Ultraviolet disinfection of medical device access sites

A device for maintaining disinfection of access sites of medical devices, comprising:

• an enclosure configured to engage an end of a medical device such that an access site of the medical device is positioned within a chamber of the enclosure, the enclosure adjustable between a closed position and an open position, wherein in the closed position the enclosure is configured to enclose the access site within the chamber and wherein in the open position the enclosure is configured to expose the access site;
• an ultraviolet light source within the chamber of the enclosure;
• and
• a controller configured to:
• in response to an adjustment of the enclosure from the open position to the closed position:
• illuminate the ultraviolet light source for a predetermined first duration while the enclosure is maintained in the closed position;
• and
• following illumination of the ultraviolet light source for the first duration, illuminate the ultraviolet light source for a predetermined second duration at predetermined time intervals while the enclosure is maintained in the closed position.