In one embodiment, the invention provides a device for decreasing intracranial or intraocular pressures. The device comprises a housing having an inlet opening and an outlet opening that is adapted to be interfaced with a person's airway. The device further includes a valve system that is operable to...http://www.google.ca/patents/US7185649?utm_source=gb-gplus-sharePatent US7185649 - Systems and methods for increasing cerebral spinal fluid flow
