median bar of Mercier

me·di·an bar of Mer·ci·er

(mār-se'ā),
a prominent band of fibromuscular tissue involving the interureteric ridge or neck of the urinary bladder, occasionally resulting in urinary obstruction.

median bar of Mercier

(1) Interureteric fold; plica interureterica [NA6]. 
(2) Median bar, see there.

Mercier,

Louis Auguste, French urologist, 1811-1882.
median bar of Mercier - Synonym(s): Mercier bar
Mercier bar - a fold of mucous membrane extending from the orifice of the ureter of one side to that of the other side. Synonym(s): interureteric fold; median bar of Mercier
Mercier catheter
Mercier sound - a catheter the beak of which is short and bent almost at a right angle.
Mercier valve - an occasional fold of mucosa of the bladder partially occluding the ureteral orifice.