Lacrimal sac spreader

A lacrimal sac dilator comprises a protective shell, a probe and a distraction part, the protective shell is provided with a sliding cavity, the sliding cavity penetrates through the first end and the second end of the protective shell, the probe is arranged in the sliding cavity in a sliding mode, the distraction part comprises at least two elastic strips, the first end of each elastic strip is connected with the first end of the probe, and the second ends of the elastic strips are connected with each other. And the elastic strips are arc-shaped, are uniformly distributed on the outer side of the central axis of the probe in a radial manner, and movably protrude out of the outer side of the first end of the protective shell. When an operation is carried out, the probe slides, all the elastic strips slide out to the outer side of the first end of the protective shell, all the elastic strips are in an arc shape and are distributed in a radial shape to form a spherical distraction piece structure, all the arc-s