Important Medical Leaps By herby58 Jan 1, 1816 Rene Laennec - STETHOSCOPE Jan 1, 1842 Crawford W. Long - FIRST ANESTHETIC USED IN SURGERY Jan 1, 1849 Elizabeth Blackwell - FIRST WOMAN WITH A MEDICAL DEGREE Jan 1, 1870 Louis Pasteaur & Robert Koch - THEORY OF DISEASE Jan 1, 1895 Wilhem Conrad Rontgen - FIRST XRAY DEVELOPED Jan 1, 1899 Felix Hoffman - ASPRIN Jan 1, 1901 Karl Landsteiner - DISCOVERS DIFFERENT BLOOD TYPES Jan 1, 1907 Karl Landsteiner - FIRST SUCCESSFUL BLOOD TRANSFUSION Jan 1, 1921 Edward Mellanby - VITAMIN D Without it, a person will expierience rickets. Jan 1, 1928 Sir Alexander Fleming - Penicillin Jan 1, 1937 Bernard Fantus - FIRST BLOOD BANK Jan 1, 1943 Selman A. Waksman - STREPTOMYCIN the antibiotic that cures tuberculosis Jan 1, 1943 Alfred G. Gilman & Louis S. Goodman - CHEMOTHERAPY Jan 1, 1952 Paul Zoll - PACEMAKER Jan 1, 1955 Jonas Salk - FIRST POLIO VACCINE Jan 1, 1963 Thomas Fogarty - FIRST BALLOON CATHETER Jan 1, 1967 Christian Barnard - FIRST HUMAN HEART TRANSPLANT Jan 1, 1972 Dean Kamen - INSULIN PUMP Jan 1, 1975 Robert S. Ledley - FIRST CAT SCAN Jan 1, 1980 Raymand Damadian - FIRST MRI DEVELOPED