Walther dilator

Wal·ther di·la·tor

(vahl'tĕr),
a gently curved hollow metal tube that tapers to a decreased diameter, used to dilate the female urethra.

Wal·ther di·la·tor

(vahl'ter dī'lā-tŏr)
A gently curved, tapered instrument used to dilate the female urethra.

Walther,

Augustine Friedrich, German surgeon and gynecologist, 1688-1746.
Walther catheter
Walther clamp
Walther dilator
Walther forceps
Walther sound
Walther tissue forceps
Walther trocar