Patents by Inventor Naotake Maekubo

Naotake Maekubo 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).

  • Patent number: 11925767
    Abstract: To provide a catheter having electrodes to be subjected to application of voltages different from each other in polarity. An outer tube member (3) having a lumen (2); a handle provided on a proximal side of the outer tube member (3); a plurality of electrodes (5) provided on the outer tube member (3); conducting wires (6) connected to one or more of the electrodes (5) and disposed in the lumen (2), the conducting wires (6); and an operating wire (7) having a distal end portion fixed to a distal end portion of the outer tube member (3), wherein one of the electrodes (5a) is connected to a conducting wire (6a) at a connection point, which is different from a connecting point, where another electrode (5b) is connected to another conducting wire (6b), in a circumferential direction of the outer tube member (3).
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: March 12, 2024
    Assignee: KANEKA CORPORATION
    Inventors: Daichi Kamiyama, Naotake Maekubo
  • Patent number: 11305129
    Abstract: A defibrillation system having a defibrillation catheter and a power supply part; a first connector member (11) is connected to a handle member; a second connector member (21) is connected to the power supply part; the first connector member (11) has a first insulating member (12), first electrodes (13) protruding from the first insulating member (12), and a first tubular member (14); the second connector member (21) has a second insulating member (22) having longitudinal holes, second electrodes (23) disposed on an inner wall of the longitudinal holes, and a second tubular member (24); the first tubular member (11) has a first space (15) being to contain the second tubular member (24), a second space (16) not containing the first insulating member (12) but containing the first electrodes (13), and a third space (17) containing neither the first insulating member (12) nor the first electrodes (13).
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: April 19, 2022
    Assignee: KANEKA CORPORATION
    Inventors: Shinichiro Sakamoto, Daichi Kamiyama, Naotake Maekubo
  • Publication number: 20210113845
    Abstract: A defibrillation system having a defibrillation catheter and a power supply part; a first connector member (11) is connected to a handle member; a second connector member (21) is connected to the power supply part; the first connector member (11) has a first insulating member (12), first electrodes (13) protruding from the first insulating member (12), and a first tubular member (14); the second connector member (21) has a second insulating member (22) having longitudinal holes, second electrodes (23) disposed on an inner wall of the longitudinal holes, and a second tubular member (24); the first tubular member (11) has a first space (15) being to contain the second tubular member (24), a second space (16) not containing the first insulating member (12) but containing the first electrodes (13), and a third space (17) containing neither the first insulating member (12) nor the first electrodes (13).
    Type: Application
    Filed: January 29, 2019
    Publication date: April 22, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Shinichiro SAKAMOTO, Daichi KAMIYAMA, Naotake MAEKUBO
  • Publication number: 20210046285
    Abstract: A catheter handle (1) includes handle body (2), and rotary member (3) being free to rotate with respect to the handle body (2) and connected to the wire. The handle body (2), in a planar view from a rotation axis direction of the rotary member (3), has second space (12) for the conductive wire is located from more distal side to more proximal side than first space (11) for the rotary member (3). The operating part (4) of the rotary member (3) is disposed on one side, and the second space (12) is disposed on another side, in the width direction of the handle (1). Length L1 from the center of the rotation axis to the rotary member (3) on the one side is longer than length L2 from the center of the rotation axis to the rotary member (3) on the another side.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 18, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Naotake MAEKUBO, Daichi KAMIYAMA
  • Publication number: 20210038859
    Abstract: To provide a catheter having electrodes to be subjected to application of voltages different from each other in polarity. An outer tube member (3) having a lumen (2); a handle provided on a proximal side of the outer tube member (3); a plurality of electrodes (5) provided on the outer tube member (3); conducting wires (6) connected to one or more of the electrodes (5) and disposed in the lumen (2), the conducting wires (6); and an operating wire (7) having a distal end portion fixed to a distal end portion of the outer tube member (3), wherein one of the electrodes (5a) is connected to a conducting wire (6a) at a connection point, which is different from a connecting point, where another electrode (5b) is connected to another conducting wire (6b), in a circumferential direction of the outer tube member (3).
    Type: Application
    Filed: February 5, 2019
    Publication date: February 11, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Daichi KAMIYAMA, Naotake MAEKUBO
  • Patent number: 10856883
    Abstract: A medical clip cartridge (1) for connecting a medical clip (22) to a line member (25) having a connection part (31) on a distal part thereof, comprising an insertion port (2) for inserting a line member (25), an insertion path (3) extending distally from the insertion port (2), and a storing part (4) for storing a clip (22), that is connected to a distal end of the insertion path (3), wherein the insertion path (3) has a protrusion (5) projecting from an inner surface of the insertion path, and the protrusion (5) has a part whose top surface widens toward a distal end thereof and whose height from the inner surface of the insertion path increases toward the distal end.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: December 8, 2020
    Assignee: KANEKA CORPORATION
    Inventor: Naotake Maekubo
  • Patent number: 10828035
    Abstract: An object of the present invention is to provide a connector that facilitates a connecting operation with a clip, prevents an unintended release of the clip, and suppresses a misoperation of the clip in a holding operation; a medical clip device including the connector; and a method for producing the medical clip device. A connector (20) for connecting a medical clip for holding a target site with a line member for moving the clip comprises: a through hole (21) whose depth direction is nonparallel to an axial direction; and a thin part that is formed at least at a part distal to the through hole and is thinner than a distal end of the through hole (21).
