Medical equipment stores sell them, and the more functions, the more expensive they are. The cheapest is four or five hundred, and the most expensive is less than two thousand. It's too hard to take care of patients by hand. It's better to use electric ones, but the price is more expensive. It is suggested to look at the nursing bed of small cotton-padded jacket, turn over regularly and lift the back to prevent slipping, which is especially convenient for taking care of patients.