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.