A speculum Latin for "mirror"; plural specula or speculums is a medical tool for investigating body orifices , with a form dependent on the orifice for which it is designed. In old texts, the speculum may also be referred to as a diopter or dioptra. Vaginal and anal specula were used by the ancient Greeks and Romans ,  and speculum artifacts have been found in Pompeii. Marion Sims , consists of a hollow cylinder with a rounded end that is divided into two hinged parts, somewhat like the beak of a duck. The speculum is inserted into the vagina to dilate it for examination of the vagina and cervix.
A NEW TYPE OF RECTAL SPECULUM FOR USE IN EXAMINING AND OPERATING
A NEW TYPE OF RECTAL SPECULUM FOR USE IN EXAMINING AND OPERATING | JAMA | JAMA Network
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This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables. A rectal speculum combining both a direct and a lateral view without removal and reinsertion of the speculum is of advantage both in examining the rectum and in operative work.
A speculum is a duck-bill-shaped device that doctors use to see inside a hollow part of your body and diagnose or treat disease. One common use of the speculum is for vaginal exams. Gynecologists use it to open the walls of the vagina and examine the vagina and cervix. A speculum is made from stainless steel or plastic. Metal devices are reusable.