Patents by Inventor Roberto Rangoni

Roberto Rangoni 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).

  • Tracheal intubation cannula with external valve
    Patent number: 4809693
    Abstract: This invention relates to a cannula for tracheal intubation, inserted through the hole made in the trachea of the patient. The cannula is fitted at the top with a mechanically operated valve which remains open during normal breathing but which can close and consequently interrupt the flow of air to the outside when the patient, in order to direct the air towards the vocal cords, breathes out with greater force, sufficient to overcome the resistance of the spring within the valve.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: March 7, 1989
    Inventors: Marco Rangoni, Roberto Rangoni, Dante Cavalli, Walter Cavalli