Sirinji sefa kamudziyo kadiki, kanoraswa kanowanzo shandiswa mumarabhoritari kusefa kana kujekesa zvinwiwa. Yakagadzirirwa kusungirirwa kumagumo esirinji uye inoita sechivharo chinobvisa zvidimbu uye zvakasvibiswa kubva mumvura sezvazvinomanikidzwa kuburikidza nesefa.
Sirinji mafirita anowanzo sanganisira imba yepurasitiki ine membrane sefa mukati. Imba iyi ine chikadzi luer lock kana luer slip yekubatanidza inobvumira kuti isungirwe zvakachengetedzeka kune sirinji. Iyo membrane sefa, inova chinhu chakakosha, inogadzirwa neine porous zvinhu inobvumira iyo fluid kuti ipfuure nekuchengeta zvidimbu uye zvinosvibisa pamusoro pehumwe saizi.
