Servo-Armature
From Star Trek : Freedom's Wiki
A servo-armature is a cybernetic device that is fitted onto the arms of some Borg drones. The servo-armature of a medical repair drone contains a laser scalpel, biomolecular scanner, and a microsuture integrated into a single instrument.
In 2375, the Doctor was excited at the recovery of a functional medical servo-armature from the debris of a Borg probe destroyed by the USS Voyager. He proclaimed that "no Federation sickbay should be without one." The crew, on the other hand, were less enthusiastic. (VOY: "Dark Frontier")
