Needleless connectors.
D002405:Catheterization, Central Venous / Q000009:adverse effects* / Q000295:instrumentation*; D003428:Cross Infection / Q000209:etiology* / Q000517:prevention & control; D004866:Equipment Contamination; D004867:Equipment Design; D006801:Humans; D009339:Needles / Q000009:adverse effects*