Functional features:
■ Cervical examination model: The size of cervical orifice dilatation, the degree of change of cervical orifice and the positional relationship between fetal head and the plane of sciatic spine were established.
Stage 1: The cervical orifice was not dilated, the cervical canal was not lost, and the positional relationship between the fetal head and the plane of the sciatic spines was -5.
Stage 2: The cervical orifice was dilated by 2cm, the cervical canal disappeared by 50%, and the positional relationship between the fetal head and the plane of the sciatic spine was -4.
Stage 3: The cervical orifice was dilated by 4cm, the cervical canal completely disappeared, and the positional relationship between the fetal head and the plane of the sciatic spine was -3.
Stage 4: The cervical orifice was dilated by 5cm, the cervical canal completely disappeared, and the positional relationship between the fetal head and the plane of the sciatic spine was 0.
Stage 5: The cervical orifice was dilated by 7cm, the cervical canal completely disappeared, and the positional relationship between the fetal head and the plane of the sciatic spines was +2.
Stage 6: The cervical orifice was dilated by 10cm, the cervical canal completely disappeared, and the positional relationship between the fetal head and the plane of the sciatic spines was +5.
■ Fetal model:
The skin of a standard fetus is soft, the fontanels are discernable, and cephalic aspiration can be practiced.
Fetal accessories: umbilical cord, placenta.
■ Childbirth model:
The perineum of the model is soft and elastic, and can simulate the midwifery operation in the real state.
Perineum nursing technique can be practiced.
The abdomen was composed of transparent abdominal wall and simulated skin, which was convenient for observing the demonstration of delivery function and the planar positional relationship between the fetal head and the sciatic spines.
■ Perineal suture model:
The episiotomy openings of the model were as follows: median incision, left incision and right incision.
Three types of perineal incision suturing exercises can be performed.