In gynaecology, Sims' vaginal speculum is a double-bladed surgical instrument used for examining the vagina and cervix.
It was developed by J. Marion Sims out of pewter spoon,[1] but nowadays it is manufactured out of stainless steel or plastic.
Sims' speculum is inserted into the vagina to retract posterior vaginal wall.
The groove in the middle of Sims' speculum allows free flow of secretions and blood to the outside, thereby keeping the area dry.
The examiner might want to use an anterior wall retractor in addition to Sims' speculum for better visualization of the cervix.