Liston's cylindrical sound with bone handle
Date
Circa 1880
Description
Liston's cylindrical sound for urethra with bone-clad, drop-shaped handle.
What is referred to this context as sounds are actually urethral probes or dilators; a sound is actually a solid instrument inserted into the bladder to make a noise (or "sound") when it touches a stone, hence confirming the diagnosis of a bladder stone.
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