The 24-year-old Uruguayan international was stretchered off early on in the fifth round clash but Arsenal have not indicated when he might return only saying he faces further specialist reviews.
The Arsenal midfielder, his wife Amine and team-mate Sead Kolasinac were all caught up in the incident on July 25, two weeks before the start of the Premier League season.
CCTV footage showed Kolasinac leaping from the vehicle to confront the knife-wielding raiders while Ozil remained inside the car with his with newlywed wife Amine Gulse, a former Miss Turkey.