Patents by Inventor Youichirou Kuwano

Youichirou Kuwano 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: 10835317
    Abstract: Disclosed is a treatment device for occluding a body lumen, including: an elongated body which can be inserted into the body lumen; a flat portion forming section which is supported by the elongated body, is expandable widthwise on a more distal side than the elongated body, and deforms the body lumen into a form having a flat portion at a distal portion of the flat portion forming section upon the expansion of the flat portion forming section within the body lumen; and an administering section which administers, toward the flat portion formed by the flat portion forming section, a treatment which acts to occlude the flat portion.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: November 17, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko Shimizu, Takashi Kitaoka, Youichirou Kuwano
  • Publication number: 20200046947
    Abstract: An air removal mechanism includes a body having a hollow portion capable of storing a liquid. In a state where the body is mounted on an introducer sheath, a medical device to be inserted into the introducer sheath is insertable via the hollow portion. The body has an injection path which communicates with the hollow portion and on which an outlet is open toward a valve body.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 13, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Takayuki MORI, Kinya HARADA, Wataru KARINO, Katsuhiko SHIMIZU, Youichirou KUWANO
  • Patent number: 9987026
    Abstract: A medical instrument is disclosed for crushing a thrombus present in a pulmonary artery of a living body by an ultrasonic vibration. The medical instrument includes an elongated main body section capable of being inserted into an airway of the living body, and an ultrasonic oscillation section which can be inserted into the living body by the main body section and which oscillates the ultrasonic vibration inside the living body. By the medical instrument, a thrombus present in a pulmonary artery can be rapidly crushed, whereby a therapeutic effect on pulmonary embolism can be obtained.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: June 5, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko Shimizu, Youichirou Kuwano
  • Patent number: 9962215
    Abstract: Disclosed is a treatment device for occluding a body lumen, including: a hollow shaft which can be inserted into the body lumen; a flat portion forming section which has a pair of arms inserted in the shaft, the arms capable of being protruded from and retracted into a distal end opening of the shaft and expandable widthwise, and which deforms the body lumen into a form having a flat portion as the pair of arms is expanded within the body lumen; and a heating section which is extendable and contractible in a width direction of the flat portion forming section, is extended as the pair of arms is expanded within the body lumen, and heats the flat portion.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: May 8, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko Shimizu, Youichirou Kuwano
  • Publication number: 20170189055
    Abstract: A blood vessel dissecting device method involves inserting a dissecting device into a living body, advancing the dissecting device along a vein, and dissecting the vein and tissue bound to the vein from other surrounding tissue.
    Type: Application
    Filed: January 7, 2016
    Publication date: July 6, 2017
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Satoru Suehara, Makoto Jinno, Tatsunori Fujii, Youichirou Kuwano
  • Publication number: 20170189051
    Abstract: A blood vessel dissecting device method involves inserting a dissecting device into a living body, advancing the dissecting device along a vein, and dissecting the vein and tissue bound to the vein from other surrounding tissue.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Tatsunori FUJII, Seiichi OTSUBO, Katsunori EBATA, Youichirou KUWANO
  • Publication number: 20150342625
    Abstract: A medical instrument is disclosed for crushing a thrombus present in a pulmonary artery of a living body by an ultrasonic vibration. The medical instrument includes an elongated main body section capable of being inserted into an airway of the living body, and an ultrasonic oscillation section which can be inserted into the living body by the main body section and which oscillates the ultrasonic vibration inside the living body. By the medical instrument, a thrombus present in a pulmonary artery can be rapidly crushed, whereby a therapeutic effect on pulmonary embolism can be obtained.
    Type: Application
    Filed: August 7, 2015
    Publication date: December 3, 2015
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko SHIMIZU, Youichirou KUWANO
  • Publication number: 20150265350
    Abstract: Disclosed is a treatment device for occluding a body lumen, including: an elongated body which can be inserted into the body lumen; a flat portion forming section which is supported by the elongated body, is expandable widthwise on a more distal side than the elongated body, and deforms the body lumen into a form having a flat portion at a distal portion of the flat portion forming section upon the expansion of the flat portion forming section within the body lumen; and an administering section which administers, toward the flat portion formed by the flat portion forming section, a treatment which acts to occlude the flat portion.
    Type: Application
    Filed: March 19, 2015
    Publication date: September 24, 2015
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko SHIMIZU, Takashi KITAOKA, Youichirou KUWANO
  • Publication number: 20150265332
    Abstract: Disclosed is a treatment device for occluding a body lumen, including: a hollow shaft which can be inserted into the body lumen; a flat portion forming section which has a pair of arms inserted in the shaft, the arms capable of being protruded from and retracted into a distal end opening of the shaft and expandable widthwise, and which deforms the body lumen into a form having a flat portion as the pair of arms is expanded within the body lumen; and a heating section which is extendable and contractible in a width direction of the flat portion forming section, is extended as the pair of arms is expanded within the body lumen, and heats the flat portion.
    Type: Application
    Filed: March 19, 2015
    Publication date: September 24, 2015
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko SHIMIZU, Youichirou KUWANO
  • Publication number: 20150258324
    Abstract: A tube connection structure is disclosed, which includes a first connector and a second connector that are fitted together. The first connector includes an outer cylinder; a communicating section which is formed with a liquid passage in which a liquid can circulate in a fitted state, and an annular valve body which is provided around the communicating section and seals an outer cylinder opening portion in a non-fitted state. The second connector includes an inner cylinder which pushes the annular valve body in the fitted state, an inner valve body which seals an inner cylinder opening portion in the non-fitted state and is pushed by the communicating section advancing into the inner cylinder through the inner cylinder opening portion in the fitted state, and a first seal member which is provided at least on an inner peripheral surface of the inner cylinder opening portion.
    Type: Application
    Filed: March 24, 2015
    Publication date: September 17, 2015
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Takahiro CHIDA, Kyouta KIMURA, Youichirou KUWANO
  • Publication number: 20150250536
    Abstract: A method of treating a varicose vein involves inserting an assembly into the vein, the assembly being comprised of an elongated body possessing a distal end at which is located an energy emitting member having a shape; contacting the inner wall of the vein with the distal end of the energy emitting member having the shape such that the distal end of the energy emitting member contacts the inner wall along a line; rotating the energy emitting member while the energy emitting member contacts the inner wall along the line; and occluding the vein by applying energy from the energy emitting member to the inner wall of the vein
    Type: Application
    Filed: March 10, 2014
    Publication date: September 10, 2015
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Katsuhiko Shimizu, Takashi Kitaoka, Youichirou Kuwano
  • Patent number: 9119936
    Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portion.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: September 1, 2015
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Youichi Itou, Yasunori Yamashita, Youichirou Kuwano
  • Publication number: 20130331820
    Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portion
    Type: Application
    Filed: August 12, 2013
    Publication date: December 12, 2013
    Applicant: Terumo Kabushiki Kaisha
    Inventors: Youichi Itou, Yasunori Yamashita, Youichirou Kuwano
  • Patent number: 8523841
    Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portion.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: September 3, 2013
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Youichi Itou, Yasunori Yamashita, Youichirou Kuwano
  • Publication number: 20110224650
    Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portion
    Type: Application
    Filed: March 4, 2011
    Publication date: September 15, 2011
    Applicant: Terumo Kabushiki Kaisha
    Inventors: Youichi ITOU, Yasunori Yamashita, Youichirou Kuwano