Simpson uterine sound
Simp·son u·ter·ine sound(simp'sŏn),
a slender flexible metal rod used to calibrate or dilate the cervical canal, or to hold the uterus in various positions during gynecologic surgery.
Simpson,Sir James Y., Scottish obstetrician, 1811-1870.
Simpson forceps - obstetrical forceps.
Simpson uterine sound - a slender flexible metal rod.