FULLY PORTABLE SEMI-AUTOMATIC MECHANICAL HEART-LUNG SUBSTITUTION SYSTEM AND METHOD

摘要

A fully portable heart-lung substitution system and method comprising a venous cannula (78) adapted for insertion through the vena caval system (82) of the patient and arterial cannula (106), (96) adapted for insertion into the right and left common carotid arteries (110), (100). The venous cannula (78) is attached to a roller pump (26) used to pump blood from the patient's right heart to a membrane oxygenator (44). A pressure sensor (90) attached to the outer wall of the venous cannula (78) automatically controls the roller pump (26) by sensing the patient's blood pressure. Blood flows from the oxygenator (44) to a compliance reservoir (56). Blood pressure is created in the reservoir (59) to serve as the filling pressure for a pulsatile left heart pump (58). Oxygenated blood is filtered (60) as it leaves the left heart pump (58) and is returned to the patient's arterial system via the arterial cannula (106), 112). The entire system is mounted on a portable carrying case (12), (14) for use outside the environment of a hospital facility.