| acorn-tipped catheter | A catheter used in ureteropyelography to occlude the ureteral orifice and prevent backflow from the ureter during and following the injection of an opaque medium. (05 Mar 2000) |
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| wax-tipped bougie | A long slender flexible bougie with a wax tip, used for endoscopic passage into the ureter to confirm the presence of a calculus by scratching the surface of the tip with the sharp edges of the stone. (05 Mar 2000) |
| olive-tipped catheter | A ureteral catheter with an olive-shaped tip, used to dilate a constricted ureteral orifice; larger sizes are also used for dilating or calibrating urethral strictures. (05 Mar 2000) |