Patents by Inventor Shigeyuki Naka
Shigeyuki Naka 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: 11911004Abstract: A bending and extending device 1 comprises an elastic hollow guide unit 2 and a movable part 3 to be movably inserted into the guide unit 2. The movable part 3 is constituted, either partially or entirely, of a plurality of belt-like flexible parts 30a and 30b, which extend in the axial direction of the guide unit 2 and the flexible parts 30a and 30b are connected at distal ends.Type: GrantFiled: October 24, 2017Date of Patent: February 27, 2024Assignee: NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCEInventors: Atsushi Yamada, Tohru Tani, Shigeyuki Naka, Shigehiro Morikawa
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Publication number: 20220409229Abstract: Provided is a scissors-type medical treatment tool capable of not only local tissue fixation in an incision/cutting part but also heating on side surfaces of electrodes of a forceps/tweezers type. It has been found out that a tissue part in which tissue is nipped between blades and a tissue part which is brought into abutment against side surfaces of the blades can be heated simultaneously or sequentially by optimizing arrangement of microwave application electrodes and microwave receiver electrodes in a blade pair (in particular, by causing coagulation to be performed evenly on the left and right of the blades), and the present invention has therefore been achieved.Type: ApplicationFiled: June 20, 2020Publication date: December 29, 2022Applicant: National University Corporation Shiga University of Medical ScienceInventors: Tohru TANI, Shigeyuki NAKA, Atsushi YAMADA
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Publication number: 20220175410Abstract: A cutting device including a first contact member and at second contact member assembled so as to be openable and closable, a contact mechanism that rotates the first contact member toward the second contact member to bring the first contact member and the second contact member into contact with a target portion, and a cutting mechanism for cutting the target portion in a state where the first contact member and the second contact member are in contact with the target portion by the contact mechanism.Type: ApplicationFiled: December 17, 2021Publication date: June 9, 2022Inventors: Tohru TANI, Shigeyuki NAKA, Atsushi YAMADA, Tsuyoshi NAKAKUBO
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Patent number: 10842564Abstract: It is an object to provide a surgical instrument capable of locally applying microwaves to a minute biological tissue. It has been found that microwaves can be transmitted to a tip of a tapered coaxial body (9) and that microwaves are radiated from the entire central conductor exposed in a major axis direction by decreasing a sectional area (preferably diameter) of a central conductor (1) and a sectional area (preferably inner diameter) of an external conductor gradually or in a step-by-step manner with a ratio between the sectional area (diameter) of the central conductor (1) and the sectional area (inner diameter) of the external conductor being set to be constant, thereby achieving the present invention.Type: GrantFiled: August 9, 2012Date of Patent: November 24, 2020Assignee: National University Corporation Shiga University of Medical ScienceInventors: Tohru Tani, Shigeyuki Naka, Hisanori Shiomi
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Patent number: 10531916Abstract: Microwave-irradiating surgical instruments for endoscopic forceps or scope-assisted surgery forceps that have long lead wires often generate heat even during microwave transmission and a water supply device for cooling is necessary. Accordingly, conventional surgical instruments that irradiated energy such as microwaves had a separate passage for passing water (a water supply device) inside the forceps or endoscope. Due to the space occupied by said water supply device, the image cable or work hole diameter could not be enlarged. Moreover, the presence of the water supply device made surgery difficult. The present invention was completed by the discovery that a microwave-irradiating instrument wherein the central conductor is hollow and forms a channel and said channel is used as a water supply tube, etc. solves the above problems without affecting microwave irradiation efficiency.Type: GrantFiled: November 13, 2014Date of Patent: January 14, 2020Assignee: MICRON SHIGA INC.Inventors: Shigeyuki Naka, Tohru Tani
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Publication number: 20190335977Abstract: A bending and extending device 1 comprises an elastic hollow guide unit 2 and a movable part 3 to be movably inserted into the guide unit 2. The movable part 3 is constituted, either partially or entirely, of a plurality of belt-like flexible parts 30a and 30b, which extend in the axial direction of the guide unit 2 and the flexible parts 30a and 30b are connected at distal ends.Type: ApplicationFiled: October 24, 2017Publication date: November 7, 2019Inventors: Atsushi YAMADA, Tohru TANI, Shigeyuki NAKA, Shigehiro MORIKAWA
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Patent number: 10166040Abstract: It is an object to provide a surgical tool for excising a hard solid organ such as cirrhotic liver or cutting the organ into a groove without causing bleeding. The inventors of the present invention have found that an organ resection tool including a brush-like structure capable of performing microwave irradiation and/or a brush-like structure capable of receiving a microwave can achieve the above-mentioned object, to thereby arrive at the present invention (organ resection tool including a brush structure capable of performing microwave irradiation). For example, an organ can be crushed or scraped away by manually abrading the organ with a brush of a solid organ resection tool including a brush structure capable of performing microwave irradiation according to the present invention. Further, the organ can be concurrently coagulated through the microwave irradiation to stop bleeding.Type: GrantFiled: May 14, 2013Date of Patent: January 1, 2019Assignee: National University Corporation Shiga University Of Medical ScienceInventors: Tohru Tani, Shigeyuki Naka, Hiroya Akabori
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Patent number: 9907549Abstract: Provided is a surgical instrument that is substitutable for an operation of placing each stitch with a threaded needle or a stapler. It is confirmed that, in a tissue suturing device including a clamping section, and a protruding section including a central conductor and/or an external conductor for applying a microwave, the protruding section and the clamping section bring fragmentary portions of tissues to be sutured into contact or overlap with each other, and coagulate and/or fix contact or overlap portions with the microwave, to thereby stitch the tissues to be sutured.Type: GrantFiled: December 14, 2012Date of Patent: March 6, 2018Assignee: National University Corp. Shiga University of Medical ScienceInventors: Tohru Tani, Shigeyuki Naka
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Patent number: 9826889Abstract: A display device configured to display an endoscopic image obtained by an endoscope for observing an object is provided. The display device includes a projecting unit configured to project coordinate axes set to the object onto the endoscopic image, and a display unit configured to display thereon the endoscopic image and the coordinate axes projected onto the endoscopic image.Type: GrantFiled: October 15, 2013Date of Patent: November 28, 2017Assignees: Shiga University of Medical Science, GE Medical Systems Global Technology Company, LLCInventors: Hasnine Haque, