van Buren sound

van Bur·en sound

(van byūr'ĕn),
a standard sound, available in several calibers, with a gently curved tip designed to follow the contour of the bulbous urethra in the male; used for urethral calibration or dilation.

van Buren,

William H., U.S. surgeon, 1819-1883.
van Buren disease - Synonym(s): Peyronie disease
van Buren sound - a standard sound used for urethral calibration or dilation.