A medium two-bladed Finochietto retractor is a self-retaining surgical instrument primarily used in thoracic procedures to spread the ribs and access organs in the chest cavity. The medium size is a versatile option for many adult patients undergoing cardiothoracic or trauma surgeries. 

A two-bladed Finochietto retractor is a type of rib spreader, a critical tool for open-chest surgery. Its uses include:

Thoracotomy:

The primary use is to open the chest wall, providing a wide, unobstructed view of the surgical site.

Cardiovascular surgery:

It is used for operations on the heart, such as coronary artery bypass grafting or heart valve replacement.

Lung surgery:

The retractor allows access for procedures like lung resections to remove a diseased portion of a lung.