Patents by Inventor Dierk Vorwerk

Dierk Vorwerk 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: 5562724
    Abstract: An endovascular graft prosthesis for arrangement at or in the vicinity of a bifurcation in the arterial system of a patient, e.g. for the purpose of repairing an aneurysm or the aortic bifurcation comprises a substantially tubular main body for location in the principal upstream arteria above the bifurcation such as th aorta and substantially tubular legs joining said main body in a bifurcation and extending into each of two branch arteries such as the iliac arteries. The main body (8) is substantially bag-shaped with an open proximal upstream end and a distal downstream bottom region in which two outlet openings (9, 10) are provided and is attachable to the inner side of the principal arteria (2) by means of an expandable stent device (11).
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 8, 1996
    Assignee: William Cook Europe A/S
    Inventors: Dierk Vorwerk, Rolf W. Gunther, Thomas Schmitz-Rode
  • Patent number: 5102415
    Abstract: A triple catheter for removing of blood clots from arteries and veins is equipped with an outer catheter (1) that can be inserted into a blood vessel and an inner catheter (5) with an inflatable baloon (6) at its distal end that can be inserted into the outer catheter (1). The inner catheter (5) is surrounded by an intermediate catheter (2) also inserted into the outer catheter (1). The intermediate catheter (2) has a radially expandable distal end receptacle (3) made of an elastic mesh structure of spring wires or plastic monofilaments covered by or embedded in an elastic plastic coating. A very small puncture channel is required for the insertion of such a triple catheter through the wall of a blood vessel.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: April 7, 1992
    Inventors: Rolf W. Guenther, Dierk Vorwerk