There is a Flexible Nephroscope offered by us that is thinner than the rigid version (1821 Charr) and has a curved working channel with smaller diameter. Because of this it is recommended to insert a smaller laser fiber. Nephroscopy is a minimally invasive way to examine your kidneys and remove kidney stones, kidney cysts or other blockages. It is an endoscope used for inspecting and passing instruments into the interior of the kidney. The Flexible Nephroscope is made for medical uses.