Patents by Inventor Yoichiro Iwase

Yoichiro Iwase 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: 10967134
    Abstract: A needle tube having a needle tip for puncturing skin; a needle hub; and a fluid-draining portion for enabling draining of a medicine. The needle hub includes: a retention part (first member) for retaining the needle tube; an insertion part into which the output portion of a syringe is inserted; and a flange-like skin contact portion that is disposed in a manner so as to cover an area surrounding the needle tube and makes contact with and/or faces the skin when a living body is punctured with the needle tube. The fluid-draining portion is disposed in the skin contact portion of the needle hub and enables a user to drain the medicine that has spilled when removing air and is held in the skin contact portion.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 6, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Yoichiro Iwase, Junichi Ogawa, Kouichi Tachikawa
  • Publication number: 20210060254
    Abstract: A hollow medical needle is disclosed which includes: a hub part having an inner cavity connectable to a syringe; and a puncture part extending out toward an axial distal-end side of the hub part, by forming, at a distal end of the hub part, a puncture index part that includes a step perpendicular to an axial direction and is visible when abutting against a rubber stopper when the rubber stopper of a vial container is punctured by the puncture part, a position of an insertion terminal end substantially coincident with an outer surface of the rubber stopper is set at a fixed position when the puncture part is punctured into the rubber stopper.
    Type: Application
    Filed: November 11, 2020
    Publication date: March 4, 2021
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Minami MAEKAWA, Eriko ITO, Yoichiro IWASE, Toshiaki TAKAKI
  • Publication number: 20210001049
    Abstract: A syringe assembly includes a plate-shaped seal member that seals a distal opening of a distal nozzle portion of a syringe; and a tubular cover member. The cover member has a base portion and a mounting portion. The mounting portion has two claw portions, two first column portions arranged on both sides of one of the two claw portions, and two second column portions arranged on both sides of the other of the two claw portions. An outer peripheral portion of the mounting portion has two outer peripheral notch portions. An inner peripheral portion of the mounting portion has two inner peripheral recessed portions.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Manabu ARINOBE, Yusuke HYAKKAN, Eri OYA, Taeko MASUDA, Junichi OGAWA, Yoichiro IWASE
  • Patent number: 10702653
    Abstract: A syringe holder includes: a barrel body that holds a syringe; a holder opening; deformation promoting portions; and radial movement-restricting portions. The radial movement-restricting portions are provided close to the deformation promoting portions. Being brought into contact with first portions, the radial movement-restricting portions restrict the syringe from moving in a radial direction with respect to the barrel body.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: July 7, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Junichi Ogawa, Yoichiro Iwase, Kazunori Koiwai
  • Publication number: 20200206434
    Abstract: There are provided an intradermal needle, a packaged article, and an injection device. The intradermal needle includes: a tubular needle that has a needle tip capable of puncturing a living body; a needle hub that holds the tubular needle; a flange part that extends in a flange shape from the needle hub; and a ring projection that extends toward a leading end of the flange part and is formed in a cylindrical shape to surround the tubular needle. The flange part has a cut portion formed by partially cutting to achieve downsizing of the flange part.
    Type: Application
    Filed: March 11, 2020
    Publication date: July 2, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Minami MAEKAWA, Yoichiro IWASE, Eiji KAWAMOTO, Kentaro NAKAJIMA
  • Publication number: 20200206435
    Abstract: A needle assembly is disclosed, which includes a needle protection member and a rotor. The rotor has a rotor body and a restriction portion. When the needle protection member in the initial state is displaced from the protection position to a use position and returns to a protection position, the restriction portion is displaced from the initial position to the lock position by the rotation of the rotor body with respect to the needle protection member. A needle hub has a displacement prevention portion that prevents the needle protection member from being displaced from the protection position to the use position again by contacting the restriction portion at the lock position.
    Type: Application
    Filed: March 11, 2020
    Publication date: July 2, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Kentaro NAKAJIMA, Yoichiro IWASE
  • Publication number: 20200206432
    Abstract: In an intradermal needle including a tubular needle that can be punctured into a living body, a packaging article, and an injection device, a pivotable protector is provided to a wide diameter part. The protector has an arm that can pivot around an axle of pivoting, and a lid. The pivoting axle part is provided to the wide diameter part, and the lid is formed to give a width smaller than a diameter of the wide diameter part. The arm keeps the lid in the open position away from the pivoting axle part and closer to an axis of the needle hub.
