noun
fiberscope; fibrescope
A flexible endoscope that uses optical fibers to transmit images, used in medical and industrial inspections.
医師はファイバースコープを使って胃の内部を観察した。
The doctor used a fiberscope to examine the inside of the stomach.
内視鏡 is the general term for endoscope, while ファイバースコープ specifically refers to a flexible endoscope using optical fibers.
Loanword from English 'fiberscope' (or 'fibrescope').