Dr. Shiels is a pioneer, helping doctors across the world work better. In the last year alone, his department has developed five new procedures and clinical practices. Dr. Shiels holds the patent on the sole device ma rketed for the non-surgical treatment of Intussusception, a condition that leads to bowel obstruction in infants . This potentially lethal ailment is the most common abdominal pediatric emergency in infants and young children.