Patents by Inventor Takahisa HAMABUCHI

Takahisa HAMABUCHI 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).

  • Publication number: 20240149025
    Abstract: Provided is a balloon for a balloon catheter that is easy to insert in a body cavity, has good pushability, and can easily incise a stenosis. A balloon for a balloon catheter, having a balloon body (20), the balloon body (20) having a protrusion part (60) that projects outwardly in the radial direction y from its outer surface in the straight tubular part (23) and the proximal tapered part (22), wherein a ratio W1/H1 of a height H1 of the protrusion part (60) and a width W1 of the protrusion part (60) in the straight tubular part (23) is greater than a ratio W2/H2 of a height H2 of the protrusion part (60) and a width W2 of the protrusion part (60) in the proximal tapered part (22).
    Type: Application
    Filed: February 4, 2022
    Publication date: May 9, 2024
    Applicant: KANEKA CORPORATION
    Inventors: Masahiro KOJIMA, Masato TSUEDA, Yoshinori NAKANO, Takahisa HAMABUCHI
  • Publication number: 20240050712
    Abstract: Provided is a balloon for a balloon catheter that can incise a stenosis obliquely or incise a stenosis widely in the deflated state. A balloon for a balloon catheter having a balloon body (20) and a protrusion part (60) having a tip part (61), and satisfying the following (1) and/or (2): (1) the tip part (61) of the distal tapered part (24) is located on a first direction (C1) side and not on a second direction (C2) side in the circumferential direction of the balloon body (20) with respect to a straight line (Ld) in the deflated state; (2) the tip part (61) of the proximal tapered part (22) is located on a first direction (C1) side and not on a second direction (C2) side in the circumferential direction of the balloon body (20) with respect to a straight line (Lp) in the deflated state.
    Type: Application
    Filed: October 20, 2021
    Publication date: February 15, 2024
    Applicant: KANEKA CORPORATION
    Inventors: Masahiro KOJIMA, Takahisa HAMABUCHI
  • Publication number: 20230405289
    Abstract: Disclosed is a balloon for a balloon catheter that can prevent kinking or buckling of the balloon and elongation of the balloon in the longitudinal direction. A balloon (2) for a balloon catheter has a balloon body (20); the balloon body (20) has an inflating part (20e), a distal sleeve part (25), and a proximal sleeve part (21); the distal sleeve part (25) has a fixed part (25f) fixed to the shaft (3); the balloon (2) has a reinforcing part (60) disposed on an inner surface of the distal sleeve part (25) at a part of a circumferential direction of the distal sleeve part (25); the reinforcing part (60) is located proximal to a distal end of the fixed part (25f); and the balloon (2) does not have the reinforcing part (60) on an inner surface of the proximal sleeve part (21).
    Type: Application
    Filed: August 16, 2021
    Publication date: December 21, 2023
    Applicant: KANEKA CORPORATION
    Inventors: Masahiro KOJIMA, Masato TSUEDA, Yoshinori NAKANO, Takahisa HAMABUCHI
  • Publication number: 20230398335
    Abstract: Disclosed is a balloon for a balloon catheter that can be easily folded to facilitate insertion into and through a body cavity and prevent elongation of the balloon in the longitudinal axis direction. A balloon satisfies at least one of: (I) a distal tapered part (24) has a first part (610) having an inner protrusion part (61) and a second part (620) not having the inner protrusion part (61), and the distal tapered part (24) has an outer protrusion part (62) in the entire extent of the second part (620); and (II) a proximal tapered part (22) has a first part (610) having an inner protrusion part (61) and a second part (620) not having the inner protrusion part (61), and the proximal tapered part (22) has an outer protrusion part (62) in the entire extent of the second part (620).
    Type: Application
    Filed: November 15, 2021
    Publication date: December 14, 2023
    Applicant: KANEKA CORPORATION
    Inventors: Masahiro KOJIMA, Yoshinori NAKANO, Masato TSUEDA, Takahisa HAMABUCHI
  • Publication number: 20220304718
    Abstract: Disclosed is a balloon catheter that can prevent or reduce axial rotation and circumferential shift of the elongate body while ensuring good passage of the balloon in the blood vessel. The balloon catheter (100) has a shaft (110); a balloon (120); an elongate body (180) extending along the shaft (110) and having a body tissue contacting part at its distal end part; and an elongate body lumen (130), the elongate body lumen (130) having a first engagement part (131) so that axial rotation angle of the elongate body (180) is 0° to 60°, and the first engagement part (131) being located between the distal end (130d) of the elongate body lumen (130) and a position 30 cm from the distal end of the elongate body lumen (130) toward the proximal side.
    Type: Application
    Filed: June 16, 2022
    Publication date: September 29, 2022
    Applicant: KANEKA CORPORATION
    Inventors: Masahiro KOJIMA, Takahisa HAMABUCHI, Masato TSUEDA