Patents by Inventor Hiroki Nagatsu

Hiroki Nagatsu 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).

  • Medical tube, catheter and method of manufacturing medical tube
    Patent number: 11331451
    Abstract: A medical tube includes a distal portion provided on one end side having a first outer diameter, a first inner diameter, and a first thickness; a proximal portion provided on the other end side having a second outer diameter greater than the first outer diameter, a second inner diameter greater than the first inner diameter, and a second thickness greater than the first thickness; and an intermediate portion provided between the distal portion and the proximal portion and having an outer diameter, an inner diameter, and a thickness which gradually vary. Thus, a medical tube is provided having improved operability and which reduces the likelihood of bending during an operation.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: May 17, 2022
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Yasunori Yamashita, Noriyuki Kitada, Hiroki Nagatsu
  • MEDICAL TUBE, CATHETER AND METHOD OF MANUFACTURING MEDICAL TUBE
    Publication number: 20190275290
    Abstract: A medical tube includes a distal portion provided on one end side having a first outer diameter, a first inner diameter, and a first thickness; a proximal portion provided on the other end side having a second outer diameter greater than the first outer diameter, a second inner diameter greater than the first inner diameter, and a second thickness greater than the first thickness; and an intermediate portion provided between the distal portion and the proximal portion and having an outer diameter, an inner diameter, and a thickness which gradually vary. Thus, a medical tube is provided having improved operability and which reduces the likelihood of bending during an operation.
    Type: Application
    Filed: March 22, 2019
    Publication date: September 12, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasunori YAMASHITA, Noriyuki KITADA, Hiroki NAGATSU
  • MEDICAL TUBE, CATHETER AND METHOD OF MANUFACTURING MEDICAL TUBE
    Publication number: 20140309533
    Abstract: A medical tube includes a distal portion provided on one end side having a first outer diameter, a first inner diameter, and a first thickness; a proximal portion provided on the other end side having a second outer diameter greater than the first outer diameter, a second inner diameter greater than the first inner diameter, and a second thickness greater than the first thickness; and an intermediate portion provided between the distal portion and the proximal portion and having an outer diameter, an inner diameter, and a thickness which gradually vary. Thus, a medical tube is provided having improved operability and which reduces the likelihood of bending during an operation.
    Type: Application
    Filed: June 25, 2014
    Publication date: October 16, 2014
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasunori YAMASHITA, Noriyuki Kitada, Hiroki Nagatsu