Patents by Inventor Kenichi Hazama

Kenichi Hazama 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: 11083467
    Abstract: A hemostatic device includes a band for wrapping around a puncture site of a wrist, a mechanism for securing the band to the wrist in a wrapped state, an inflatable portion connected to the band and inflated by being injected with air, a tube body that communicates between an inflatable space of the inflatable portion and an outside, and a cover portion that covers the tube body in the inflatable portion, in which the tube body has a hole portion that opens in the inflatable portion, the cover portion has a communication portion that is disposed to cover the hole portion and allows communication between the hole portion and the inflatable portion by being positioned to overlap the hole portion, and the tube body is movable relative to the cover portion so that a positional relation between the communication portion and the hole portion is controllable.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: August 10, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Kenichi Hazama, Ryosuke Maeda, Junichi Kobayashi
  • Patent number: 11065010
    Abstract: A hemostatic device includes a band for wrapping around a puncture site of a wrist, a mechanism for securing the band to the wrist in a wrapped state, an inflatable portion connected to the band and inflated by being injected with gas, an injection part which is elastically transformable and is capable of injecting air into the inflatable portion, and a tube body that connects an inflatable space of the inflatable portion and a housing space of the injection part to each other, in which the tube body has a hole portion opening in the inflatable portion and a cover portion disposed on the tube body to cover the hole portion, and the cover portion has a communication portion that allows communication between the inflatable space and the housing space by air discharged from the hole portion when air is injected into the inflatable portion from the injection part.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: July 20, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Ryosuke Maeda, Kenichi Hazama, Junichi Kobayashi
  • Patent number: 10980546
    Abstract: A hemostatic device including a band that is wrapped around a limb of a living body at a site of the living body where bleeding is to be stopped and an inflatable portion which is inflated by injection of gas to cause the inflatable portion to press the site where bleeding is to be stopped. The hemostatic device includes an injection part that injects gas into the interior of the inflatable portion. The injection part includes a hole penetrating the injection part and communicating the housing space with outside environment. The hemostatic device includes a first support plate and a second support plate positioned adjacent one another along the longitudinal direction of the band. The second support plate is movably connected to the first support plate. The inflatable portion is on the first support plate and the injection part is on the second support plate.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: April 20, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Kenichi Hazama, Teppei Hayashi, Ryosuke Maeda, Junichi Kobayashi, Masako Miyashita, Satoshi Wada
  • Patent number: 10939919
    Abstract: A hemostatic device has a band for being wrapped around a puncture site P of a wrist W, securing means for securing the band in a state where the band is wrapped around the wrist, an inflation portion that interlocks with the band, and that is inflated by injecting gas, and an injection portion that can inject gas into the inflation portion. The injection portion is disposed in the band, and is foldable so as to decrease a space formed inside the injection portion. The hemostatic device can thus inflate an inflation portion without using a separate dedicated instrument, which can prevent a hemostasis-requiring site from being unintentionally compressed more than necessary.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 9, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Kenichi Hazama, Ryosuke Maeda
  • Patent number: 10893872
    Abstract: A hemostatic device includes a band configured to be wrapped around a wrist, and to be secured in a state where the band is wrapped around the wrist, and an inflatable portion that interlocks with the band and that is inflated by injecting gas. The inflatable portion has a first region formed of a thermoplastic material and a second region formed of a thermosetting elastomer whose gas permeability is higher than that of the thermoplastic material. The band has an interlock region which is formed of the thermoplastic material, and with which the inflatable portion interlocks. The first region of the inflatable portion is welded to the interlock region of the band. The compressing force of the inflatable portion can be reduced over time to inhibit vascular occlusion.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: January 19, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi Hazama
  • Patent number: 10869675
    Abstract: A hemostatic device has a band for being wrapped around a puncture site of a wrist, securing means for securing the band in a state where the band is wrapped around the wrist, and an inflation portion that interlocks with the band, and that is inflated by injecting gas. The inflation portion includes a first region which stretches when the gas is injected into the inflation portion, and a second region which is less likely to stretch compared to the first region and which is formed of a rigid material. The second region has a micropore which discharges the gas contained in the inflation portion with the lapse of time, in a state where the inflation portion is inflated.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: December 22, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi Hazama
  • Patent number: 10779840
    Abstract: A hemostatic device can inflate an inflatable portion without using a separate dedicated instrument, can reduce an unpleasant feeling of a wearer, and can prevent a site where bleeding is to be stopped from being unintentionally and unnecessarily compressed. The hemostatic device has a band for being wrapped around a limb, an inflatable portion that is inflated by injecting gas, an injection part that is configured to inject gas into the inflatable portion, and a flow route that permits communication between the inflatable portion and the injection part. The flow route includes a backflow preventer which prevents gas from flowing out to the injection part from the inflatable portion. The injection part is located on the band, and includes holes which penetrate the injection part in a direction intersecting a perpendicular line to a region of the band where the injection part is located.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: September 22, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi Hazama
  • Patent number: 10575859
