Kollmann dilator

Koll·mann di·la·tor

(kahl'mahn),
a metallic expandable instrument used to dilate urethral strictures.

Koll·mann di·la·tor

(kol'mahn dī'lā-tŏr)
A metallic expandable instrument used to dilate urethral strictures.

Kollmann,

Arthur, 19th century German urologist.
Kollmann dilator - a metallic expandable instrument used to dilate urethral strictures.