Abstract: An apparatus for treating pneumothorax and pneumohemothorax comprises a one-way valve having a top end and a bottom end and a suction port secured to and extending beyond the top end, a conduit secured to and extending perpendicularly away from the bottom end of the one-way valve in flow communication therewith a 90 degree elbow removably securable to a distal end of the conduit in flow communication therewith and a luer lock lug receptacle secured to the 90 degree elbow and adapted to threadingly receive luer lock lugs on a large bore needle or catheter. The 90 degree elbow is removably securable to the conduit and may be removed and replaced with a connection adapter. The connection adaptor has a first end removably securable to the distal end of the conduit and a second end removably securable to a chest tube surgically inserted in the pleural space. The apparatus may also include an injection port extending from and in flow communication with the conduit.