A field surgeon ring was a ring worn by medics. One of these rings was given on Tatooine after the Battle of Yavin to a medic by Administrator Nillika of the Mos Eisley Medical Center for helping treat beings that were injured in a firefight between between Lady Valarian's guards and Jabba the Hutt's thugs in Mos Eisley.
The Field Surgeon Ring is an item in the 2003 video game Star Wars Galaxies, a massively multiplayer online roleplaying game developed by Sony Online Entertainment and published by LucasArts, prior to its closure on December 15, 2011. The Field Surgeon Ring was added to the game upon the release of the "Publish 25," a.k.a. the "New Game Enhancements," on November 15, 2005. It was a reward for the quest "Caught in the Crossfire" for players of the Medic profession. The ring slightly enhanced the player's constitution when worn.