The invention discloses an
intrauterine device for rats, a placer for the
intrauterine device and a manufacturing method for noninvasive type contraceptive rat models with the
intrauterine device. The intrauterine device comprises a
copper wire part, wherein the front end of the
copper wire part is connected with a wire ring made of silk threads; and the rear end of the
copper wire part is connected with a traction silk thread. The placer comprises a push core, wherein a fork head is arranged at the head end of the push core; a
handle is arranged at the
tail end of the push core; the fork head is formed by separating head ends of two fork legs and connecting
tail ends of the two fork legs; the head end of each fork leg has a needle point shape; the inner
diameter of a rigid outer casing is greater than the width of the widest part formed by separating the two fork legs and the outer
diameter of the push core; and the length of the rigid outer casing is smaller than that of the push core. According to the preparation method for the rat models, the intrauterine device for the rats and the placer for the intrauterine device are adopted, so that the rats are not required to receive an
open surgery, the intrauterine device is placed through the way of
cervix-intrauterine, the contraceptive rat models with intrauterine device, which is in accordance with the clinical contraceptive method through the intrauterine device, are prepared; and the manufacturing method is easy and convenient to operate, the risk is low, and the efficiency is high.