Patents by Inventor George R. Ryan

George R. Ryan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Disposable fiber optic probe
    Patent number: 6095974
    Abstract: An apparatus for transferring two frequencies of electromagnetic energy to and from a portion of a living body for the purpose of blood oxygen saturation measurements. The two frequencies of electromagnetic energy are transferred to the portion of the living body through a single optical fiber cable (which could be a bundle) to a coupler and then through a short section of optical cable to an optical element adjacent to the portion of the living body. After the two frequencies of electromagnetic energy are transmitted through the portion of the living body they are received by another optical element and transported away from the portion of the living body to a coupler through a short section of optical cable where they may be converted to electrical signals. Alternatively, the two frequencies of electromagnetic energy are carried away from the coupler.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: August 1, 2000
    Assignee: Respironics, Inc.
    Inventors: David M. Shemwell, George R. Ryan
  • Method and apparatus for diode laser pulse oximetry using fiber optical cables
    Patent number: 6026312
    Abstract: A method and apparatus for transferring two frequencies of electromagnetic energy to and from a portion of a living body for the purpose of blood oxygen saturation measurements. The two frequencies of electromagnetic energy are transferred to the portion of the living body through a single optical fiber cable (which could be a bundle) to a coupler and then through a short section of optical cable to an optical element adjacent to the portion of the living body. After the two frequencies of electromagnetic energy are transmitted through the portion of the living body they are received by another optical element and transported away from the portion of the living body to a coupler through a short section of optical cable where they may be converted to electrical signals. Alternatively, the two frequencies of electromagnetic energy are carried away from the coupler.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: February 15, 2000
    Assignee: Respironics, Inc.
    Inventors: David M. Shemwell, George R. Ryan