Patents by Inventor Duane M. Nelson

Duane M. Nelson 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).

  • Dual catheter and method for separately withdrawing fluids from the human heart
    Patent number: 4548597
    Abstract: A dual catheter assembly and a method for separately withdrawing fluids from a vena cava and a right atrium of a human heart into extracorporeal equipment. The assembly includes a first catheter that can be positioned in the vena cava and a second catheter that can be simultaneously positioned in the right atrium.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: October 22, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Duane M. Nelson