Patents by Inventor Ryo Okamura

Ryo Okamura 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: 10286186
    Abstract: A guiding catheter assembly includes a guiding catheter which has a catheter main body and a protective sheath in covering relation to the outer peripheral portion of the catheter main body, and a dilator insertable into the guiding catheter. The protective sleeve can be moved in an axial direction with respect to the catheter main body. The protective sheath has a thin film portion which is formed of a tube-like thin film and through which the catheter main body can be inserted, and a housing portion which includes a lumen through which the catheter main body can be inserted.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: May 14, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Ryo Okamura
  • Patent number: 10245411
    Abstract: A medical elongated body including a tubular main body and a hub connected to the tubular main body. The medical elongated body includes a strain relief supported by a distal portion of the hub. The strain relief surrounds a predetermined range of the proximal portion of the tubular main body. The medical elongated body includes a hydrophilic lubricating coating layer and a temperature responsive lubricating coating layer on the outer surface of the tubular main body, the temperature responsive lubricating coating layer being proximal to the hydrophilic lubricating coating layer. The hydrophilic lubricating coating layer exhibits lubricating characteristics when wet. The temperature responsive lubricating coating layer exhibits hydrophilic characteristics and lubricating characteristics at a temperature lower than a critical temperature when wet and exhibits hydrophobic characteristics and non-lubricating characteristics at a temperature equal to or higher than the critical temperature when wet.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 2, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Ryo Okamura, Kazuya Omata
  • Patent number: 10244947
    Abstract: An introducer having a dilator positioned in a sheath is inserted into a first blood vessel and, thereafter, only the dilator tube is drawn out of the first blood vessel and the sheath while the sheath remains in the first blood vessel. A diagnostic instrument having an outer diameter smaller than a maximum outer diameter permitting insertion into the sheath tube is inserted into the second blood vessel, and a stenosis of the second blood vessel is diagnosed. While keeping the sheath indwelling in the first blood vessel, a therapeutic instrument or a catheter permitting the therapeutic instrument to be inserted therein, which therapeutic instrument or catheter has a maximum outer diameter permitting insertion into the sheath tube, is inserted into the second blood vessel, and the second blood vessel is treated.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: April 2, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Naofumi Okajima, Ryo Okamura
  • Patent number: 10238835
    Abstract: An introducer sheath is disclosed having a high centering performance that is relatively easily capable of introducing an elongated body such as a catheter into an appropriate position, and is capable of appropriately maintaining hemostasis and insertibility of a valve body. The introducer sheath includes a tubular member provided with a hollow section through which an elongated body is freely insertable, a hub that includes an inner space which communicates with the hollow section of the tubular member and is provided on a proximal side of the tubular member, a valve body that is placed in the inner space of the hub, and an annular member that contacts with the valve body to fix the valve body to the inner space and includes a through-hole into which the elongated body can be inserted.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: March 26, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Ryo Okamura
  • Publication number: 20190029693
    Abstract: A hemostatic device can perform hemostasis by compressing a puncture site on a hand of a patient, and can prevent a movable range of fingers from being narrowed or can prevent misalignment at a wearing position, when the hemostatic device is worn on the hand. The hemostatic device has a covering portion to cover a site where bleeding is to be stopped on a hand of a patient, and a pressing portion that compresses the site where bleeding is to be stopped, in a state where the covering portion covers the site where bleeding is to be stopped. The covering portion includes a securing portion that surrounds at least a portion of the hand while covering the pressing portion, and a restriction portion that restricts a movement of the securing portion in an axial direction. The restriction portion is disposed between adjacent fingers and of the hand.
    Type: Application
    Filed: October 1, 2018
    Publication date: January 31, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Ryo OKAMURA
  • Publication number: 20190021763
    Abstract: An introducer sheath includes a tubular body configured to be percutaneously inserted into a body lumen and a hub that is connected to a proximal portion of the tubular body, wherein the tubular body contains a polyamide resin having a structural unit derived from a cyclic aliphatic hydrocarbon, and a wall thickness/inner diameter ratio of the tubular body is 1/14 or less, and a kink radius/outer diameter ratio of the tubular body is less than 10.
