Show Human cross circulation permitting a second persons person's heart and lungs to pump the blood of a person under surgery surgery surgery sur sur- gery was developed by an American surgeon C. C Walton Lillehei in 1954 reports World Book Encyclopedia A mechanical heart and blood purifier was used successfully successfully suc sue for the first time in 1953 by John H. H Gibbon an American surgeon according ae to World Book Encyclopedia The stethoscope was invented invent invent- ed cd by a French physician Rene T. T H. H Laennec in 1816 reports World Book |