Patents by Inventor Takuo Yokota
Takuo Yokota 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).
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Patent number: 10092307Abstract: A tissue grasping tool includes: a longitudinal-axis member; a first member and second member; a manipulation member; a first wire-shaped member protruding from the first member and being formed a first loop; and a second wire-shaped member protruding from the second member and being formed a second loop; the first wire-shaped member and the second wire-shaped member extend in a direction which gradually approaches with each other as it goes toward the distal side from a proximal side of the first and second loops; in a state of which the first member and the second member come close with each other, the second wire-shaped member passes through an inside of the first loop; and a distance between distal end portions of the first and second loops is increased according to an operation in which the first member and the second member approach.Type: GrantFiled: July 8, 2016Date of Patent: October 9, 2018Assignee: OLYMPUS CORPORATIONInventor: Takuo Yokota
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Patent number: 10071231Abstract: 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: GrantFiled: May 5, 2017Date of Patent: September 11, 2018Assignee: OLYMPUS CORPORATIONInventors: Takuo Yokota, Rei Matsunaga
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Patent number: 9974556Abstract: 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: GrantFiled: October 29, 2014Date of Patent: May 22, 2018Assignee: OLYMPUS CORPORATIONInventors: Takuo Yokota, Rei Matsunaga, Kunihide Kaji
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Patent number: 9757103Abstract: 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: GrantFiled: October 29, 2014Date of Patent: September 12, 2017Assignee: OLYMPUS CORPORATIONInventors: Takuo Yokota, Rei Matsunaga, Kunihide Kaji
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Publication number: 20170246431Abstract: 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: ApplicationFiled: May 15, 2017Publication date: August 31, 2017Applicant: OLYMPUS CORPORATIONInventors: Takuo YOKOTA, Masatoshi SATO, Rei MATSUNAGA
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Publication number: 20170232237Abstract: 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: ApplicationFiled: May 5, 2017Publication date: August 17, 2017Applicant: OLYMPUS CORPORATIONInventors: Takuo YOKOTA, Rei MATSUNAGA
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Publication number: 20160317165Abstract: A tissue grasping tool includes: a longitudinal-axis member; a first member and second member; a manipulation member; a first wire-shaped member protruding from the first member and being formed a first loop; and a second wire-shaped member protruding from the second member and being formed a second loop; the first wire-shaped member and the second wire-shaped member extend in a direction which gradually approaches with each other as it goes toward the distal side from a proximal side of the first and second loops; in a state of which the first member and the second member come close with each other, the second wire-shaped member passes through an inside of the first loop; and a distance between distal end portions of the first and second loops is increased according to an operation in which the first member and the second member approach.Type: ApplicationFiled: July 8, 2016Publication date: November 3, 2016Applicant: OLYMPUS CORPORATIONInventor: Takuo YOKOTA
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Patent number: 9463039Abstract: An endoscopic device includes a longitudinal member, a pair of jaws installed at a distal end of the longitudinal member and configured to be freely opened and closed, a first grasping member supported by a first jaw of the pair of jaws, a second grasping member supported by a second jaw of the pair of jaws, the second body having a wire shape, flexibility, and being curved in a loop shape, a long operating transmission member having a distal end portion connected to the pair of jaws and installed to advance and retreat along a longitudinal axis of the longitudinal member, and an open-close operating portion installed at a proximal end portion of the operating transmission member and configured to be manipulated to open and close the pair of jaws.Type: GrantFiled: June 16, 2014Date of Patent: October 11, 2016Assignee: OLYMPUS CORPORATIONInventors: Noriko Kuroda, Kunihide Kaji, Takuo Yokota, Nobuko Matsuo, Takayasu Mikkaichi, Hiroko Sakamoto, Masatoshi Sato, Ryuhei Shimada, Satoko Suzuki
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Patent number: 9433430Abstract: An endoscopic device includes a longitudinal member, a pair of jaws installed at a distal end of the longitudinal member and configured to be freely opened and closed, a first grasping member supported by a first jaw of the pair of jaws, a second grasping member supported by a second jaw of the pair of jaws, the second body having a wire shape, flexibility, and being curved in a loop shape, a long operating transmission member having a distal end portion connected to the pair of jaws and installed to advance and retreat along a longitudinal axis of the longitudinal member, and an open-close operating portion installed at a proximal end portion of the operating transmission member and configured to be manipulated to open and close the pair of jaws.Type: GrantFiled: June 16, 2014Date of Patent: September 6, 2016Assignee: OLYMPUS CORPORATIONInventors: Noriko Kuroda, Kunihide Kaji, Takuo Yokota, Nobuko Matsuo, Takayasu Mikkaichi, Hiroko Sakamoto, Masatoshi Sato, Ryuhei Shimada, Satoko Suzuki
