INS standards emphasize that needleless connectors should be disinfected before every access using firm mechanical friction and an appropriate antiseptic, with the exact agent and scrub time following the connector’s instructions for use. They also stress choosing connectors with designs that are easier to disinfect and considering the use of disinfection caps as part of a broader infection prevention strategy.
What INS says about disinfection
The INS-linked guidance summarized in the literature says clinicians should disinfect needleless connector surfaces immediately before any connection, infusion, or aspiration, using agents such as 70% alcohol, alcoholic chlorhexidine, povidone-iodine, or iodophors. The disinfection method should include friction, and the access surface that matters most is the septum/top surface and surrounding threads or side surfaces. Manufacturer-specific instructions matter because the needed scrub time can vary by connector design.
Practical standards
INS-aligned recommendations also note that passive alcohol disinfecting caps or port protectors may be used for continuous hub disinfection, but they do not replace proper frictional wiping between access events. Facilities should train staff on the exact connector in use, because different connectors may have different access-surface designs, internal mechanisms, and effective disinfection times. The goal is to reduce contamination risk from the connector, which is a major source of post-insertion catheter infection risk.
Device design matters
Needleless connectors with smooth, flat, solid access surfaces and no gaps or grooves are easier to disinfect effectively than more complex designs. Clearer housings and simpler internal pathways also help staff see residual blood or fluid and flush the device properly. In other words, INS guidance is not just about how to scrub, but also about choosing a connector that can be scrubbed reliably.
Evidence on scrub time
Research has shown that short scrub times may be inadequate for some connectors, and effectiveness depends on the specific device. That is why INS-style practice is to follow the connector’s validated instructions rather than rely on a one-size-fits-all number. A common theme across the evidence is: scrub with friction, use the right antiseptic, and do it every time, and support compliance with tools such as disinfection caps when appropriate.
Using disinfection caps to support hub protection
Disinfection caps are increasingly used to support continuous hub disinfection between access events. These caps typically contain alcohol and help reduce contamination on the connector surface while also serving as a visual indicator that the hub has been protected. INS-aligned recommendations recognize that disinfection caps can be a valuable addition to infection prevention protocols, especially in environments with frequent line access. However, facilities should still follow manufacturer instructions and ensure proper connector disinfection practices are maintained according to institutional policy.
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References
Nickel, B. et al., (2024, January/ February) Infusion Therapy Standards of Practice 9th edition. Journal of Infusion Nursing. https://www.ins1.org/publications/infusion-therapy-standards-of-practice/
Moureau, N. et al., (2015, May) Disinfection of Needleless Connector Hubs: Clinical Evidence Systematic Review. National Library of Medicine. https://pmc.ncbi.nlm.nih.gov/articles/PMC4446481/
Jarvis, W. (2013, December 9) Needleless Connectors and the Improvement of Patient and Healthcare Professional Safety. Infection Control Today. https://www.infectioncontroltoday.com/view/needleless-connectors-and-improvement-patient-and-healthcare