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External dimensions of thoracic vent are 9.5 (length) × 2.5 (width) × 2 cm (height). Thoracic vent comprises flexible urethane catheter with outer diameter of 11-or 13-Fr and length of 10–13 cm and removable in-line trocar connected to 1-way valve. Red-colored diaphragm movement represents pneumothorax drainage according to gradient between intrathoracic and extracorporeal pressures.
