A small, 2-blade Finochietto retractor is a self-retaining surgical instrument primarily used to spread the ribs and other tissues during pediatric or small-animal thoracic and cardiovascular surgery. The size is adapted for smaller anatomies to minimize trauma. 

Correction of congenital defects:

Pediatric surgeons use the small Finochietto retractor to access the chest cavity of infants and perform intricate procedures, such as correcting a tracheoesophageal fistula (a condition where the esophagus is connected to the trachea).

Cardiovascular surgery:

It is used in pediatric cardiac surgeries to provide clear access to the heart and surrounding vessels.

Lung resections:

The retractor helps in accessing and removing diseased portions of the lung in pediatric patients.

Trauma surgery:

It is valuable in emergency procedures involving chest trauma in small children, allowing for fast and controlled access to treat internal injuries.