Minimally invasive lacrimal dilator

Abstract

The invention discloses a minimally invasive lacrimal dilator. The minimally invasive lacrimal dilator comprises a conical head end, a dilating cone and a lacrimal point sleeve, wherein the dilating cone is provided with a large head end and a small head end along the axis of the dilating cone, and the conical head end is arranged at the small head end of the dilating cone; the large head end of the dilating cone is connected with a lacrimal point sleeve inner cylindrical section, and the lacrimal point sleeve inner cylindrical section is connected with a holding part; the lacrimal point sleeve comprises a lacrimal point sleeve wall and a lacrimal point sleeve adapting surface; the lacrimal point sleeve wall is connected to the lacrimal point sleeve inner cylindrical section in a sleevingmanner; and the lacrimal point sleeve wall is provided with the lacrimal point sleeve adapting surface at the end close to the dilating cone. Through the mode, the lacrimal point sleeve is supported in place after lacrimal point dilating, the stability is high, the frictional resistance caused by lacrimal point contraction is avoided, and a lacrimal probe is convenient to enter and exit without resistance, so that the resistance position is clear during lacrimal probing, and the blocking position is easy to judge. Meanwhile, lacrimal point dilating is completed in one step as required, no extra damage is caused to the lacrimal point, and tissue damage is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a minimally invasive lacrimal point dilator. Background technique [0002] At present, the inspection and treatment methods of lacrimal duct obstruction include: lacrimal duct flushing, lacrimal duct probing, etc. Probing of the lacrimal duct generally requires dilation of the lacrimal punctum first. The current tip of the punctal dilator is a cone with a diameter of 3-4mm. When performing punctal dilation, the doctor does not know when the dilation is in place. It can only be judged according to the doctor’s experience. There are often two situations: [0003] 1. Insufficient expansion, repeated expansion is required, repeated actions and operational friction increase tissue damage. [0004] 2. Excessive expansion, leading to lacrimal puncta damage or even punctal cracking, affecting tear drainage function. [0005] The size of the punctum is 0.2-0.3mm, and it can be ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem mainly solved by the present invention is to provide a minimally invasive punctum dilator, which can solve the problem that the size of the puncta can not be controlled according to the needs, so that the punctum can be expanded in one step as needed, and the puncta can be damaged to the minimum extent to reduce tissue damage.

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