A tear drainage device imitating the physiological mechanism of the tear pump

Abstract

The invention relates to an ophthalmic operative implant, in particular to a permanent lacrimal pump physiological mechanism imitating lacrimal drainage device capable of imitating lacrimal passage dissection and a lacrimal pump physiological mechanism provided for a full lacrimal passage obstruction patient. According to the adopted following technical scheme, the lacrimal pump physiological mechanism imitating lacrimal drainage device is characterized by comprising a lacrimal ductule, a liquid collection tube, a communicating tube and an outlet, wherein one end of the lacrimal ductule is arranged in a vertical upward bending manner; an end part at the other end of the lacrimal ductule is communicated with the liquid collection tube after being upwarped; the upwarped end part of the lacrimal ductule is connected to the middle upper part of the liquid collection tube; the lower end of the liquid collection tube is connected with the communicating tube; the communicating tube is provided with a bent part and an upward vertical part in a bending manner; the upper end of the vertical part is connected with the outlet. By using the scheme, the novel lacrimal pump physiological mechanism imitating lacrimal drainage device for restoring active lacrimal drainage and reducing anatomical physiological structure change is provided for the patients with complex lacrimal passage obstruction.

Description

technical field [0001] The invention relates to an implant for ophthalmic surgery, specifically providing a permanent tear drainage device imitating the anatomy of the lacrimal duct and the physiological mechanism of the tear pump for patients with total lacrimal duct obstruction. Background technique [0002] Lacrimal duct obstructive disease is a common disease in ophthalmology. The clinical manifestations are epiphora and pus, which significantly reduce the quality of life of patients. Along with the raising of people's quality of life requirement, epiphora often cannot be accepted by people. In particular, chronic dacryocystitis is often referred to as a "time bomb" next to the eyeball. Corneal ulcers or endophthalmitis can occur secondary to eyeball injury or intraocular surgery. With the development of medical diagnosis and treatment technology, the success rate of the treatment of lacrimal duct obstructive diseases has increased significantly, but there is still a ce...

AI Technical Summary

Problems solved by technology

However, there are still many disadvantages: 1. At present, the bypass tube surgery discards the original lacrimal duct, changes the normal anatomical structure, and brings changes in appearance or discomfort to patients.

2. Since the place where the bypass tube is implanted is a new surgical wound, granulation hyperplasia often occurs under the stimulation of the bypass tube, which blocks the stoma and makes the operation fail

3. The existing bypass tubes generally adopt the principle of gravity drainage, straight tube design, lack of active drainage function, patients may still have epiphora after surgery, and nasal secretions often enter the conjunctival sac through the tube when sneezing

4. The bypass tube is currently made of glass or metal, with a smooth surface and lack of fixing devices. After surgery, the tube often shifts and falls out, which brings inconvenience to the patient and even fails the operation.

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