A HUMAN NECESSITIES
A61 MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61B DIAGNOSIS; SURGERY; IDENTIFICATION
A61B1/00 Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
A61B1/00064 Constructional details of the endoscope body
A61B1/00071 Insertion part of the endoscope body
A61B1/0008 characterised by distal tip features
A61B1/00096 Optical elements