| 摘要 |
A bioinert implantable shunt device useful for controlling internal pressure includes a valve apparatus, a means for attaching the valve apparatus and an inlet tube. The valve apparatus includes an inlet port, an outlet port, a flexible tube connected therebetween and a pressurized enclosure. The flexible tube is positioned inside the pressurized enclosure whereby fluid flow from the inlet port to the outlet port is dependent on a differential pressure between a pressure in the flexible tube and a pressure outside the flexible tube in the pressurized enclosure. The inlet tube is connected to the inlet port of the valve apparatus. The pressurized enclosure may include a housing and a semi-permeable membrane in a wall of the housing whereby fluid can pass through the semi-permeable membrane into the pressurized enclosure thereby increasing the pressure in the pressurized enclosure. The implantable shunt device may be for use in the treatment of glaucoma. Further, there is provided a method of reducing intraocular pressure including the steps of attaching a boicompatible implantable shunt device to the scleral surface of an eye and inserting an inlet tube into the anterior chamber of the eye.
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