Patents by Inventor Wouter Jan GEELHOED

Wouter Jan GEELHOED 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).

  • Arteriovenous graft system, arteriovenous valve device and method to implant an arteriovenous graft system
    Patent number: 12059339
    Abstract: A subcutaneous arteriovenous graft system includes an arteriovenous graft having an arterial end, a venous end opposite to the arterial end and an internal volume between the arterial end and the venous end, and a valve device that can be arranged in an open state, in which fluid flow through the graft is possible and a closed state in which the fluid flow through the arteriovenous graft is blocked. The valve device is constructed to decrease, in the closed state of the valve device, the internal volume of the complete graft to substantially zero.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: August 13, 2024
    Assignee: Academisch Ziekenhuis Leiden h.o.d.n. Leids Universitair Medisch Centrum
    Inventors: Wouter Jan Geelhoed, Koen Elzert Adriaan van der Bogt, Joris Ivo Rotmans
  • ARTERIOVENOUS GRAFT SYSTEM, ARTERIOVENOUS VALVE DEVICE AND METHOD TO IMPLANT AN ARTERIOVENOUS GRAFT SYSTEM
    Publication number: 20220047375
    Abstract: A subcutaneous arteriovenous graft system includes an arteriovenous graft having an arterial end, a venous end opposite to the arterial end and an internal volume between the arterial end and the venous end, and a valve device that can be arranged in an open state, in which fluid flow through the graft is possible and a closed state in which the fluid flow through the arteriovenous graft is blocked. The valve device is constructed to decrease, in the closed state of the valve device, the internal volume of the complete graft to substantially zero.
    Type: Application
    Filed: September 11, 2019
    Publication date: February 17, 2022
    Inventors: Wouter Jan Geelhoed, Koen Elzert Adriaan van der Bogt, Joris Ivo Rotmans
  • FLUID VESSEL INSERTION DEVICE WITH AUTOMATIC NEEDLE RETRACTION
    Publication number: 20210338987
    Abstract: The present invention relates to a fluid vessel insertion device comprising a) a puncture member arranged for location within a cannulation sheet and comprising an interior lumen; b) a retractor arranged to actuate the puncture member relative to the cannulation sheet in use between i) a first situation in which a distal end of the puncture member protrudes beyond an end of the cannulation sheet, and ii) a second situation in which the distal end of the puncture member is within the cannulation sheet; c) a chamber in fluid communication with an exterior of the device only via the lumen and distal end of the puncture member; and d) a sheet of material located in the chamber to prevent the proximal end of the puncture member from moving; wherein the distal end of the puncture member is configured as a puncturing end having a distal n end opening for insertion into a fluid vessel when in use, and wherein the retractor triggers retraction of the puncture member between the first and the second situation automatic
    Type: Application
    Filed: October 4, 2019
    Publication date: November 4, 2021
    Inventors: Wouter Jan GEELHOED, Joris Ivo ROTMANS