Chest seals or occlusive dressings Occlusive dressings are used for the rapid treatment of open/penetrating thoracic injuries.
A distinction is made between chest seals with ventilation channels (valves) and without valves. As air collects between the chest and the lungs in a pneumothorax, breathing is severely restricted and can lead to mortality.
Attaching a chest seal prevents further air from entering the pleural cavity. Chest plasters were originally developed for military use and have become increasingly common in police and other security organisations over time. In the meantime, they have also become standard equipment in civil emergency medicine / rescue Services.