Adjustable glaucoma drainage tube

Abstract

The invention provides an adjustable glaucoma drainage tube.The adjustable glaucoma drainage tube comprises a hollow wide rubber tube arranged close to the equator portion of an eyeball, a movable inner core and a thin drainage tube body.Inner tubes with the same length are arranged in the hollow wide rubber tube in the length direction of the hollow wide rubber tube.Several micropores perpendicular to the inner tubes are formed in the wall of the hollow wide rubber tube to make the inner tubes communicate with the outer portion of the hollow wide rubber tube.The tail end of the thin drainage tube body is communicated with the inner tubes of the hollow wide rubber tube, and the front end of the thin drainage tube body is inserted in an anterior chamber.The front end of the movable inner core swells to prevent aqueous fluid from continuing to be drained to the far ends of the inner tubes of the hollow wide rubber tube.After an operation, the length of a cavity in the front end of the hollow wide rubber tube is adjusted by adjusting the position of the movable inner core, and then the aqueous fluid drainage volume is adjusted; the movable inner core is pulled out to increase the volume of the aqueous fluid drained into inner cavities of the hollow wide rubber tube, and the intraocular pressure of orbital tissue is reduced; when the movable inner core is pushed to the near end, the volume of the aqueous fluid drained into the inner cavities of the inner tubes is reduced, and then the intraocular pressure is increased.According to the device, the aqueous fluid drainage volume can be adjusted according to clinical needs after the operation, half quantitative adjustment can be carried out, and therefore the purpose of adjusting the intraocular pressure is achieved.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to an adjustable glaucoma drainage tube. Background technique [0002] Glaucoma is a common and difficult eye disease with intermittent or continuous elevation of intraocular pressure. The onset of the disease is rapid, harmful, and can cause blindness at any time. Sustained high intraocular pressure can cause damage to various parts of the eyeball and visual function, leading to optic atrophy, narrowed field of vision, and decreased vision. Blindness is only a matter of time. Complete blindness can occur within 24-48 hours of the acute attack. If left untreated, vision can be completely lost and even blind. Glaucoma is one of the three major blindness diseases that cause blindness in humans, with an incidence rate of 1% in the general population and 2% after the age of 45. Currently, ophthalmologists often use glaucoma drains to control IOP in glaucoma patients, especially when...

AI Technical Summary

Problems solved by technology

The pressure control with simple pressure control valve inside is extremely inaccurate and prone to failure

The current drainage tube or drainage valve cannot be adjusted later according to the needs after the operation, and often can only be replaced after failure

In addition, the target intraocular pressure of different stages of glaucoma is different, and the existing simple pressure control valve cannot set the target intraocular pressure before operation or adjust it after operation, which makes the condition of some patients continue to aggravate after surgery

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