Medical endoscopes are used for minimally invasive exploratory or surgical procedures. With the advent of nasal endoscopes, endoscopic dacryocystorhinostomy is becoming popular. IMS repairs flexible and rigid endoscopes and stainless, laparoscopic, power, ophthalmic, and specialty instruments. Unlike many other medical imaging techniques, endoscopes are inserted directly into the organ. Hydrogen peroxide is used to sterilize heat- or temperature-sensitive articles, such as rigid endoscopes. High level disinfection of flexible endoscopes is required by all national guideline issuing bodies. The high level disinfection of endoscopes occurs during a multi-step process called reprocessing. For medical use, similar instruments are called endoscopes. In specific cases, other specialized or ancillary endoscopes may be used for ERCP. Reprocessing endoscopes involves over 100 individuals steps. Fibre bundles were originally developed for use in flexible endoscopes. HpD allowed Lipson to pioneer the use of endoscopes and HpD fluorescence. Pneumatic mechanical devices have been used with endoscopes, commonly for large and hard stones. Previous rigid endoscopes suffered from low light transmittance and poor image quality. Previous rigid endoscopes suffered from very low light transmittance and extremely poor image quality.