The present invention describes a device for placement in the thoracic
cavity of a patient. The device is a cannula, tube or catheter for chest
drainage. The device serves as a conduit for drainage of excessive fluid
or air buildup in the chest to a receptacle outside the body. The device
also serves to prevent influx of fluid or air into the chest cavity, thus
preventing pneumothorax or infection. The device incorporates systems for
anchoring the chest drainage cannula to the chest and for steering the
chest drainage cannula into the thoracic cavity.