Patents by Inventor Fumikazu WATANABE

Fumikazu WATANABE 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).

  • Oblique inflation type balloon catheter and balloon base
    Patent number: 11617868
    Abstract: The balloon catheter of the present invention is provided with a balloon base at a front end of a tubular catheter body having a predetermined length. The balloon base includes a cylindrical base having a larger diameter than an outer diameter of the catheter body, and a lumen having substantially the same diameter as the outer diameter of the catheter body is formed on the base over an entire length with both ends opened. A central axis of the lumen is inclined at a predetermined angle with respect to a central axis of the base concentric with a central axis of the catheter body, and an outer peripheral surface is formed in parallel with the central axis of the base. The balloon is provided on the outer peripheral surface of the parallel base to obliquely inflate with respect to the central axis of the catheter body during inflation.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: April 4, 2023
    Assignees: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, FUJI SYSTEMS CORPORATION
    Inventors: Eisei Gu, Takumi Fukumoto, Fumikazu Watanabe, Akihiro Asai
  • OBLIQUE INFLATION TYPE BALLOON CATHETER AND BALLOON BASE
    Publication number: 20190366058
    Abstract: The balloon catheter of the present invention is provided with a balloon base at a front end of a tubular catheter body having a predetermined length. The balloon base includes a cylindrical base having a larger diameter than an outer diameter of the catheter body, and a lumen having substantially the same diameter as the outer diameter of the catheter body is formed on the base over an entire length with both ends opened. A central axis of the lumen is inclined at a predetermined angle with respect to a central axis of the base concentric with a central axis of the catheter body, and an outer peripheral surface is formed in parallel with the central axis of the base. The balloon is provided on the outer peripheral surface of the parallel base to obliquely inflate with respect to the central axis of the catheter body during inflation.
    Type: Application
    Filed: March 30, 2016
    Publication date: December 5, 2019
    Applicants: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, FUJI SYSTEMS CORPORATION
    Inventors: Eisei GU, Takumi FUKUMOTO, Fumikazu WATANABE, Akihiro ASAI