Patents by Inventor Rei Matsunaga

Rei Matsunaga 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).

  • Publication number: 20230101766
    Abstract: A method of cholecystitis treatment according to an aspect of the present disclosure comprises a step A including contacting inner walls of a gallbladder to each other by constricting the gallbladder and a step B including maintaining the inner walls of the gallbladder contacting each other.
    Type: Application
    Filed: September 27, 2022
    Publication date: March 30, 2023
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Tomofumi KATAYAMA, Rei MATSUNAGA, Yuji KISHIMOTO, Kengo SASAKI
  • Patent number: 10888691
    Abstract: A stent delivery method includes: forming through-holes in an alimentary canal wall and a cyst wall so as to communicate with each other; passing a stent through the through-holes and placing a first expandable part in the alimentary canal and a second expandable part in the cyst; allowing the first expandable part to expand to an expanded state in the alimentary canal; and, after the expansion of the first expandable part, allowing the second expandable part to expand in the cyst while the alimentary canal wall is pressed by the first expandable part in the expanded state.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: January 12, 2021
    Assignee: OLYMPUS CORPORATION
    Inventors: Tomofumi Katayama, Rei Matsunaga, Tomohiko Mamiya
  • Publication number: 20190321605
    Abstract: A stent delivery method includes: forming through-holes in an alimentary canal wall and a cyst wall so as to communicate with each other; passing a stent through the through-holes and placing a first expandable part in the alimentary canal and a second expandable part in the cyst; allowing the first expandable part to expand to an expanded state in the alimentary canal; and, after the expansion of the first expandable part, allowing the second expandable part to expand in the cyst while the alimentary canal wall is pressed by the first expandable part in the expanded state.
    Type: Application
    Filed: April 24, 2018
    Publication date: October 24, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Tomofumi KATAYAMA, Rei MATSUNAGA, Tomohiko MAMIYA
  • Patent number: 10071231
    Abstract: A medical instrument is that the first holding portion or the second holding portion is capable of moving so that a distance between a distal end of the first holding portion and a distal end of the second holding portion changes from a first dimension which is larger than a diameter of the wire to a second dimension which is smaller than the diameter of the wire and the space is formed by the first holding portion and the second holding portion such that the wire is capable of rotating about a line connecting a first contact point where the first protrusion portion contacts with the wire with a second contact point where the second protrusion portion contacts with the wire.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: September 11, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Takuo Yokota, Rei Matsunaga
  • Patent number: 9974556
    Abstract: In a disclosed method for inserting an endoscopic device, in a state in which a guide wire is inserted through an opening of a hollow organ of a subject, the guide wire is indwelt in the hollow organ. Next, a flexible endoscope is made to approach the opening of the hollow organ. Next, inside of the body of the subject, an endoscopic device that projects from the tip of a channel of the endoscope slidably engages with the guide wire. Next, the endoscopic device is inserted into the hollow organ through the opening, along the guide wire. The guide wire that is indwelt once is subsequently used as a guide for second and subsequent insertions of endoscopic devices.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: May 22, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Takuo Yokota, Rei Matsunaga, Kunihide Kaji
  • Patent number: 9757103
    Abstract: In a method for inserting an endoscopic device, a guide wire is punctured into a subject from outside the body. A tip portion of the wire is inserted into a first hollow organ. A tip-side portion of the inserted wire is projected into a lumen of a second hollow organ that communicates with the first via an opening, from the opening. An endoscopic device is inserted through a flexible endoscope and pushed into the second hollow organ. A tip portion of the device is locked onto the tip-side portion of the wire projecting into the second hollow organ. A portion of the wire outside the body of the subject is held and is tugged outside of the body. The tip portion of the device is thus pulled into the first hollow organ from the second, via the opening. Therefore, the endoscopic device can be led to the first hollow organ.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: September 12, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Takuo Yokota, Rei Matsunaga, Kunihide Kaji
  • Publication number: 20170246431
    Abstract: A medical instrument, which is capable of holding a wire, includes: a sheath which has a center axis in a longitudinal direction from a distal end toward a proximal end thereof and includes in a distal end surface of the distal end a first contact area capable of being in contact with the wire and a second contact area coming in contact with the wire and provided on a proximal end side beyond the distal end with respect to the first contact area; and a holding portion which is advanceable and retractable in a lumen of the sheath and is retracted into the lumen of the sheath so that the wire is pressed to the first contact area and the second contact area and the holding portion holds the wire.
    Type: Application
    Filed: May 15, 2017
    Publication date: August 31, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Takuo YOKOTA, Masatoshi SATO, Rei MATSUNAGA
  • Publication number: 20170232237
    Abstract: A medical instrument is that the first holding portion or the second holding portion is capable of moving so that a distance between a distal end of the first holding portion and a distal end of the second holding portion changes from a first dimension which is larger than a diameter of the wire to a second dimension which is smaller than the diameter of the wire and the space is formed by the first holding portion and the second holding portion such that the wire is capable of rotating about a line connecting a first contact point where the first protrusion portion contacts with the wire with a second contact point where the second protrusion portion contacts with the wire.
