Catheter with semipermeable membrane for treatment of severe pulmonary emboli

A catheter system for endovascular procedures comprising a primary catheter for accessing the vascular system from outside the patient, said primary catheter having a plurality of lumen extending from the proximal end through the distal end, an occlusive balloon attached to said primary catheter near said distal end for occluding a vein, one of said plurality of lumen in said primary catheter connected to the interior of said balloon for inflation thereof, a semipermeable membrane surrounding said primary catheter, said membrane forming a pouch having an open interior, said membrane connected to said primary catheter intermediate said balloon and said proximal end, one of said plurality of lumen in said primary catheter adapted to supply oxygen to said interior of said pouch, said semipermeable membrane adapted to pass minute quantities of oxygen to the vascular system, said primary catheter including a pulmonary lumen, said pulmonary lumen extending from said proximal end to an opening in said primary catheter near said proximal end proximal to said membrane, a multi-lumen pulmonary catheter slidably extends through said pulmonary lumen adapted to extend into the pulmonary artery to transport chemical and mechanical agents, at least one of said plurality of lumen terminating in an opening in said primary catheter distal to said balloon, a third multi-lumen catheter slidably extending through said opening in said primary catheter said third catheter adapted to extend into the venous tree to transport chemical and mechanical agents to clots therein whereby venous blood can be oxygenated superior to an embolism.