Patents by Inventor Walter Laabs

Walter Laabs 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).

  • Suction device for medical purposes
    Patent number: 5964733
    Abstract: The invention relates to a suction device for medical purposes with one or more side apertures and with a valve which responds to a vacuum. The invention is characterised in that the side apertures are covered by film halves which overlap in the middle, one of said halves being made from highly elastic thin material while the other is made from a stiff inflexible material and covers the flexible film in the overlap region. The side apertures can also take the form of elongated apertures. An advantage of this embodiment is the low damage to tissue when used in the overpressure area especially in minimally invasive surgical applications.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: October 12, 1999
    Inventors: Walter Laabs, Hans-Gunter Appel
  • Suction device for medical use
    Patent number: 5542929
    Abstract: The invention relates to a suction device for medical use, in which an aspirator (1) as illustrated in FIG. 1 is proposed, which has one or a plurality of side openings (3), and which is provided with a valve (4) which responds to underpressure.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: August 6, 1996
    Inventors: Walter Laabs, Hans-Gunter Appel