    Abstract: A hemostatic device includes a band for being wrapped around a wrist W, securing means for securing the band in a state where the band is wrapped around the wrist, and an inflation portion disposed on an inner peripheral surface of the band, and that is inflated by injecting gas. The inflation portion has a first layer and a second layer which covers an outer surface of the first layer. The first layer is formed of a material which has a larger gas permeation amount per unit area than a material for forming the second layer. The second layer has gap portions which can expose the outer surface of the first layer outward from the second layer in a state where the inflation portion is inflated.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 3, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi Hazama
  • Publication number: 20190150938
    Abstract: A hemostatic device including a band that is wrapped around a limb of a living body at a site of the living body where bleeding is to be stopped and an inflatable portion which is inflated by injection of gas to cause the inflatable portion to press the site where bleeding is to be stopped. The hemostatic device includes an injection part that injects gas into the interior of the inflatable portion. The injection part includes a hole penetrating the injection part and communicating the housing space with outside environment. The hemostatic device includes a first support plate and a second support plate positioned adjacent one another along the longitudinal direction of the band. The second support plate is movably connected to the first support plate. The inflatable portion is on the first support plate and the injection part is on the second support plate.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 23, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Kenichi HAZAMA, Teppei HAYASHI, Ryosuke MAEDA, Junichi KOBAYASHI, Masako MIYASHITA, Satoshi WADA
  • Publication number: 20190133605
    Abstract: A hemostatic device includes a band for wrapping around a puncture site of a wrist, a mechanism for securing the band to the wrist in a wrapped state, an inflatable portion connected to the band and inflated by being injected with air, a tube body that communicates between an inflatable space of the inflatable portion and an outside, and a cover portion that covers the tube body in the inflatable portion, in which the tube body has a hole portion that opens in the inflatable portion, the cover portion has a communication portion that is disposed to cover the hole portion and allows communication between the hole portion and the inflatable portion by being positioned to overlap the hole portion, and the tube body is movable relative to the cover portion so that a positional relation between the communication portion and the hole portion is controllable.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Kenichi HAZAMA, Ryosuke MAEDA, Junichi KOBAYASHI
  • Publication number: 20190133604
    Abstract: A hemostatic device includes a band for wrapping around a puncture site of a wrist , a mechanism for securing the band to the wrist in a wrapped state, an inflatable portion connected to the band and inflated by being injected with gas, an injection part which is elastically transformable and is capable of injecting air into the inflatable portion, and a tube body that connects an inflatable space of the inflatable portion and a housing space of the injection part to each other, in which the tube body has a hole portion opening in the inflatable portion and a cover portion disposed on the tube body to cover the hole portion, and the cover portion has a communication portion that allows communication between the inflatable space and the housing space by air discharged from the hole portion when air is injected into the inflatable portion from the injection part.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Ryosuke MAEDA, Kenichi HAZAMA, Junichi KOBAYASHI
  • Publication number: 20190133606
    Abstract: A hemostatic device is disclosed, which capable of favorably maintaining strength of an inflatable portion and reducing a pressing force acting on a site where bleeding is to be stopped over time to such an extent that vascular occlusion can be prevented without operation by a doctor or a nurse. The hemostatic device includes a band for wrapping around a wrist, a fastener or means for securing the band to the wrist in a wrapped state, and an inflatable portion connected to the band and inflated by being injected with a gas, in which the inflatable portion includes a resin layer made of a resin material, a particulate portion dispersed in the resin layer, and a space portion formed around the particulate portion. The space portion contains gas dispersed in the resin layer so as not to communicate between an inner surface and an outer surface of the resin layer.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 9, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi HAZAMA
  • Publication number: 20190133607
    Abstract: A hemostatic device is disclosed, which capable of favorably keeping strength of an inflatable portion and easily adjusting a discharge speed of gas. The hemostatic device includes a band for wrapping around a wrist, a fastener or means for securing that secures the band to the wrist in a wrapped state, an inflatable portion connected to the band and inflated by being injected with gas, and a filter member that controls discharge of gas injected into the inflatable portion, in which the band has one or more hole portions penetrating between an inner surface and an outer surface of the band, the inflatable portion is disposed to cover the hole portions on the inner surface of the band, and the filter member is disposed on the band to block the hole portions and controls discharge of gas from the hole portions.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 9, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi HAZAMA
  • Patent number: 10271939
    Abstract: Provided is a treatment method and medical apparatus for preventing an object that becomes a causative agent causing pathogenesis of aspiration pneumonitis from invading a lung The treatment method includes a disposing step of disposing a first instrument, which allows the object that becomes a causative agent of aspiration pneumonitis to move from an esophagus to a stomach and suppresses movement of the object from the stomach to a larynx, in the esophagus and disposing a second instrument, which suppresses the object from invading the lung, in at least the larynx.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: April 30, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Kenichi Hazama, Yoshiyuki Hara, Junichi Kobayashi, Kenji Watanabe
  • Publication number: 20190046214
    Abstract: A hemostatic device can inflate an inflatable portion without using a separate dedicated instrument, can reduce an unpleasant feeling of a wearer, and can prevent a site where bleeding is to be stopped from being unintentionally and unnecessarily compressed. The hemostatic device has a band for being wrapped around a limb, an inflatable portion that is inflated by injecting gas, an injection part that is configured to inject gas into the inflatable portion, and a flow route that permits communication between the inflatable portion and the injection part. The flow route includes a backflow preventer which prevents gas from flowing out to the injection part from the inflatable portion. The injection part is located on the band, and includes holes which penetrate the injection part in a direction intersecting a perpendicular line to a region of the band where the injection part is located.
