ENDOSCOPE APPARATUS

摘要

There is provided an endoscope apparatus which can achieve the improvement of operability with a simple configuration related to the operation of a forceps elevator. The endoscope includes: a forceps elevator which is erectably provided at the distal end part of an operation part that is provided to the insertion part, in an erecting motion range from the minimum angular position to the maximum angular position, and which guides a treatment tool led out from the distal end part; and a locking mechanism which locks the movement of the forceps elevator. An amount of force for locking the movement of the forceps elevator may be varied depending on a direction of that movement and a position of the forceps elevator.

主权项

1. An endoscope apparatus comprising:
an insertion part configured to be inserted into a body; an operation part continuously provided on a proximal end side of the insertion part; a forceps elevator erectably provided to a distal end part of the insertion part; an operation wire whose one end is coupled with the forceps elevator and which is inserted into the insertion part; an erecting operation member which is provided to the operation part, with which another end of the operation wire is coupled, and which is configured to erect the forceps elevator by pulling the operation wire; an operation part body which is provided to the operation part and movably holds the erecting operation member; a first projection provided to any one of the erecting operation member and the operation part body; and a second projection which is provided to another one of the erecting operation member and the operation part body, and includes a first surface that presses the first projection when the forceps elevator is erected and a second surface that presses the first projection when the forceps elevator is reclined, in which a first amount of force when the first projection rides across the first surface and a second amount of force when the first projection rides across the second surface are different.