Internal drainage expanding device for viscoelastic tubule

Abstract

The invention discloses an internal drainage expanding device fro a viscoelastic tubule. The internal drainage expanding device comprises an aqueous fluid internal drainage tube and a viscoelastic tubule expanding tube; the outer wall of the viscoelastic tubule is wrapped by a thin film layer, the section of the viscoelastic tubule is in an open circular ring shape, the thin film layer is made from biodegradable materials, the viscoelastic tubule expanding tube has tension ans can be expanded to keep the section in a C type after the thin film layer is degraded, and fluid permeation holes areformed in the tube wall of the viscoelastic tubule expanding tube; one end of the aqueous fluid internal drainage tube can be arranged in the viscoelastic tubule expanding tube. By the adoption of internal drainage, the internal drainage expanding device avoids postoperative complications, filtering bleb scarring and other problems caused by an external drainage operation; the internal drainage mode has small injury to the normal physiological structure of eyeballs, can keep stable during eyeball tension fluctuations after an operation, and reserves the maximum space for other operations for patients in the future.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a drainage dilation device for viscous tubules. Background technique [0002] Glaucoma is an eye disease in which the intraocular pressure is intermittently or continuously elevated. Sustained high intraocular pressure can cause damage to various parts of the eyeball and visual function. If not treated in time, the retinal nerve fiber layer of the patient will continue to die, and at the same time, the visual field can be completely lost and even blind. Glaucoma is one of the three major blinding diseases that cause blindness in humans. The incidence rate of the total population is 1%, and it increases with age. The intraocular pressure of normal people is 10-21mmHg, and it is a pathological phenomenon if it exceeds 24mmHg. The longer the elevated intraocular pressure lasts, the more serious the damage to visual function will be. The tubules and the trabecular mesh...

AI Technical Summary

Problems solved by technology

[0003] At present, the principle of trabeculectomy, which is the most widely used clinically, is to realize the external drainage of aqueous humor through artificial fistula, thereby reducing intraocular pressure; but this operation method does not conform to the normal physiological state of the human body, and postoperative High chances of various types of complications, such as large intraocular pressure fluctuations, concurrent cataracts, and scarring of postoperative filtering blebs leading to surgical failure, etc.

Images