Patents by Inventor Masatoshi Tonomura
Masatoshi Tonomura 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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Publication number: 20230200806Abstract: A traction tool for performing traction, of a suture thread under a flexible endoscope is provided. The traction toot includes a first holder configured to hold the suture thread or a suture needle attached to the suture thread; a second holder having an engaging surface configured to engage the suture, thread such that the suture thread is capable of advancing and retracting and configured to release an engagement with the suture thread; and a guide member holding the first holder and the second holder such that the first holder and the second holder are relatively movable.Type: ApplicationFiled: March 6, 2023Publication date: June 29, 2023Inventors: Hiroyuki MORISHITA, Kunihide KAJI, Keita OZAWA, Tsutomu OKADA, Masatoshi TONOMURA, Nobuko MATSUO, Kosuke OKA
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Publication number: 20230200804Abstract: A traction tool for performing traction of suture thread under a flexible endoscope is provided. The tool includes a shaft, a first holder which is provided at a distal end of the shaft and is configured to hold the suture thread or a suture needle attached to the suture thread, and second holder which is provided closer to a proximal end side of the shaft than the first holder and to which the suture thread is hooked. The second holder is expandable in a radial direction of the shaft.Type: ApplicationFiled: March 3, 2023Publication date: June 29, 2023Inventors: Yuta HAYASHI, Masatoshi TONOMURA, Kunihide KAJI
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Patent number: 11540839Abstract: A clip unit includes: an arm portion including arms extending from a proximal end portion to a distal end portion so as to be openable and closeable; a holder than can hold the arms in a closed state by accommodating the proximal end portion of the arm portion; and a thread grip attached to at least one of the arms and positioned between the arms. In a state where the arms are spread open, a dimension of the thread grip in the opening/closing direction of the arms is equal to or larger than a distance between the arms in the closed state. The thread can be elastically deformed in the closed state.Type: GrantFiled: September 16, 2020Date of Patent: January 3, 2023Assignee: OLYMPUS CORPORATIONInventors: Risako Horikoshi, Nobuko Matsuo, Masatoshi Tonomura
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Publication number: 20220218330Abstract: A needle holder includes a sheath, a grasper capable of grasping a target object, an operation portion capable of opening and closing the grasper, and an operation wire. The operation portion includes a main body, a slider, and an elastic member that is elastically deformable depending on an opening and closing position of the grasper. The slider is connected to the grasper via the operation wire. The grasper can release grasping of the target object and can grasp the target object with a first grasping force in response to an operation of moving the slider against a restoring force of the elastic member. The grasper can grasp the target object with a second grasping force smaller than the first grasping force when the restoring force of the elastic member and tension of the operation wire are balanced.Type: ApplicationFiled: March 1, 2022Publication date: July 14, 2022Applicant: OLYMPUS CORPORATIONInventors: Kosuke OKA, Masatoshi TONOMURA, Kunihide KAJI
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Patent number: 10973501Abstract: An endoscopic treatment tool includes a sheath; a treatment portion capable of protruding and retracting from a distal end of the sheath; a manipulation main body; a slider which advances and retracts in a longitudinal axis direction to cause the treatment portion to protrude and retract from the sheath; a first locking mechanism which locks the slider at a position at which the distal end of the treatment portion is accommodated in the sheath in accordance with a retracting manipulation of the slider; a second locking mechanism provided at further distal side than the first locking mechanism and restricts advance of the slider by being locked to the manipulation main body; a fixing mechanism provided in the second locking mechanism and fixed to the manipulation main body by sliding; and a restricting portion which restricts fixing of the fixing mechanism to the manipulation main body.Type: GrantFiled: September 27, 2018Date of Patent: April 13, 2021Assignee: OLYMPUS CORPORATIONInventors: Hirofumi Eto, Yasuhiko Kikuchi, Katsuji Uemichi, Masatoshi Tonomura, Jin Hiraoka
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Publication number: 20210000475Abstract: A clip unit includes: an arm portion including arms extending from a proximal end portion to a distal end portion so as to be openable and closeable; a holder than can hold the arms in a closed state by accommodating the proximal end portion of the arm portion; and a thread grip attached to at least one of the arms and positioned between the arms. In a state where the arms are spread open, a dimension of the thread grip in the opening/closing direction of the arms is equal to or larger than a distance between the arms in the closed state. The thread can be elastically deformed in the closed state.Type: ApplicationFiled: September 16, 2020Publication date: January 7, 2021Applicant: OLYMPUS CORPORATIONInventors: Risako HORIKOSHI, Nobuko MATSUO, Masatoshi TONOMURA
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Publication number: 20190021708Abstract: An endoscopic treatment tool includes a sheath; a treatment portion capable of protruding and retracting from a distal end of the sheath; a manipulation main body; a slider which advances and retracts in a longitudinal axis direction to cause the treatment portion to protrude and retract from the sheath; a first locking mechanism which locks the slider at a position at which the distal end of the treatment portion is accommodated in the sheath in accordance with a retracting manipulation of the slider; a second locking mechanism provided at further distal side than the first locking mechanism and restricts advance of the slider by being locked to the manipulation main body; a fixing mechanism provided in the second locking mechanism and fixed to the manipulation main body by sliding; and a restricting portion which restricts fixing of the fixing mechanism to the manipulation main body.Type: ApplicationFiled: September 27, 2018Publication date: January 24, 2019Applicant: OLYMPUS CORPORATIONInventors: Hirofumi ETO, Yasuhiko KIKUCHI, Katsuji UEMICHI, Masatoshi TONOMURA, Jin HIRAOKA
