SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Three types of winged instrument for grasping gallstones out of a patient. These were so designed that the surgeon, once he had hold of the offending object, did not lose grip of it; the bottom one is equipped with a screw mechanism, and a locking plate, A. This picture was published in a book entitled "Of cutting the Stone" by a french surgeon Ambroise Pare (1510-1590).
Model release not required. Property release not required.