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: November 10, 2020
    Assignee: KANEKA CORPORATION
    Inventor: Naotake Maekubo
  • Patent number: 10441292
    Abstract: A clip device for an endoscope of the present invention comprises an outer tubular body 70; an inner tubular body 80 provided in the outer tubular body 70; a line member 50 placed in the inner tubular body 80; and a pinching part 20, for holding an indwelling clip, connected to a distal side of the line member 50; wherein the pinching part 20 has two pinching base plates 30a and 30b, a blade part 40a is provided at a distal end of the pinching base plate 30a and formed toward an inside of the pitching base plate 30a, a blade part 40b is provided at a distal end of the pinching base plate 30b and formed toward an inside of the pinching base plate 30b, a Young's modulus of the blade part 40a is smaller than that of the pinching base plate 30a, and a Young's modulus of the blade part 40b is smaller than that of the pinching base plate 30b.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: October 15, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Masato Tsueda, Yuki Mukai, Naotake Maekubo
  • Publication number: 20190282240
    Abstract: A medical clip cartridge (1) for connecting a medical clip (22) to a line member (25) having a connection part (31) on a distal part thereof, comprising an insertion port (2) for inserting a line member (25), an insertion path (3) extending distally from the insertion port (2), and a storing part (4) for storing a clip (22), that is connected to a distal end of the insertion path (3), wherein the insertion path (3) has a protrusion (5) projecting from an inner surface of the insertion path, and the protrusion (5) has a part whose top surface widens toward a distal end thereof and whose height from the inner surface of the insertion path increases toward the distal end.
    Type: Application
    Filed: November 8, 2016
    Publication date: September 19, 2019
    Applicant: KANEKA CORPORATION
    Inventor: Naotake MAEKUBO
  • Publication number: 20190231352
    Abstract: An object of the present invention is to provide a medical clip that enables the adjustment of a holding position or a closing angle until the very moment of closing the clip.
    Type: Application
    Filed: October 4, 2016
    Publication date: August 1, 2019
    Applicant: KANEKA CORPORATION
    Inventor: Naotake MAEKUBO
  • Publication number: 20180353183
    Abstract: An object of the present invention is to provide a connector that facilitates a connecting operation with a clip, prevents an unintended release of the clip, and suppresses a misoperation of the clip in a holding operation; a medical clip device including the connector; and a method for producing the medical clip device. A connector (20) for connecting a medical clip for holding a target site with a line member for moving the clip comprises: a through hole (21) whose depth direction is nonparallel to an axial direction; and a thin part that is formed at least at a part distal to the through hole and is thinner than a distal end of the through hole (21).
    Type: Application
    Filed: December 6, 2016
    Publication date: December 13, 2018
    Applicant: KANEKA CORPORATION
    Inventor: Naotake MAEKUBO
  • Publication number: 20170296197
    Abstract: A clip device for an endoscope of the present invention comprises an outer tubular body 70; an inner tubular body 80 provided in the outer tubular body 70; a line member 50 placed in the inner tubular body 80; and a pinching part 20, for holding an indwelling clip, connected to a distal side of the line member 50; wherein the pinching part 20 has two pinching base plates 30a and 30b, a blade part 40a is provided at a distal end of the pinching base plate 30a and formed toward an inside of the pitching base plate 30a, a blade part 40b is provided at a distal end of the pinching base plate 30b and formed toward an inside of the pinching base plate 30b, a Young's modulus of the blade part 40a is smaller than that of the pinching base plate 30a, and a Young's modulus of the blade part 40b is smaller than that of the pinching base plate 30b.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 19, 2017
    Applicant: KANEKA CORPORATION
    Inventors: Masato TSUEDA, Yuki MUKAI, Naotake MAEKUBO
  • Publication number: 20170281176
    Abstract: A medical clip device includes an outer tubular body; an inner tubular body provided in the outer tubular body; a clip provided at a distal side of the inner tubular body; and a line member including a first end part, a second end part, and a middle part, wherein the first end part and the second end part extend out of the inner tubular body from an inside of the inner tubular body at a proximal side of the inner tubular body, and the middle part is hung on the clip at the distal side of the inner tubular body.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 5, 2017
    Applicant: Kaneka Corporation
    Inventors: Naotake Maekubo, Masato Tsueda