Michael Laudrup condemned referee Mike Dean's "poor and dangerous" decision not to immediately stop play when Michu went down with an apparent head injury during Swansea's 1-0 loss at Tottenham.
The striker collided heavily with Tottenham goalkeeper Hugo Lloris and lay motionless while the home side launched a counter-attack.
Boss Laudrup said: "I was very, very angry with the decision of the referee.
"It is such a poor decision and dangerous as well."
Of the incident - which happened at the end of a game in which Tottenham dominated but struggled to break down a resolute Swansea defence until Jan Vertonghen's classy set-piece conversion 15 minutes from time - Laudrup said the Spanish striker should have received urgent medical attention.
While it was a thunderous collision between Lloris and Michu as the latter tried to get on the end of a bouncing through-ball, the Dane ruled out any foul play on the part of the France goalkeeper.
"I didn't want a penalty or free-kick but when something happens with a possible head injury they just have to blow," said Laudrup.
"I watched it afterwards on the television and when it happened, when Michu is going down to the ground the referee is watching them, the linesman is watching them and still they let the game go on.
"I didn't [speak to the referee after the game]. It will be nice to hear his explanation, and the linesman as well.
"I want referees and linesmen to do exactly the same as players and learn from their mistakes."
After initially being stunned by the coming together, the 26-year-old, who has already scored 12 Premier League goals this season, appeared to make a full recovery.
Full-back Angel Rangel missed the defeat at White Hart Lane after picking up a calf injury during training last week.
And Laudrup said Rangel would not be rushed back for next Sunday's home game against Manchester United ahead of a busy Christmas and New Year schedule for the Swans.
"[Over] the next five or six weeks, we have so many games so I can't risk a player a couple of days too early," Laudrup said.
"If he has a setback he will be out for three or four weeks in January and that could mean seven or eight games."
Tottenham manager Andre Villas-Boas: "It was hard work but the one team who were going to win was us with 23 shots and so much possession. Swansea came out on the counter well and the result was uncertain at 0-0 but we deserved to get the result.
"It was difficult. Michu was defending in his half and it was difficult to break them down. We kept focus and were patient. I'm very happy with the speed we played.
"It was very important. It gets us back to fourth place. The table is tight but it was good to give something back to the fans at White Hart Lane."