    Type: Application
    Filed: September 21, 2018
    Publication date: February 14, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi HAZAMA
  • Publication number: 20190021742
    Abstract: A hemostatic device includes a band configured to be wrapped around a wrist, and to be secured in a state where the band is wrapped around the wrist, and an inflatable portion that interlocks with the band and that is inflated by injecting gas. The inflatable portion has a first region formed of a thermoplastic material and a second region formed of a thermosetting elastomer whose gas permeability is higher than that of the thermoplastic material. The band has an interlock region which is formed of the thermoplastic material, and with which the inflatable portion interlocks. The first region of the inflatable portion is welded to the interlock region of the band. The compressing force of the inflatable portion can be reduced over time to inhibit vascular occlusion.
    Type: Application
    Filed: September 21, 2018
    Publication date: January 24, 2019
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi HAZAMA
  • Publication number: 20180008282
    Abstract: A hemostatic device has a band for being wrapped around a puncture site P of a wrist W, securing means for securing the band in a state where the band is wrapped around the wrist, an inflation portion that interlocks with the band, and that is inflated by injecting gas, and an injection portion that can inject gas into the inflation portion. The injection portion is disposed in the band, and is foldable so as to decrease a space formed inside the injection portion. The hemostatic device can thus inflate an inflation portion without using a separate dedicated instrument, which can prevent a hemostasis-requiring site from being unintentionally compressed more than necessary.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 11, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Kenichi HAZAMA, Ryosuke MAEDA
  • Publication number: 20180008283
    Abstract: A hemostatic device includes a band for being wrapped around a wrist W, securing means for securing the band in a state where the band is wrapped around the wrist, and an inflation portion disposed on an inner peripheral surface of the band, and that is inflated by injecting gas. The inflation portion has a first layer and a second layer which covers an outer surface of the first layer. The first layer is formed of a material which has a larger gas permeation amount per unit area than a material for forming the second layer. The second layer has gap portions which can expose the outer surface of the first layer outward from the second layer in a state where the inflation portion is inflated.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 11, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi HAZAMA
  • Publication number: 20180008281
    Abstract: A hemostatic device has a band for being wrapped around a puncture site of a wrist, securing means for securing the band in a state where the band is wrapped around the wrist, and an inflation portion that interlocks with the band, and that is inflated by injecting gas. The inflation portion includes a first region which stretches when the gas is injected into the inflation portion, and a second region which is less likely to stretch compared to the first region and which is formed of a rigid material. The second region has a micropore which discharges the gas contained in the inflation portion with the lapse of time, in a state where the inflation portion is inflated.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 11, 2018
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: Kenichi HAZAMA
  • Publication number: 20170224465
    Abstract: Provided is a treatment method and medical apparatus for preventing an object that becomes a causative agent causing pathogenesis of aspiration pneumonitis from invading a lung The treatment method includes a disposing step of disposing a first instrument, which allows the object that becomes a causative agent of aspiration pneumonitis to move from an esophagus to a stomach and suppresses movement of the object from the stomach to a larynx, in the esophagus and disposing a second instrument, which suppresses the object from invading the lung, in at least the larynx.
    Type: Application
    Filed: February 3, 2017
    Publication date: August 10, 2017
    Inventors: Kenichi HAZAMA, Yoshiyuki HARA, Junichi KOBAYASHI, Kenji WATANABE