Assembling type lacrimal passage expansion support

Abstract

The invention relates to an assembling type lacrimal passage expansion support. The lacrimal passage support comprises a thin-wall hollow foldable hose, a memory titanium guide wire, a wax impregnated2-0 suture, a water control holder and a flat-end injection needle; the wax impregnated 2-0 suture is tied to the middle section of the thin-wall hollow foldable hose in a slipknot mode; the flat-endinjection needle is cooperatively used at one end of the thin-wall hollow foldable hose; the memory titanium guide wire penetrates through the thin-wall hollow foldable hose. The support has the advantages that according to the sizes of lacrimal sacs and lacrimal passages, memory titanium guide wires with different elasticities are individually selected to be combined with the thin-wall hollow foldable hose; by means of resilience of the guide wire, the support is stabilized, and falling off is prevented; meanwhile, by cooperating with the water control holder on the head of a silicone hose and making the hose filled with water through the flat-end injection needle, the functions of expanding the lacrimal passages, improving blockage, moving nasolacrimal ducts and exercising lacrimal passage sphincter muscles are achieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a set of assembled lacrimal duct expansion stents. Background technique [0002] The lacrimal duct includes the upper and lower lacrimal puncta, the upper and lower canaliculus, the common lacrimal duct, the lacrimal sac and the nasolacrimal duct. Its main function is to drain tears into the nasal cavity. The obstruction of any part of the lacrimal duct is called lacrimal duct obstruction. Lacrimal duct obstruction diseases (LDOD) are common lacrimal diseases in ophthalmology. Adult lacrimal duct obstruction diseases are more common in adult women and middle-aged and elderly people. Causes include inflammation, trauma, and stones in the lacrimal duct, which are more likely to form dacryocystitis. The main clinical manifestation is epiphora, flushing and erosion of the skin in the lacrimal sac. Quality has serious consequences. There are various treatment methods, among ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kinds of lacrimal duct stent tubes, and the commonly used silicone indwelling tubes have many shortcomings: 1. The diameter of the stent is fixed, which cannot adapt to the size of the lacrimal duct and lacrimal sac of all patients, and some patients are easy to fall off after the tube is placed; 2. Long-term indwelling tubes may cause tears 3. Long-term placement of traditional stents can easily cause chronic inflammatory reactions, and the recurrence rate after extubation is high

[0009] The lacrimal duct stent in the above-mentioned patent document is that the diameter of the nasolacrimal duct body is larger than that of the lacrimal duct body, which cannot shrink and dilate the lacrimal duct, and the stent is prone to adhesion with the tissue

[0010] In summary, there is a need for a lacrimal duct expansion stent that adapts to the size of the lacrimal duct and lacrimal sac in all patients, prevents it from falling off, can expand the nasolacrimal duct, improve the blockage, move the nasolacrimal duct, and exercise the function of the lacrimal sphincter. And about this lacrimal duct expansion stent, there is no report yet

Images