The Mexican was challenging Luiz for a header during an Arsenal corner in the fifth minute and the pair collided at full speed.
Players from both sides immediately called for medical staff to enter the pitch at Emirates Stadium as Jimenez and Luiz lay motionless on the pitch.
Both players received medical attention and Luiz was able to get to his feet, before being led off the pitch for more treatment.
The Brazilian had his head bandaged and returned to play, but Jimenez was carried off the pitch on a stretcher. Sky Sports confirmed that the forward had been taken straight to hospital.
The striker required oxygen and the game was stopped for nearly 10 minutes while he received treatment.
Jimenez was applauded off the pitch by his team-mates as he was taken off and replaced by fellow striker Fabio Silva.