    Type: Application
    Filed: July 18, 2018
    Publication date: January 24, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Tuo ZHOU, Ryo OKAMURA
  • Patent number: 10124151
    Abstract: An introducer is configured to distinguish an introducer provided with a sheath tube whose wall thickness is reduced, from an introducer provided with a sheath tube whose wall thickness is not reduced, and to recognize the relationship between the inner diameter and the outer diameter for the sheath tube in which the wall thickness is reduced. The introducer includes an introducer sheath which includes an elongated hollow sheath tube and a sheath hub at the proximal side of the sheath tube and provided with a dilator insertion port. A first information piece having an inner diameter dimension of the sheath tube as an index is shown on at least one of the sheath tube and the sheath hub. Furthermore, a second information piece having an outer diameter dimension of the sheath tube as an index is shown on at least one of the sheath tube and the sheath hub.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 13, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Ryo Okamura, Yushin Yazaki
  • Patent number: 10124150
    Abstract: An introducer is configured to distinguish an introducer provided with a sheath tube whose wall thickness is reduced, from an introducer provided with a sheath tube whose wall thickness is not reduced, and to recognize the relationship between the inner diameter and the outer diameter for the sheath tube in which the wall thickness is reduced. An introducer includes an introducer sheath and a dilator. The introducer further includes a first information piece on at least one of the introducer sheath and the dilator and has an inner diameter dimension of the sheath tube as an index. Furthermore, a second information piece having an outer diameter dimension of the sheath tube as an index is on at least one of the introducer sheath and the dilator.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 13, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Ryo Okamura, Yushin Yazaki
  • Publication number: 20180280008
    Abstract: A treatment method is disclosed, which is capable of causing a medical elongated body to indwell the inside of a palmar artery of a patient, while suppressing kink, poor torque transmission ability, and poor operability of the medical elongated body. The treatment method includes causing a sheath tube of an introducer introduced into a blood vessel via a puncture site formed on an ulnar artery side of a palmar artery of the patient, to indwell the puncture site.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Ryo OKAMURA
  • Patent number: 10086172
    Abstract: An introducer sheath is configured to inhibit or prevent a distal section from being curled even when the wall thickness thereof is reduced, an introducer sheath is formed from a sheath tube that has a hollow section into which an elongated body can be inserted, and includes a sheath distal section and a sheath main body section. In the sheath for an introducer, the sheath distal section is formed to be harder than the sheath main body section.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: October 2, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Ryo Okamura
  • Publication number: 20180200402
    Abstract: A fixing tool is disclosed, which can help reduce a possibility that heat may be transferred to a user when a state is changed in a material of a member for fixing a predetermined site of a human body. The fixing tool has a deformation portion that is configured to be deformable, that at least partially covers an outer periphery of any site of a limb, a trunk, a neck, and a head, and that is deformed to align with the site through the deformation, and a heat insulating material that is disposed in a portion corresponding to at least the site on an outside surface of the deformation portion.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 19, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Ryo OKAMURA, Tatsunori FUJII, Miho KAI, Takashi AOKI
  • Publication number: 20180200479
    Abstract: A medical elongated body including a tubular main body and a hub connected to the tubular main body. The medical elongated body includes a strain relief supported by a distal portion of the hub. The strain relief surrounds a predetermined range of the proximal portion of the tubular main body. The medical elongated body includes a hydrophilic lubricating coating layer and a temperature responsive lubricating coating layer on the outer surface of the tubular main body, the temperature responsive lubricating coating layer being proximal to the hydrophilic lubricating coating layer. The hydrophilic lubricating coating layer exhibits lubricating characteristics when wet. The temperature responsive lubricating coating layer exhibits hydrophilic characteristics and lubricating characteristics at a temperature lower than a critical temperature when wet and exhibits hydrophobic characteristics and non-lubricating characteristics at a temperature equal to or higher than the critical temperature when wet.
    Type: Application
    Filed: March 15, 2018
    Publication date: July 19, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Ryo OKAMURA, Kazuya OMATA
  • Patent number: 10001891
    Abstract: An object of the present disclosure is to improve visibility while suppressing an impedance of an antenna pattern formed on a conductive film. In a film base material on which an antenna pattern for near field communication is formed, the antenna pattern is formed of a metal having excellent conductivity. The antenna pattern is formed into a loop line shape with three to five turns and has a length of 200 to 500 mm, an interval between adjacent loop lines of 200 to 400 ?m, and a line width of 4 to 20 ?m. The thickness of the antenna pattern is set to a value calculated by the following Formula (1) so that the impedance at a maximum load becomes equal to or less than 50?.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 19, 2018
    Assignee: SMK Corporation
    Inventors: Ryuji Ikeda, Masayuki Nagumo, Ryo Okamura, Kensaku Mizumoto
  • Patent number: 9901708
