Indwelling type artificial lacrimal ductule

Abstract

The invention discloses an artificial lacrimal canaliculus which can be placed in the lacrimal canaliculus. It is characterized in that: both ends are smooth blind ends, and there is a quadrangular umbrella-shaped structure near the blind ends. The umbrella-shaped structure has certain toughness and good strength. Elastic, leaving a round hole with a diameter of about 0.3mm in the middle, which is convenient for implantation and removal after treatment. As a material for ophthalmic surgery, the invention can continuously and effectively expand the puncta and canaliculus, has simple structure, low cost and convenient operation, and provides conditions for clinical treatment of puncta and canaliculus stenosis or occlusion.

Description

technical field [0001] The invention relates to an artificial lacrimal canaliculus which can be placed in the lacrimal canaliculus, and belongs to the technical field of medical instruments. Background technique [0002] At present, many patients in the Department of Ophthalmology are troubled by tears. Clinical analysis shows that the lacrimal puncta are narrowed or blocked, and the main reason is the narrowing or blocking of the lacrimal canaliculus and the common lacrimal duct. In clinical work, the traditional methods of lacrimal puncta expansion, lacrimal duct flushing or lacrimal duct probing are generally used, but because of the elastic retraction of the patient's puncta and lacrimal canaliculus, the original stenosis or obstruction state is quickly restored, even if the patient After multiple treatments, the effect is still not good, and the risk of puncta laceration and canaliculus false channel formation is significantly increased. "Chinese Minkang Medicine" 20...

AI Technical Summary

Problems solved by technology

In clinical work, the traditional methods of lacrimal puncta expansion, lacrimal duct flushing or lacrimal duct probing are generally used, but because of the elastic retraction of the patient's puncta and lacrimal canaliculus, the original stenosis or obstruction state is quickly restored, even if the patient After repeated treatments, the effect is still not good, and the risk of puncta laceration and formation of lacrimal canaliculus false channel is significantly increased

"Chinese Minkang Medicine" 2015 Year 27 volume 56-57 The page "Clinical Observation of Patients with Lacrimal Punctal Stenosis or Occlusion Treated with Disposable Lacrimal Duct Recanalization Tube" mentioned in detail that the success rate of this type of operation is low and there are many complications

Another part of the patients adopt nasolacrimal duct surgery, "International Journal of Ophthalmology" 2010 Year 10 volume 187-188 Page "Circular Silicone Tubing Combined with Mitomycin C The success rate of this operation is only 72.4% , the application of mitomycin will increase the success rate, but it will cause obvious local trauma to the patient, and the operation is complicated, and the patient will suffer a lot. After the operation, the extracorporeal tube or the intranasal tube will bring a lot of inconvenience to the life of the patient.

Images