Handle assembly and stapler including the same

A handle assembly for firing a stapler, comprising:

• a first handle component, provided with a slot comprising a first section and a second section connected with each other, in which slidably located a slider, wherein, one end of the slider is provided with a first limiting structure, one end portion of the second section of the slot is provided with a second limiting structure, and a compression spring is located between the first limiting structure and the second limiting structure;
• a second handle, a first end of which is rotatably connected with the first handle component;
• wherein, when the slider is in the first section of the slot, and the first handle component is rotated in a first direction, the slider is not in contact with the second handle, and the second handle is not rotated;
• when the slider is moved to the second section of the slot by external force and the first handle component is rotated in the first direction, the compression spring was deformed, and the slider is in contact with the second handle and actuates the second handle to rotate;
• when the slider is free from the external force, the restoring force of the compression spring actuates the slider to return.