Patents Assigned to Metaphase Technology Access, Ltd.
  • Check valve and method for facilitating pressurization of a patient's middle ear
    Patent number: 5746725
    Abstract: A check valve for providing fluid communication between a patient's middle ear and external auditory canal for improved comfort and hearing. The check valve is configured for permitting fluid to flow from the external auditory canal into the middle ear and for checking fluid flow from the middle ear to the external auditory canal.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: May 5, 1998
    Assignee: Metaphase Technology Access, Ltd.
    Inventors: Tadmor Shalon, John J. Shea, Jr.