    Type: Application
    Filed: March 11, 2020
    Publication date: July 2, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Kentaro NAKAJIMA, Yoichiro IWASE
  • Publication number: 20200206433
    Abstract: Provided are an intradermal needle having a protector that is movable from an open position near a needle hub to a closed position where a needle tip is covered, a packaged article, and an injection device. The protector has an arm that is supported in a freely pivotable manner by an axle pin positioned on the base end side of the wide diameter part of the intradermal needle, and a lid supported by the arm. With the axle of pivoting of the protector positioned near the needle hub, the lid may be housed compactly near the needle hub when the protector is in the open position.
    Type: Application
    Filed: March 11, 2020
    Publication date: July 2, 2020
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Kentaro NAKAJIMA, Yoichiro IWASE
  • Patent number: 10688252
    Abstract: An injection needle assembly includes: a needle tube; a needle hub holding the needle tube; a protector movable between a first position at which a needle tip of the needle tube is covered and a second position at which the needle tip of the needle tube is exposed; a biasing member configured to bias the protector toward the needle tip of the needle tube along an axial direction; a retaining member that supports the protector such that the protector is movable along the axial direction, wherein an abutment piece of the protector abuts on the retaining member when the protector is moved to the first position; and a restriction mechanism configured such that, after the protector has moved from the first position to the second position and back to the first position, the restriction mechanism restricts the protector from moving from the first position to the second position again.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 23, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Yoichiro Iwase
  • Patent number: 10413681
    Abstract: A syringe for injecting a drug solution into an upper layer of skin includes an injection needle having a needle hole communicating from a needle tip to a needle proximal end, the injection needle having a blade face at the needle tip; and a needle hub having a distal end portion and a proximal end portion, the needle hub holding the injection needle at the distal end portion. The needle hub has a needle tip side end face, and the needle tip protrudes from the needle tip side end face. A protruding needle length of the needle tip from the needle tip side end face is 1.15 mm±0.1 mm, and a blade face length of the blade face along an axis of the injection needle is 0.60 mm±0.15 mm.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: September 17, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Yoichiro Iwase, Kazunori Koiwai
  • Patent number: 10413680
    Abstract: A needle assembly includes: a needle comprising a hollow needle tube, a needle tip at a distal end of the hollow needle tube, and a cutting face disposed adjacent to the needle tip; and a needle hub that includes a tip and a base end, and holds the needle at the needle tip. The needle hub includes a needle tip side end face from which the needle tip projects. An outer diameter of the needle is within a range of 0.15 mm to 0.20 mm, inclusive. A projection needle length extending from the needle tip side end face to the needle tip is within a range of 0.50 mm to 1.25 mm, inclusive. A needle body length extending from the needle tip side end face to a proximal end of the cutting face in within a range of 0.10 mm to 0.70 mm, inclusive.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: September 17, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Sakiko Shimizu, Sayaka Omori, Kazunori Koiwai, Yoichiro Iwase
  • Patent number: 10406289
    Abstract: A drug injection syringe includes an injection needle assembly and a syringe body. The injection needle assembly includes an injection needle, a needle hub, an elastic body, and a fitting sleeve. The fitting sleeve accommodates the needle hub and the elastic body and has a fitting hole formed in a female taper shape. The syringe body includes an outer tube and a drug discharge tube formed in a male taper shape. The syringe body is attached to the injection needle assembly by pushing the drug discharge tube into the fitting hole by a press fitting. The elastic body couples the drug discharge tube and the injection needle in a liquid-tight manner by compressively deforming, due to the press fitting, at a protruding portion disposed on a periphery of the pocket and stretching against an inner wall of the fitting hole.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: September 10, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Yoichiro Iwase
  • Patent number: 10398851
    Abstract: A method of using a medicine injection device including a syringe filled with a medicine; a needle tube having a needle tip for puncturing the skin; a flange-like skin contact portion that is disposed in a manner so as to cover an area surrounding the needle tube and makes contact with and/or faces the skin when the living body is punctured with the needle tube; and an absorption part that is disposed in the skin contact portion of the needle hub. The method includes removing air from the medicine injection device prior to injection of the medicine, whereby medicine spilled from the needle tip is caught in the skin contact portion; the absorption part absorbing the spilled medicine staying in the skin contact portion; positioning the skin contact portion adjacent the skin; puncturing the skin with the needle tip; and injecting medicine from the needle tip into the skin.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: September 3, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Yoichiro Iwase, Junichi Ogawa, Kouichi Tachikawa
  • Patent number: 10335551
