Patents by Inventor Joel E. Berkeland

Joel E. Berkeland 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).

  • Multi-lumen ITPV endotracheal tube
    Patent number: 5291882
    Abstract: Intratracheal pulmonary ventilation is introduced to the distal end of an endotracheal tube by one or more intratracheal pulmonary ventilation tubes located in the wall of an endotracheal tube. The direction of flow of the intratracheal pulmonary ventilation is directed away from the distal end of said endotracheal tube, towards the proximal end of said endotracheal tube. The flow through the intratracheal pulmonary ventilation tube reduces the amount of carbon dioxide by replacing the gas located between the distal end of the endotracheal tube and the proximal end of the endotracheal tube where the endotracheal tube is connected to an artificial ventilation system.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: March 8, 1994
    Inventors: Imad R. Makhoul, Joel E. Berkeland