    Abstract: An introducer sheath is provided with a sheath tube which is formed of a tubular member provided with a hollow portion through which an elongated body is freely inserted and includes a distal portion having a tapering outer diameter and a main body portion having a constant outer diameter. The distal portion of the sheath tube includes a concave portion which is bent radially inward from an end portion, through which an elongated body protrudes, in a concave shape in a cross section parallel to an axial direction, and a convex portion which is contiguous to the concave portion and is bent radially outward in a convex shape in a cross section parallel to the axial direction.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: February 27, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Ryo Okamura, Yushin Yazaki
  • Publication number: 20180001061
    Abstract: An introducer sheath is disclosed, which includes a tube body that is percutaneously inserted into a body lumen; and a hub that is connected to a proximal portion of the tube body. The tube body contains a polyvinylidene fluoride resin, a ratio of a thickness to an inner diameter of the tube body is 1/16 or lower, and a ration of a kink radius to an outer diameter of the tube body is 9.5 or lower.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Ryo OKAMURA, Tatsuya OUCHI, Keisuke YOSHIDA, Daisuke NAKASHIMA, Katsuaki SOMA
  • Patent number: 9859616
    Abstract: The antenna-equipped film includes: a film base; an antenna pattern formed on the film base; and a number-of-winding setting circuit connected to the antenna pattern. The antenna pattern is formed as a plurality of linear loops. The number-of-winding setting circuit includes: first wiring connected to the antenna pattern to constitute a spiral circuit; jumper switches intervening by two each in each lap of the spiral circuit; second wiring connected to the end portion of the innermost lap of the spiral circuit and a position between the two jumper switches in each lap excluding the innermost lap and the outermost lap of the spiral circuit; third wiring connected in common to the other ends of the second wiring; and jumper switches intervening in the second wiring. The outer end of the spiral circuit and the third wiring constitute a pair of terminals.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: January 2, 2018
    Assignee: SMK Corporation
    Inventors: Ryuji Ikeda, Masayuki Nagumo, Ryo Okamura, Kensaku Mizumoto
  • Publication number: 20170277298
    Abstract: An object of the present disclosure is to improve visibility while suppressing an impedance of an antenna pattern formed on a conductive film. In a film base material on which an antenna pattern for near field communication is formed, the antenna pattern is formed of a metal having excellent conductivity. The antenna pattern is formed into a loop line shape with three to five turns and has a length of 200 to 500 mm, an interval between adjacent loop lines of 200 to 400 ?m, and a line width of 4 to 20 ?m. The thickness of the antenna pattern is set to a value calculated by the following Formula (1) so that the impedance at a maximum load becomes equal to or less than 50?.
    Type: Application
    Filed: September 9, 2016
    Publication date: September 28, 2017
    Inventors: Ryuji IKEDA, Masayuki NAGUMO, Ryo OKAMURA, Kensaku MIZUMOTO
  • Publication number: 20170279198
    Abstract: The antenna-equipped film includes: a film base; an antenna pattern formed on the film base; and a number-of-winding setting circuit connected to the antenna pattern. The antenna pattern is formed as a plurality of linear loops. The number-of-winding setting circuit includes: first wiring connected to the antenna pattern to constitute a spiral circuit; jumper switches intervening by two each in each lap of the spiral circuit; second wiring connected to the end portion of the innermost lap of the spiral circuit and a position between the two jumper switches in each lap excluding the innermost lap and the outermost lap of the spiral circuit; third wiring connected in common to the other ends of the second wiring; and jumper switches intervening in the second wiring. The outer end of the spiral circuit and the third wiring constitute a pair of terminals.
    Type: Application
    Filed: August 26, 2016
    Publication date: September 28, 2017
    Inventors: Ryuji IKEDA, Masayuki NAGUMO, Ryo OKAMURA, Kensaku MIZUMOTO
  • Publication number: 20170189651
    Abstract: An introducer having a dilator positioned in a sheath is inserted into a first blood vessel and, thereafter, only the dilator tube is drawn out of the first blood vessel and the sheath while the sheath remains in the first blood vessel. A diagnostic instrument having an outer diameter smaller than a maximum outer diameter permitting insertion into the sheath tube is inserted into the second blood vessel, and a stenosis of the second blood vessel is diagnosed. While keeping the sheath indwelling in the first blood vessel, a therapeutic instrument or a catheter permitting the therapeutic instrument to be inserted therein, which therapeutic instrument or catheter has a maximum outer diameter permitting insertion into the sheath tube, is inserted into the second blood vessel, and the second blood vessel is treated.
    Type: Application
    Filed: March 20, 2017
    Publication date: July 6, 2017
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Naofumi OKAJIMA, Ryo OKAMURA
  • Patent number: 9649035
    Abstract: An introducer having a dilator positioned in a sheath is inserted into a first artery and, thereafter, only the dilator tube is drawn out of the first artery and the sheath while the sheath remains in the first artery. A diagnostic instrument having an outer diameter smaller than a maximum outer diameter permitting insertion into the sheath tube is inserted into the second artery, and a stenosis of the second artery is diagnosed. While keeping the sheath indwelling in the first artery, a therapeutic instrument or a catheter permitting the therapeutic instrument to be inserted therein, which therapeutic instrument or catheter has a maximum outer diameter permitting insertion into the sheath tube, is inserted into the second artery, and the second artery is treated.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: May 16, 2017
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Naofumi Okajima, Ryo Okamura