble element (14) is arranged the arrival end (10) in main body (101) and forms entrance (20), medical fluid is set to enter chamber (100), it exports the outlet end (103) of (11) and being arranged makes medical fluid from chamber (100) may be connected to pipe (3), thimble element (14) are rotatably arranged in for being releasably attached drip chamber (1) to connector (2) with connector (15). Cap element (13) is connected to the arrival end (101) of the closing main body (10) of main body (10), cap member (13) integrally with thimble element (14). In this way, drip chamber provide it is a kind of allow to be easy, reliably, have cost-efficient production instillation chamber, including install rotatable element thimble element.
