Control element for endoscope, self-locking device, handle, and endoscope

A control element for an endoscope, comprising a mounting base and an elastic member, wherein the mounting base is provided with an avoidance area;

• the avoidance area is a hole or groove penetrating through the mounting base;
• the elastic member is disposed corresponding to the avoidance area;
• a first end of the elastic member is connected to the mounting base, and a second end of the elastic member is a free end;
• a projection of the elastic member on a plane where the mounting base is located covers a part of the avoidance area;
• the elastic member is provided with a first protrusion;
• the elastic member comprises a first section, a second section and a third section;
• the second section serves as the free end;
• a first end of the second section is connected to the mounting base via the first section, and a second end of the second section is connected to the mounting base via the third section;
• and the elastic member has a U-shaped structure, wherein the first protrusion comprises a first inclined surface and a second inclined surface;
• the second inclined surface has a greater slope than the first inclined surface;
• and the second inclined surface is located between the first inclined surface and the first section.