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Publication number: 20160121083Abstract: 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: ApplicationFiled: October 29, 2014Publication date: May 5, 2016Inventors: Takuo YOKOTA, Rei MATSUNAGA, Kunihide KAJI
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Publication number: 20160121084Abstract: 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: ApplicationFiled: October 29, 2014Publication date: May 5, 2016Inventors: Takuo YOKOTA, Rei MATSUNAGA, Kunihide KAJI
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Patent number: 9155551Abstract: A treatment instrument has a longitudinal-axis member having a longitudinal axis, a curved portion formed on a distal end side of the longitudinal-axis member, a lumen formed along the longitudinal axis of the longitudinal-axis member, and a through hole that communicates with the lumen, and opens toward the inner side of a curve of the curved portion when the curved portion is curved.Type: GrantFiled: April 8, 2013Date of Patent: October 13, 2015Assignee: OLYMPUS CORPORATIONInventors: Noriko Kuroda, Ken Yamatani, Takuo Yokota, Masatoshi Tonomura
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Publication number: 20150032119Abstract: An endoscopic device includes a longitudinal member, a pair of jaws installed at a distal end of the longitudinal member and configured to be freely opened and closed, a first grasping member supported by a first jaw of the pair of jaws, a second grasping member supported by a second jaw of the pair of jaws, the second body having a wire shape, flexibility, and being curved in a loop shape, a long operating transmission member having a distal end portion connected to the pair of jaws and installed to advance and retreat along a longitudinal axis of the longitudinal member, and an open-close operating portion installed at a proximal end portion of the operating transmission member and configured to be manipulated to open and close the pair of jaws.Type: ApplicationFiled: June 16, 2014Publication date: January 29, 2015Inventors: Noriko KURODA, Kunihide KAJI, Takuo YOKOTA, Nobuko MATSUO, Takayasu MIKKAICHI, Hiroko SAKAMOTO, Masatoshi SATO, Ryuhei SHIMADA, Satoko SUZUKI
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Patent number: 8758266Abstract: A treatment tool for an endoscope includes a sheath member, a treatment part, an operating part body, an operating wire, a slider, and a force limiting part. When a predetermined force is applied to the force limiting part with advance and refraction of the slider, the force limiting part engages a wall surface of the insertion passage of the operating wire and fixes the slider by being compressed in an advance-and-retraction direction and expanding in a radial direction.Type: GrantFiled: August 2, 2012Date of Patent: June 24, 2014Assignee: Olympus Medical Systems Corp.Inventors: Keita Suzuki, Masatoshi Sato, Takuo Yokota, Shunsuke Motosugi
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Publication number: 20130046338Abstract: A treatment tool for an endoscope includes a sheath member, a treatment part, an operating part body, an operating wire, a slider, and a force limiting part. When a predetermined force is applied to the force limiting part with advance and refraction of the slider, the force limiting part engages a wall surface of the insertion passage of the operating wire and fixes the slider by being compressed in an advance-and-retraction direction and expanding in a radial direction.Type: ApplicationFiled: August 2, 2012Publication date: February 21, 2013Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Keita SUZUKI, Masatoshi SATO, Takuo YOKOTA, Shunsuke MOTOSUGI
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Publication number: 20120215127Abstract: A flow sensor measures an amount of flow of a medium flowing inside a tubular organ of an organism by mounting a flexible substrate, upon which heaters are formed, inside a tube disposed in a manner so as to follow the tubular organ of the organism through which the medium is flowing, and by detecting a state of heat quantity generated from the heaters on the mounted flexible substrate being transmitted to the medium. In the flow sensor, at least the two heaters, formed upon the flexible substrate, respectively form symmetrical structures with identical heating capabilities under identical conditions, and the linear members, which supply power to the heaters from outside the organism, form symmetrical structures with identical heating capabilities under identical conditions, thereby allowing temperature distribution of the heaters and linear members inside the tube to he symmetrical. The plurality of linear members protrude in a manner so as to intersect from inside the tubular organ to outside the organism.Type: ApplicationFiled: August 10, 2010Publication date: August 23, 2012Applicant: National University Corporation Nagoya UniversityInventors: Mitsuhiro Shikida, Tsutomu Kawabe, Miyoko Matsushima, Takuo Yokota, Satoshi Iwai, Naoyuki Matsunaga