Abstract
An insertion instrument comprises an insertion section including a distal end portion, a bending portion, and a flexible tube portion. The distal end portion includes an opening, an objective lens, a first conduit, and a second conduit connected to the first conduit, the second conduit extending in a direction other than the longitudinal direction, the second conduit located distally relative to the first conduit. A space between a side surface of the objective lens and a side surface of the opening in the distal end surface defines a third conduit, the third conduit connected to the second conduit.
Full Text
What is claimed is:
An insertion instrument comprises an insertion section including a distal end portion, a bending portion, and a flexible tube portion. The distal end portion includes an opening, an objective lens, a first conduit, and a second conduit connected to the first conduit, the second conduit extending in a direction other than the longitudinal direction, the second conduit located distally relative to the first conduit. A space between a side surface of the objective lens and a side surface of the opening in the distal end surface defines a third conduit, the third conduit connected to the second conduit.
Timeline
Filed
02/25/2026Published
07/02/2026Granted
Not AvailableIPC Codes(2)
A61B 1/00:Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes (examination of body cavities or body tracts using ultrasonic, sonic or infrasonic waves A61B 8/12; endoscopic instruments for taking cell samples or for biopsy A61B 10/04); Illuminating arrangements therefor (for the eyes A61B 3/00)
A61B 1/05:characterised by the image sensor, e.g. camera, being in the distal end portion