(Images courtesy of Dr. Miguel Morales Garcia . Hospital Rey Juan Carlos . Móstoles. Madrid. Spain.)
The thoracic vent is a minimally invasive device for the treatment of spontaneous and iatrogenic pneumothorax. It consists of a catheter connected to a plastic chamber containing a one-way valve designed to maximize air exit and eliminate the possibility ofits reentry. There is no need to connect the thoracic vent to an underwater seal device.
Link to picture: