Endoscope and a method for chemical modification of the members thereof

An endoscope, including:

• an endoscope body, having a lens, an image transmission module and a lighting module, said lens with lens surface being used to capture image, said image transmission module being used to transmit image information acquired by said lens, and said lighting module being used to provide illumination for image capturing of said lens;
• a transparent isolation film accessory, being provided in said endoscope body in a detachability manner, said transparent isolation film accessory having a film offering wheel and a film collection wheel, said film offering wheel may provide a clean transparent isolation film for the lens surface of said lens for said clean transparent isolation film to cover the lens surface of said lens, and further keep pollutants from contact with the lens surface of said lens;
• a hollow outer tube, having a head opening and a tail opening, said tail opening being for said endoscope body to go through to enter an interior space of said hollow outer tube;
• said head opening being externally exposed the transparent isolation film, covering the lens surface of said lens, for said lens to capture images by said transparent isolation film;
• and
• a handle, being arranged at the tail end of said endoscope body, being joined with said hollow outer tube on the tail opening side of said hollow outer tube, an outer wall of said handle having an actuator of said transparent isolation film accessory, to apply a force to drive said film offering wheel to rotate, and provide the aforementioned clean transparent isolation film for the lens surface of said lens, and at the same time, for polluted transparent isolation film on the lens surface of said lens to move forward to said film collection wheel in order to collect said polluted transparent isolation film by said film collection wheel.