Already down to 10 men after Thibaut Courtois’ red card, the Chelsea physios ran on to the pitch to treat Eden Hazard, despite the Belgian seemingly not badly injured.
It meant they had to play with only nine players for a short period, and the Portuguese wasn’t impressed.
“I was unhappy with my medical staff. They were impulsive and naive,” Mourinho told Sky Sports.
“Whether you are a kit man, doctor or secretary on the bench you have to understand the game.
“You have to know you have one player less and to assist a player you must be sure he has a serious problem. I was sure Eden did not have a serious problem. He had a knock. He was tired.”
On an eventful afternoon at the Bridge, Swansea twice came from behind to take a valuable point back to South Wales.
Andre Ayew cancelled out Oscar’s opener, before a deflected Willian cross put the Blues back ahead.
Courtois was dismissed after the break for bringing down Bafetimbi Gomis, and the striker converted from the spot past Asmir Begovic to make it 2-2, which is how it stayed.
Unwilling to land himself in hot water with the authorities already, Mourinho refused to offer an opinion on the incident.
“It’s the first game of the season and I don’t want to start now,” he said. “I’m not going to talk about the penalty, I’m not going to talk about the red card. I don’t comment.
“It’s just because the first time I can control myself. I want to react this way so you don’t say it was in Day One. Yes, it was in Day One that we were punished, but it was not in Day One that I opened my mouth!”