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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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Patent number: 8708931Abstract: This treatment tool for biopsy includes a needle tube, which having a first aperture and a second aperture. The first aperture and the second aperture communicate with the tubular space. The second aperture is provided in a side surface of the needle tube at more proximal end side than the first aperture. In a cross-section of the second aperture, a distal end circular arc portion of an end surface of the second aperture has a distal end side inclined surface that is inclined so as to be positioned gradually outwards of a radial direction of the needle tube towards the distal end side, and a proximal end circular arc portion of the end surface of the second aperture has a proximal end inclined surface that is inclined so as to be positioned gradually outwards of the radial direction of the needle tube towards the proximal end side.Type: GrantFiled: November 27, 2012Date of Patent: April 29, 2014Assignee: Olympus Medical Systems Corp.Inventors: Saori Takeuchi, Hideo Takachi, Yutaka Yanuma, Masatoshi Tonomura
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Patent number: 8608701Abstract: A puncture needle for an endoscope includes: a flexible sheath; a needle component that is placed on an interior side of the sheath such that it can move freely forwards and backwards; a wire that is provided at a base end portion of the needle component, and that moves the needle component forwards or backwards along an axial direction of the sheath; and an operating section that is connected to an operating side of the sheath, and operates the wire. This wire is formed by a metal material that has elasticity, and a bent portion is provided in the wire that generates friction against an inner wall of the operating section, and imparts resistance to the forwards and backwards movement of the needle component.Type: GrantFiled: May 18, 2007Date of Patent: December 17, 2013Assignee: Olympus CorporationInventor: Masatoshi Tonomura
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Publication number: 20130237879Abstract: This treatment tool for biopsy includes a needle tube, which having a first aperture and a second aperture. The first aperture and the second aperture communicate with the tubular space. The second aperture is provided in a side surface of the needle tube at more proximal end side than the first aperture. In a cross-section of the second aperture, a distal end circular arc portion of an end surface of the second aperture has a distal end side inclined surface that is inclined so as to be positioned gradually outwards of a radial direction of the needle tube towards the distal end side, and a proximal end circular arc portion of the end surface of the second aperture has a proximal end inclined surface that is inclined so as to be positioned gradually outwards of the radial direction of the needle tube towards the proximal end side.Type: ApplicationFiled: November 27, 2012Publication date: September 12, 2013Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Saori TAKEUCHI, Hideo TAKACHI, Yutaka YANUMA, Masatoshi TONOMURA
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Patent number: 8282575Abstract: An endoscopic puncture needle includes a sheath, an outer needle, an outer needle moving member, an inner needle, an inner needle moving member, and an operation portion. The outer needle moves along an axial direction of the sheath in the sheath, and is retractable with respect to a distal end of the sheath. The outer needle moving member is arranged at a proximal end portion of the outer needle, and moves the outer needle with respect to the sheath. The inner needle moves in the outer needle along the axial direction of the sheath, and is retractable with respect to a distal end of the outer needle. The inner needle moving member is arranged at a proximal end portion of the inner needle, and moves the inner needle with respect to the outer needle. The operation portion operates the outer needle moving member and the inner needle moving member.Type: GrantFiled: January 14, 2008Date of Patent: October 9, 2012Assignee: Olympus Medical Systems Corp.Inventors: Masatoshi Tonomura, Teruhisa Seki
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Patent number: 8241227Abstract: A biopsy tissue sampling treatment instrument includes a stem portion having a predetermined length sufficient to puncture living tissue; a puncturing portion formed at a distal end of the stem portion and having a protruding surface portion expanding rearward along a puncture direction of the stem portion; a tissue holding surface provided on a rear side of the protruding surface portion in the puncturing portion and having an area large enough to hold the living tissue; a stopper member provided at a rear end of the stem portion and having an abutting portion capable of abutting against the living tissue punctured by the stem portion; and an operating member provided on the stopper member and configured to hold the stem portion to the living tissue, allowing the stem portion to puncture the living tissue.Type: GrantFiled: July 28, 2010Date of Patent: August 14, 2012Assignee: Olympus Medical Systems Corp.Inventors: Junichi Ohnishi, Masatoshi Tonomura, Akira Suzuki
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Publication number: 20110105944Abstract: A biopsy tissue sampling treatment instrument includes a stem portion having a predetermined length sufficient to puncture living tissue; a puncturing portion formed at a distal end of the stem portion and having a protruding surface portion expanding rearward along a puncture direction of the stem portion; a tissue holding surface provided on a rear side of the protruding surface portion in the puncturing portion and having an area large enough to hold the living tissue; a stopper member provided at a rear end of the stem portion and having an abutting portion capable of abutting against the living tissue punctured by the stem portion; and an operating member provided on the stopper member and configured to hold the stem portion to the living tissue, allowing the stem portion to puncture the living tissue.Type: ApplicationFiled: July 28, 2010Publication date: May 5, 2011Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Junichi Ohnishi, Masatoshi Tonomura, Akira Suzuki
