Not trying to promote this product but it works really well for sucking chest wounds/Open pneumos . Ive used it on a stab wound and a 22 cal to the chest both with great results. Works a lot better than making your own and "burping" the dressing.Anbody else use these or something like it ?
http://firstrespondersupplies.com/acs.htm
http://firstrespondersupplies.com/acs.htm