Endoscopic device

1 . An endoscopic device comprising:

a longitudinal member which has a lumen provided to extend along a longitudinal axis; and

a bending portion which is formed on a distal end side of the longitudinal member and has a restoring force that restores the bending portion to a bent shape,

wherein the bending portion has an opening portion, which opens to communicate with the lumen, in an inside surface of a bend in the bent shape restored by the restoring force, and

wherein a pressing surface faces the opening portion in order to press a tissue using an outside surface of the bend in the bent shape restored by the restoring force and is provided in the outside surface of the bend.

2 . The endoscopic device according to claim 1 ,

wherein a suction portion that suctions a liquid through the lumen, and a connection port which is capable of being attached or removed to a suction portion that suctions a liquid through the lumen is attached to a proximal end side of the longitudinal member.

3 . The endoscopic device according to claim 1 ,

wherein a connection port that is tubular shape and communicates with the lumen and a suction portion that is connected to the connection port and suctions a liquid through the lumen are provided on a proximal end side of the longitudinal member.

4 . The endoscopic device according to claim 1 ,

wherein the pressing surface presses the tissue by the restoring force.

5 . The endoscopic device according to claim 2 ,

wherein the longitudinal member has openings at the distal end and the proximal ends, respectively,

wherein the proximal end of the longitudinal member is provided with an operating portion formed with a passage for inserting a stylet into the longitudinal member, and

wherein the connection port branches from the passage and opens to an external surface of the operating portion.

6 . The endoscopic device according to claim 1 ,

wherein the bending portion is spirally formed.

7 . The endoscopic device according to claim 1 ,

wherein the bending portion is provided on the distal end side of the longitudinal member, and

wherein the longitudinal member is provided with a curved portion formed such that a central axis of the longitudinal member is curved closer to the proximal end side than the bending portion.

8 . The endoscopic device according to claim 1 ,

wherein the longitudinal member has flexibility and is insertable through a channel of an endoscope.

9 . The endoscopic device according to claim 6 ,

wherein the bending portion is provided on the distal end side of the longitudinal member and is formed in a conical coil shape.

10 . The endoscopic device according to claim 9 ,

wherein a positional relationship between a central axis of the longitudinal member closer to the proximal end side than the bending portion and a centerline of the bending portion is an intersecting or twisted position.

11 . The endoscopic device according to claim 10 ,

wherein a balloon is provided on at least one of the proximal end side of the bending portion and the distal end side of the bending portion,

wherein the longitudinal member is inserted into a digestive tract, and

wherein the balloon inflates larger than the internal diameter of the lumen tissue by supplying a fluid thereinto.

12 . The endoscopic device according to claim 1 ,

wherein a plurality of opening portions are provided, and

wherein all the plurality of opening portions are directed to the inner side in the state where the bending portion is unloaded.

13 . The endoscopic device according to claim 3 ,

wherein the longitudinal member has openings at the distal end and the proximal ends, respectively,

wherein the proximal end of the longitudinal member is provided with an operating portion formed with a passage for inserting a stylet into the longitudinal member, and

wherein the connection port branches from the passage and opens to an external surface of the operating portion.