Patents by Inventor Niyazi U. Beyhan

Niyazi U. Beyhan 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).

  • Stent range transducers and methods of use
    Publication number: 20040148006
    Abstract: The present invention provides exemplary apparatus, systems and methods for accurately delivering and positioning a stent within a body lumen, particularly within a bifurcated body lumen. In one embodiment, a stent delivery system (100) includes a catheter (15) comprising a catheter body having a distal end, a proximal end, a longitudinal axis (200) and a lumen. An expansion device, which in one embodiment is a balloon (20), is disposed near the catheter body distal end, and a stent (10) having a side hole (12) is disposed over the expansion device. An ultrasound transducer (22) is disposed near the catheter body distal end and positioned for transmitting and receiving ultrasound signals through the side hole to help properly align the stent side hole with a branch vessel (16).
    Type: Application
    Filed: January 16, 2004
    Publication date: July 29, 2004
    Inventors: Charles J. Davidson, Gil M. Vardi, Eric Williams, Stephen Kao, Niyazi U. Beyhan
  • Guidewire introducer sheath
    Patent number: 6682536
    Abstract: Systems and methods for positioning a first guidewire (25) in a primary vessel (M) and a second guidewire (27) in a branch vessel (B). One embodiment comprises an introducer (10) having first (12) and second lumens (14) adapted to slidably receive the first guidewire within the first lumen and the second guidewire within the second lumen. One method embodiment includes inserting the first guidewire into the main vessel, introducing the introducer over the first guidewire, and inserting the second guidewire within the second lumen such that the second guidewire extends into the branch vessel. The introducer is withdrawn while maintaining the first and second guidewires in the respective vessels.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: January 27, 2004
    Assignee: Advanced Stent Technologies, Inc.
    Inventors: Gil M. Vardi, Eric Williams, Elsa Chavez, Henry Bourang, Niyazi U. Beyhan
  • Guidewire Introducer Sheath
    Publication number: 20010044622
    Abstract: Systems and methods for positioning a first guidewire (25) in a primary vessel (M) and a second guidewire (27) in a branch vessel (B). One embodiment comprises an introducer (10) having first (12) and second lumens (14) adapted to slidably receive the first guidewire within the first lumen and the second guidewire within the second lumen. One method embodiment includes inserting the first guidewire into the main vessel, introducing the introducer over the first guidewire, and inserting the second guidewire within the second lumen such that the second guidewire extends into the branch vessel. The introducer is withdrawn while maintaining the first and second guidewires in the respective vessels.
    Type: Application
    Filed: March 26, 2001
    Publication date: November 22, 2001
    Inventors: Gil M. Vardi, Eric Williams, Elsa Chavez, Henry Bourang, Niyazi U. Beyhan