Kielland's forceps.
D001720:Birth Injuries / Q000453:epidemiology; D005060:Europe; D005113:Extraction, Obstetrical; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007746:Labor Presentation; D007902:Length of Stay; D008428:Maternal Mortality; D009656:North America; D009772:Obstetrical Forceps / Q000266:history; D011183:Postoperative Complications / Q000453:epidemiology; D011247:Pregnancy; D049188:Prenatal Injuries; D014621:Vagina / Q000293:injuries