    Type: Application
    Filed: May 5, 2017
    Publication date: August 17, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Takuo YOKOTA, Rei MATSUNAGA
  • Publication number: 20160121083
    Abstract: In a method for inserting an endoscopic device, a guide wire is punctured into a subject from outside the body. A tip portion of the wire is inserted into a first hollow organ. A tip-side portion of the inserted wire is projected into a lumen of a second hollow organ that communicates with the first via an opening, from the opening. An endoscopic device is inserted through a flexible endoscope and pushed into the second hollow organ. A tip portion of the device is locked onto the tip-side portion of the wire projecting into the second hollow organ. A portion of the wire outside the body of the subject is held and is tugged outside of the body. The tip portion of the device is thus pulled into the first hollow organ from the second, via the opening. Therefore, the endoscopic device can be led to the first hollow organ.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 5, 2016
    Inventors: Takuo YOKOTA, Rei MATSUNAGA, Kunihide KAJI
  • Publication number: 20160121084
    Abstract: In a disclosed method for inserting an endoscopic device, in a state in which a guide wire is inserted through an opening of a hollow organ of a subject, the guide wire is indwelt in the hollow organ. Next, a flexible endoscope is made to approach the opening of the hollow organ. Next, inside of the body of the subject, an endoscopic device that projects from the tip of a channel of the endoscope slidably engages with the guide wire. Next, the endoscopic device is inserted into the hollow organ through the opening, along the guide wire. The guide wire that is indwelt once is subsequently used as a guide for second and subsequent insertions of endoscopic devices.
    Type: Application
    Filed: October 29, 2014
    Publication date: May 5, 2016
    Inventors: Takuo YOKOTA, Rei MATSUNAGA, Kunihide KAJI
  • Patent number: 9265254
    Abstract: A granular pesticidal composition which comprises a pyrazolinone compound given by the formula (1): wherein R1 represents a chlorine atom etc.; R2 represents a chlorine atom etc.; R3 represents a 1-methylethyl group etc.; and R4 represents a C1-C4 alkoxy group etc. and a salt of ligninsulfonic acid, and the amount of the salt of ligninsulfonic acid in the granular pesticidal composition is 10-60% by weight has good disintegrability in water when it is diluted with water.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: February 23, 2016
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshiro Otsubo, Rei Matsunaga, Eriko Takeko
  • Publication number: 20140350581
    Abstract: A tissue fastener production method of clamping two living tissues together by bringing the two living tissues into close contact includes the following steps: fixing one end of a wire material made of a metal to a shaft body, and winding the wire material around an outer periphery of the shaft body while twisting the wire material round an axis of the wire material, thereby forming a coil on which a predetermined force is exerted in the winding direction; heat treating the wire material to impart superelasticity thereto; and deforming the wire material to which the superelasticity is imparted in a range in which the wire material is elastically deformable, and reversing the winding direction of the coil in a direction reverse to the winding direction of the coil wound in the step of forming the coil so as to obtain an initial tension corresponding to the predetermined force.
    Type: Application
    Filed: August 12, 2014
    Publication date: November 27, 2014
    Applicant: OLYMPUS MEDICAL SYSTEMS CORPORATION
    Inventors: Rei MATSUNAGA, Masatoshi SATO, Kunihide KAJI, Shinji TAKAHASHI
  • Patent number: 8833130
    Abstract: A tissue fastener production method of clamping two living tissues together by bringing the two living tissues into close contact includes the following steps: fixing one end of a wire material made of a metal to a shaft body, and winding the wire material around an outer periphery of the shaft body while twisting the wire material round an axis of the wire material, thereby forming a coil on which a predetermined force is exerted in the winding direction; heat treating the wire material to impart superelasticity thereto; and deforming the wire material to which the superelasticity is imparted in a range in which the wire material is elastically deformable, and reversing the winding direction of the coil in a direction reverse to the winding direction of the coil wound in the step of forming the coil so as to obtain an initial tension corresponding to the predetermined force.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: September 16, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Rei Matsunaga, Masatoshi Sato, Kunihide Kaji, Shinji Takahashi
  • Patent number: 8696657
    Abstract: A treatment tool for an endoscope which is transendoscopically inserted into a body cavity for use, and which includes: a sheath at least partially composed of mixed material in which thermoplastic resin and a crosslinking promoter are mixed; a manipulation wire inserted through the aforementioned sheath so as to be capable of advancing and retracting; a treatment part attached to a first end of the aforementioned manipulation wire; and a manipulation part attached to a second end of the aforementioned manipulation wire; wherein said sheath has a crosslinked part where said thermoplastic resin is crosslinked by irradiating said mixed material with ionizing radiation, and a non-crosslinked region where said thermoplastic resin is not crosslinked.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: April 15, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Rei Matsunaga, Masahiro Ishikawa
  • Publication number: 20120215236
    Abstract: A tissue fastener production method of clamping two living tissues together by bringing the two living tissues into close contact includes the following steps: fixing one end of a wire material made of a metal to a shaft body, and winding the wire material around an outer periphery of the shaft body while twisting the wire material round an axis of the wire material, thereby forming a coil on which a predetermined force is exerted in the winding direction; heat treating the wire material to impart superelasticity thereto; and deforming the wire material to which the superelasticity is imparted in a range in which the wire material is elastically deformable, and reversing the winding direction of the coil in a direction reverse to the winding direction of the coil wound in the step of forming the coil so as to obtain an initial tension corresponding to the predetermined force.
