Patents by Inventor Knud-Werner Gaarde

Knud-Werner Gaarde 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).

  • Patent number: 4496353
    Abstract: A hollow surgical disposable needle of the Redon type and posteriorly surrounding and retaining a tube-shaped drain manufactured in one piece of a strip of stainless steel. This strip is bent into pipe-shape and pressed together at its front end in such a manner that the compressed part of the pipe comprises a cutting edge inclined relative to the longitudinal axis of the needle, whereas the pipe at its rear end comprises internal barbs securing the drain. In this manner an advantageous and very inexpensive Redon needle for disposable use is obtained.
    Type: Grant
    Filed: September 9, 1982
    Date of Patent: January 29, 1985
    Inventors: Christian Overland, Knud-Werner Gaarde