What do you mean by a meat injection?

Joke: An old lady leads her daughter to see a doctor. The doctor played the girl's mind and said, "Only a meat injection can cure her illness." The daughter asked the old lady for advice. The old lady heard wrong and thought she had six injections. So he said to his daughter, "If you want to get better quickly, don't say that the doctor has six injections, even if the doctor has seven or eight injections, your daughter will suffer."