What is an instrumental delivery and who might need one?

Professor Teo, what is an instrumental delivery and who might need one? So an instrumental delivery aids in the delivery of the baby. There are indications for it ranging from fetal distress, maternal exhaustion, indications where she cannot push the baby. At that time I used a range of instruments starting from a suction cup to metal instruments which are all designed to help the baby deliver with the mother's effort. Obviously one must be very careful in applying these blades or these instruments because we don't want any trauma to the baby or to the mother. With adequate pain relief and the mother's maternal effort, if there is some or she's too tired, that's when I assist her as well, we will deliver the baby as safely as possible.