    Type: Application
    Filed: January 25, 2012
    Publication date: August 23, 2012
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Rei MATSUNAGA, Masatoshi SATO, Kunihide KAJI, Shinji TAKAHASHI
  • Publication number: 20100160727
    Abstract: A treatment tool for an endoscope which is transendoscopically inserted into a body cavity for use, and which includes: a sheath at least partially composed of mixed material in which thermoplastic resin and a crosslinking promoter are mixed; a manipulation wire inserted through the aforementioned sheath so as to be capable of advancing and retracting; a treatment part attached to a first end of the aforementioned manipulation wire; and a manipulation part attached to a second end of the aforementioned manipulation wire; wherein said sheath has a crosslinked part where said thermoplastic resin is crosslinked by irradiating said mixed material with ionizing radiation, and a non-crosslinked region where said thermoplastic resin is not crosslinked.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Inventors: Rei Matsunaga, Masahiro Ishikawa
  • Publication number: 20060089315
    Abstract: A granular pesticidal composition which comprises a pyrazolinone compound given by the formula (1): wherein R1 represents a chlorine atom etc.; R2 represents a chlorine atom etc.; R3 represents a 1-methylethyl group etc.; and R4 represents a C1-C4 alkoxy group etc. and a salt of ligninsulfonic acid, and the amount of the salt of ligninsulfonic acid in the granular pesticidal composition is 10-60% by weight has good disintegrability in water when it is diluted with water.
    Type: Application
    Filed: October 24, 2005
    Publication date: April 27, 2006
    Inventors: Toshiro Otsubo, Rei Matsunaga, Eriko Takeko
  • Patent number: 5998391
    Abstract: There is disclosed a microbicidal composition comprising as active ingredients:(I) a dithiocarbonimide compound represented by the general formula: ##STR1## wherein Z represents CH group or nitrogen atom, R.sup.1 and R.sup.2 are the same or different and represent hydrogen atom, C.sub.1 -C.sub.6 alkyl group, halogen atom, C.sub.1 -C.sub.6 alkoxy group, C.sub.1 -C.sub.6 haloalkyl group or C.sub.1 -C.sub.6 haloalkoxy group, or R.sup.1 and R.sup.2 are taken together to form methylenedioxy group optionally substituted with fluorine atom, and(II) at least one compound selected from the group consisting of ethylenebis (dithiocarbamate) compound, copper compound, phthalimide microbicidal compound, chlorothalonil, anilide microbicidal compound, cymoxanil, dimethomorph and fosetyl.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: December 7, 1999
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Rei Matsunaga
  • Patent number: 5863932
    Abstract: There is disclosed a microbicidal composition comprising as active ingredients:(I) a dithiocarbonimide compound represented by the general formula: ##STR1## wherein Z represents CH group or nitrogen, R.sup.1 and R.sup.2 are the same or different and represent hydrogen, C.sub.1 -C.sub.6 alkyl group, halogen, C.sub.1 -C.sub.6 alkoxy group, C.sub.1 -C.sub.6 haloalkyl group or C.sub.1 -C.sub.6 haloalkoxy group, or R.sup.1 and R.sup.2 are taken together to form methylenedioxy group optionally substituted with fluorine, and(II) at least one compound selected from the group consisting of azole microbicidal compound, cyclic amine microbicidal compound, N-(3,5-dichlorophenyl)imide microbicidal compound, anilinopyrimidine microbicidal compound, cyanopyrrole microbicidal compound, benzimidazole microbicidal compound, fluazinam, thiram and sulfur.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: January 26, 1999
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Rei Matsunaga
  • Patent number: 5798384
    Abstract: There is disclosed a microbicidal composition comprising as active ingredients:(I) a dithiocarbonimide compound represented by the general formula: ##STR1## wherein Z represents CH group or nitrogen atom, R.sup.1 and R.sup.2 are the same or different and represent hydrogen atom, C.sub.1 -C.sub.6 alkyl group, halogen atom, C.sub.1 -C.sub.6 alkoxy group, C.sub.1 -C.sub.6 haloalkyl group or C.sub.1 -C.sub.6 haloalkoxy group, or R.sup.1 and R.sup.2 are taken together to form methylenedioxy group optionally substituted with fluorine atom, and(II) at least one compound selected from the group consisting of ethylenebis(dithiocarbamate) compound, copper compound, phthalimide microbicidal compound, chlorothalonil, anilide microbicidal compound, cymoxanil, dimethomorph and fosetyl.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: August 25, 1998
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Rei Matsunaga