US 11,992,187 B2 · Endoscope

Abstract

An endoscope includes an insertion portion, a distal end rigid member, and a channel tube. The distal end rigid member is provided on a distal end side with respect to the bending portion of the insertion portion, and includes an illumination window, an observation window, and a treatment instrument opening. As the distal end rigid member moves relative to the bending portion in a distal end direction of a longitudinal axial direction, the distal end rigid member can change from a first state in which a distance between a proximal end surface of the distal end rigid member and a distal end surface of the bending portion is fixed to a first distance to a second state in which the distance is equal to a second distance longer than the first distance.

Claims19

Dependent claims

An endoscope comprising:

an insertion portion extending in a longitudinal axis direction, the insertion portion comprising:
a bending portion;
and
a distal end rigid body disposed distally relative to the bending portion, the distal end rigid body comprising an opening;
and
a channel tube extending proximally from the opening along the longitudinal axis direction;
wherein the distal end rigid body is configured to move together with a distal end of the channel tube relative to the bending portion in the longitudinal axis direction;
and
the distal end rigid body is movable between a first position where the distal end rigid body is at least indirectly coupled to the bending portion and a second position where the distal end rigid body separates further from the bending portion relative to the first position.

6 more elements

Dependencies are inferred from the claim text.

Endoscope

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Endoscope

Life of this patent

Abstract

Claims19