| 摘要 |
This invention is implanted fluid shunting devices and associated methods for controlling the pressure of fluids within anatomical spaces or cavities of the body. The device (10) generally comprises a tube (12) having a diffusion barrier (20) (e.g., diffusion chamber) formed on a proximal end thereof. Fluid which flows through the tube will collect within the diffusion chamber (20) and will diffuse outwardly therethrough. However, the presence of the diffusion chamber (20) will prevent microbes, cells or other matter from interfering with, or back flowing through, the tube (12). Additionally, the tube may be provided with a pressure opening aperture (30) through which fluid from the tube may flow into the diffusion chamber (20). Such pressure opening aperture (30) will remain closed until the pressure of fluid within the tube exceeds a predetermined maximum pressure pmax. In this manner, the pressure opening aperture (30) will limit the amount of fluid drained from the anatomical space or cavity of the body, thereby avoiding hypotony within such anatomical space or cavity.
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