Glaucoma drainage device

Abstract

The invention relates to a glaucoma drainage device, which consists of a drainage pipe (a pipe for short) and a drainage sheet (a membrane sheet for short), wherein the pipe and the membrane sheet can be simultaneously or singly used, the pipe has the length of 0-15mm, the inner diameter of 1-1500[mu]m, and the outer diameter of 3-3000[mu]m, the membrane sheet has the thickness of 0-3mm, and the area of 0-500mm<2>, the aqueous water can smoothly flow in the inner side surface of the membrane sheet, the inner side surface of the membrane sheet is provided with 0-N dot-shaped or line-shaped grooves, and the depth and the width of each groove are respectively 0-5mm; the drainage sheet is in a shape of semicircle, ellipse, sector and triangle. As the equipment adopts the material, such as silica rubber, the easiness in direct pricking into the anterior chamber of eyes is avoided, a metal chip is assisted by the applicable shape of the silica rubber, and the metal chip is provided with a handle to assist the soft material (such as silica rubber) in pricking into the anterior chamber of eyes. The glaucoma drainage device has the advantages that the material of equipment adopts medical silica rubber, hydrogel or other metallic human body implantable materials; the size of equipment is small, the appearance design conforms to the anatomy principle of human eyes, and the device is suitable for being arranged in any position of conjunctival sac for a long time.

Description

technical field [0001] This patent relates to a device for external drainage of glaucoma. Background technique [0002] At present, there are two commonly used methods for glaucoma drainage surgery: trabeculectomy and silicone valve drainage, both of which have insurmountable defects: the trabeculectomy: the filtering mouth will heal after a long time The second is silicone valve drainage: the drainage tube on the silicone valve is too long (the length of the tube is generally 15-20 mm), which is easy to be exposed or blocked, and the silicone valve is too large, so it needs to be placed near the equator of the eyeball. The places that can be placed in the conjunctival sac are limited, and the operation failure rate is high. Once the drainage fails, there is almost no chance of reoperation. In addition, the operation is complicated and not easy to popularize. [0003] This patented device overcomes the defects of the above-mentioned two types of glaucoma drainage surgery in...

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Problems solved by technology

[0002] At present, there are two commonly used methods for glaucoma drainage: trabeculectomy and silicone valve drainage, both of which have insurmountable defects: one Trabeculectomy: the drainage of aqueous humor will fail due to the healing of the filter opening after a long time; the second silicone valve drainage: the drainage tube on the silicone valve is too long (the length of the tube is generally 15-20 mm) is easy to be exposed or blocked , and the size of the silicone valve is too large, it needs to be placed near the equator of the eyeball, the place that can be placed in the conjunctival sac is limited, the operation failure rate is high, and once the drainage fails, there is almost no chance of reoperation.

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