Lacrimal ductule stone removing device and lacrimal ductule stone removing method

Abstract

The invention relates to a lacrimal ductule stone removing device and a lacrimal ductule stone removing method. The lacrimal ductule stone removing device comprises a probe and a guide wire, wherein aprobe cap end connected with an injector is arranged at one end of the probe, the other end of the probe is a closed end, a side hole penetrating through the side wall is formed in the side wall of the probe and close to the closed end, and a mark line is arranged in the position, 12 mm away from the closed end, of the side wall of the probe; and the guide wire comprises an elastic tow as well asa single-strand wire A and a single-strand wire B connected to two ends of the elastic tow respectively, one single-strand wire penetrates through the probe from the probe cap end, is pulled out of the side hole and tensioned and fixed with the other single-strand wire on the side of the probe cap end, so that the elastic tow is tightly closed to the side wall of the probe. The lacrimal ductule stone removing device and the lacrimal ductule stone removing method remove stone in lacrimal ductules by using low-cost medical materials and a simple operation method, consider protection of dacryonand lacrimal ductule structures and functions, and are a device and a technology easy to promote.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a device for removing lacrimal duct stones and a method for removing lacrimal duct stones. Background technique [0002] Canaliculus calculus is an ophthalmic disease. After the formation of calculus, it is not easy to get rid of naturally, and it is easy to accumulate locally, leading to dilation, blockage, inflammation and secondary infection of the lacrimal duct. Because the state, quantity, and range of stones in the lacrimal canaliculus are not easy to determine through physical examination and routine auxiliary examination methods, it is not easy to completely remove them. At present, there are several methods and disadvantages of clearing the lacrimal canalicular stones as follows: [0003] 1. Squeeze the lacrimal canaliculus to expel stones, which can discharge soft, silt-like stones. If it is a large hard stone, it is not easy to discharge, and it is easy to caus...

AI Technical Summary

Problems solved by technology

Because the state, quantity, and range of stones in the lacrimal canaliculus are not easy to determine through physical examination and routine auxiliary examination methods, it is not easy to completely remove them. At present, there are several methods and disadvantages of clearing the lacrimal canalicular stones as follows:

[0003] 1. Squeeze the lacrimal canaliculus to expel stones, which can discharge soft, silt-like stones. If it is a large hard stone, it is not easy to discharge, and it is easy to cause damage to the canaliculus mucosa, and it is easy to cause secondary canaliculus adhesion atresia

Due to the limitations of the operation method itself, it is not clear whether the stones in the canaliculus have been removed, and excessive extrusion will also increase the chance of damage to the canaliculus mucosa

[0004] 2. Lacrimal canaliculus incision and stone removal method can remove stones under direct vision, but because the structure of the lacrimal canaliculus is damaged, it will affect the normal contraction of the lacrimal canaliculus, and it is also prone to stenosis and atresia of the lacrimal canaliculus after surgery. , the function of the punctum is destroyed

The practice of incision combined with catheterization significantly increases the cost of treatment, and the formation of scars after incision suturing is also prone to long-term complications

[0005] 3. Lacrimal duct irrigation can only flush out purulent secretions and debris-like stones, but cannot flush out large stones, and may flush a large number of stones into the lacrimal sac, forming deposits in the lacrimal sac

Repeated douching risks false passages

[0006] 4. Using a curette to enter the lacrimal canaliculus through the lacrimal point to scrape, because it is not operated under direct vision, the location and range of the stones cannot be determined, and the stones in the lacrimal canaliculus cannot be effectively removed

The curette has a larger diameter and is made of hard metal, which will damage the canaliculus mucosa, which may lead to tearing of the puncta and rupture of the canaliculus, and may push large stones into the deep part of the canaliculus and deposit in the lacrimal sac

[0007] 5. The lacrimal endoscope can be used to clean up the stones under direct vision, and can check the actual state of the lacrimal canaliculus, but the lacrimal endoscopy equipment is expensive, the treatment cost is high, and it is difficult to popularize

Endoscopic use of lacrimal trephine, lacrimal laser and other means to crush stones is also easy to damage the lacrimal mucous membrane due to improper operation

And the diameter of the lacrimal duct endoscope probe reaches 1.1mm, there is a certain risk of tearing the puncta

[0008] 6. The lacrimal duct laser and electrolysis can not remove the stones accurately, and may cause serious damage to the lacrimal duct mucosal epithelium

[0009] 7. Drug treatment cannot remove the cause of lacrimal duct stones, but can only reduce inflammation and control infection, as an adjuvant treatment for physical therapy

Images