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Patent number: 7856730Abstract: The internal diameter measurement device is inserted into a cavity to measure its internal diameter. The internal diameter measurement device includes: a tubular sheath inserted into the cavity; a balloon which is provided on a distal end portion of the sheath, and is capable of expanding by supplying a fluid to an inner portion thereof; a linear reference member having a first end portion fixed to the distending portion or the distal end portion of the insertion portion, and a second end portion moving towards the distal end of the insertion portion in conjunction with the expansion of the distending portion; and a measuring portion which is provided in a proximal end portion of the insertion portion and is capable of confirming the position of the second end portion of the reference member. This internal diameter measurement device enables accurate measurement irrespectively of dimensions of a pipeline to be measured.Type: GrantFiled: January 12, 2009Date of Patent: December 28, 2010Assignee: Olympus Medical Systems Corp.Inventors: Masato Sakai, Masatoshi Tonomura
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Publication number: 20090178289Abstract: The internal diameter measurement device is inserted into a cavity to measure its internal diameter. The internal diameter measurement device includes: a tubular sheath inserted into the cavity; a balloon which is provided on a distal end portion of the sheath, and is capable of expanding by supplying a fluid to an inner portion thereof; a linear reference member having a first end portion fixed to the distending portion or the distal end portion of the insertion portion, and a second end portion moving towards the distal end of the insertion portion in conjunction with the expansion of the distending portion; and a measuring portion which is provided in a proximal end portion of the insertion portion and is capable of confirming the position of the second end portion of the reference member. This internal diameter measurement device enables accurate measurement irrespectively of dimensions of a pipeline to be measured.Type: ApplicationFiled: January 12, 2009Publication date: July 16, 2009Inventors: Masato Sakai, Masatoshi Tonomura
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Publication number: 20080139960Abstract: An endoscopic puncture needle includes a sheath, an outer needle, an outer needle moving member, an inner needle, an inner needle moving member, and an operation portion. The outer needle moves along an axial direction of the sheath in the sheath, and is retractable with respect to a distal end of the sheath. The outer needle moving member is arranged at a proximal end portion of the outer needle, and moves the outer needle with respect to the sheath. The inner needle moves in the outer needle along the axial direction of the sheath, and is retractable with respect to a distal end of the outer needle. The inner needle moving member is arranged at a proximal end portion of the inner needle, and moves the inner needle with respect to the outer needle. The operation portion operates the outer needle moving member and the inner needle moving member.Type: ApplicationFiled: January 14, 2008Publication date: June 12, 2008Inventors: Masatoshi TONOMURA, Teruhisa SEKI
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Publication number: 20070225646Abstract: A puncture needle for an endoscope includes: a flexible sheath; a needle component that is placed on an interior side of the sheath such that it can move freely forwards and backwards; a wire that is provided at a base end portion of the needle component, and that moves the needle component forwards or backwards along an axial direction of the sheath; and an operating section that is connected to an operating side of the sheath, and operates the wire. This wire is formed by a metal material that has elasticity, and a bent portion is provided in the wire that generates friction against an inner wall of the operating section, and imparts resistance to the forwards and backwards movement of the needle component.Type: ApplicationFiled: May 18, 2007Publication date: September 27, 2007Inventor: Masatoshi TONOMURA
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Patent number: 6383183Abstract: A high frequency treatment apparatus of the present invention comprises a high frequency generation section for supplying high frequency power, a control section, which is connected to the high frequency generation section, and which controls output of the high frequency generation section, having a first control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a first predetermined value and a second control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a second predetermined value which is less than the first predetermined value, a treatment tool, which is connected to the high frequency generation section, and which performs a treatment of a diseased part by supplying high frequency power from the high frequency generation section controlled by the control section to the diseased part, and a conType: GrantFiled: April 7, 1999Date of Patent: May 7, 2002Assignee: Olympus Optical Co., Ltd.Inventors: Naomi Sekino, Yasuhiko Kikuchi, Kazuya Hijii, Masahide Ohyama, Kouji Yamauchi, Hiroyuki Takahashi, Takahiro Kogasaka, Akio Nakada, Takeaki Nakamura, Masatoshi Tonomura, Hideto Yoshimine, Hiroaki Matsumoto
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Patent number: 5601588Abstract: An endoscopic puncture needle including a flexible outer sheath, a flexible inner sheath advanceably and retreatably inserted through the outer sheath, and a needle element formed at the distal end of the inner sheath, in which the inner sheath is made of a metallic pipe.Type: GrantFiled: September 27, 1995Date of Patent: February 11, 1997Assignee: Olympus Optical Co., Ltd.Inventors: Masatoshi Tonomura, Minoru Shinozuka