Aido was Consultant Obstetrician at the Royal Brisbane and Women’s Hospital, Brisbane, Australia and Associate Professor, Department of Obstetrics and Gynaecology, The University of Queensland.

He developed an interest in operative vaginal delivery while working with G C Bird in Papua New Guinea, and subsequently published extensively in this area of obstetric practice. He worked in the UK in the 1970s and conducted the famous Portsmouth vacuum trial that popularised vacuum delivery.

His hallmark legacy is the hand-operated hard plastic device for vacuum-assisted delivery. Also, he has been credited with preventing an estimated 40,000 cases of major permanent maternal trauma in Australia.