    Abstract: A needle assembly includes: a retaining portion; and an elastic member that includes a close contact portion that closely contacts and retains the needle tube such that the needle tube protrudes toward a fitting opening, and a deformation portion that extends from the close contact portion toward the fitting opening and is configured to deform when the drug ejection portion comes into contact with the elastic member, and which is provided in a fitting portion. Further, the length of the deformation portion is in a range of 35% or more and 50% or less with respect to the length of the elastic member, and the length of a portion of the needle tube which protrudes from the close contact portion toward the fitting portion is in a range of 45% or more and 245% or less with respect to the deformation portion.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: July 2, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Yoichiro Iwase, Kazunori Koiwai
  • Patent number: 10034981
    Abstract: This syringe has an outer tube, a gasket, and a pusher. The pusher is provided with: a tubular holding part which covers at least a part of an outer surface of the outer tube and is movable relative to the outer tube in the longitudinal direction thereof; and a pressure part which is connected with the holding part, is inserted into the outer tube, and moves the gasket to the distal side of the outer tube by distally a movement of the holding part relative to the outer tube. In addition, between the holding part and the outer tube, a guide part is provided which guides the movement of the holding part relative to the outer tube.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 31, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Kouichi Tachikawa, Yoichiro Iwase, Hirotaka Ohashi, Junichi Ogawa
  • Patent number: 9913948
    Abstract: An injection needle assembly includes an injection needle, a fitting portion, and a hub. The fitting portion is formed into a cylindrical shape and has one end serving as a fitting opening. The fitting portion includes a female taper shape in which an inner diameter of a cylindrical hole of the fitting portion becomes smaller toward an inner side. The hub includes the fitting portion for holding the injection needle. The injection needle assembly is used such that the female taper shape of the fitting portion is fitted to a drug discharge tube, which has a male taper shape in which an outer diameter of a cylinder becomes smaller toward a tip. When the male taper shape of the drug discharge tube has a taper ratio of N/100, the female taper shape of the fitting portion 12 is formed to have a taper ratio of M/100, where M>N.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: March 13, 2018
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Yoichiro Iwase, Takayuki Yokota, Hisao Yabe
  • Publication number: 20180056010
    Abstract: A needle tube having a needle tip for puncturing skin; a needle hub; and a fluid-draining portion for enabling draining of a medicine. The needle hub includes: a retention part (first member) for retaining the needle tube; an insertion part into which the output portion of a syringe is inserted; and a flange-like skin contact portion that is disposed in a manner so as to cover an area surrounding the needle tube and makes contact with and/or faces the skin when a living body is punctured with the needle tube. The fluid-draining portion is disposed in the skin contact portion of the needle hub and enables a user to drain the medicine that has spilled when removing air and is held in the skin contact portion.
    Type: Application
    Filed: November 7, 2017
    Publication date: March 1, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yoichiro IWASE, Junichi OGAWA, Kouichi TACHIKAWA
  • Publication number: 20180043109
    Abstract: A method of using a medicine injection device including a syringe filled with a medicine; a needle tube having a needle tip for puncturing the skin; a flange-like skin contact portion that is disposed in a manner so as to cover an area surrounding the needle tube and makes contact with and/or faces the skin when the living body is punctured with the needle tube; and an absorption part that is disposed in the skin contact portion of the needle hub. The method includes removing air from the medicine injection device prior to injection of the medicine, whereby medicine spilled from the needle tip is caught in the skin contact portion; the absorption part absorbing the spilled medicine staying in the skin contact portion; positioning the skin contact portion adjacent the skin; puncturing the skin with the needle tip; and injecting medicine from the needle tip into the skin.
    Type: Application
    Filed: October 11, 2017
    Publication date: February 15, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yoichiro IWASE, Junichi OGAWA, Kouichi TACHIKAWA
  • Publication number: 20180015232
    Abstract: An injection needle assembly includes a needle tube, a needle hub configured to hold the needle tube, a protector, a biasing member, and a restriction mechanism. The restriction mechanism is configured such that, after the protector has moved from the first position to the second position and has further returned from the second position to the first position, the restriction member restricts the protector from moving from the first position to the second position again. At least a portion of the biasing member is disposed on a needle tip side of the restriction mechanism in the axial direction.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Yoichiro IWASE
  • Publication number: 20180015234
    Abstract: An injection needle assembly includes a needle tube, a needle hub holding the needle tube, a protector, a biasing member, a sliding groove, and a sliding protrusion. The protector is movable between a first position at which the needle tip of the needle tube is covered and a second position at which the needle tip of the needle tube is exposed. The sliding groove is located at one of the needle hub or the protector.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Yoichiro IWASE