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A 19th C Thomson's lithotrite
signed Walter London made from brass and steel. The
instrument was used to trap and crush bladder stones.
This was inserted into the bladder via the urethra and
by adjusting the male central blade with the handle,
the jaws could be moved freely up and down to find and
secure the stone. Once trapped, greater force could be
applied to the stone through the screw mechanism which
was engaged by sliding the spring loaded steel button
on the body of the instrument. |
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