Stopcock ea khatello e phahameng ea bongaka ke sesebelisoa se sebelisoang litsing tsa tlhokomelo ea bophelo ho laola phallo ea metsi kapa likhase.E etselitsoe ho hokahanya mela e meraro e fapaneng kapa li-tubes le ho lumella ho kheloha kapa ho kopana ha phallo ena.Stopcock hangata e na le 'mele o bohareng o nang le likou tse tharo kapa menyetla, e' ngoe le e 'ngoe e na le valve kapa lever.Ka ho fetola li-valve, bafani ba tlhokomelo ea bophelo ba ka laola ho phalla ha metsi kapa likhase ka setopong.Sesebelisoa sena se atisa ho sebelisoa maemong a bongaka moo mela e mengata e lokelang ho hokahanngoa kapa ho laoloa, joalo ka nakong ea ts'ebetso e itseng ea ho buuoa, li-catheterizations tsa arterial kapa venous, kapa liphaposing tsa batho ba kulang haholo.E lumella litsebi tsa tlhokomelo ea bophelo ho laola tataiso le tekanyo ea infusion, aspiration, kapa sampling, ho itšetlehile ka litlhoko tse khethehileng tsa mokuli.Tlhahiso e phahameng ea khatello ea maikutlo e bontša hore setopo se etselitsoe ho mamella maemo a phahameng a khatello, ho netefatsa ts'ebetso e sireletsehileng le e ka tšeptjoang esita le. maemong ao ho nang le khatello e matla.Ka kakaretso, khatello e phahameng ea meriana ea litsela tse tharo ke sesebelisoa sa bohlokoa se thusang bafani ba tlhokomelo ea bophelo ka katleho le ho laola phallo ea mokelikeli kapa khase mekhoeng ea bongaka, ho khothalletsa tšireletseho ea mokuli le ho fana ka tlhokomelo e nepahetseng.
