| 摘要 |
A glaucoma drainage device has a main drainage tube (2030) with a first end in an anterior chamber (340) of an eye and a second end in a drainage location (410). A bypass drainage tube (2040) is fluidly coupled to and in parallel with the main drainage tube. A pump (280) is in communication with the bypass drainage tube. The pump comprises a first driver (2020) and a first flexible membrane (2025) enclosing a first chamber (2027). A first check valve (255) is located upstream from the pump, and a second check valve (260) is located downstream from the pump. An active valve (270) is located upstream from the first check valve. The active valve comprises a second driver (2010) and a second flexible membrane (201) enclosing a second chamber (2017). A third check valve (250) is located between the active valve and the second end of the main drainage tube. A volume of the first chamber is changed to pump fluid from the anterior chamber. |
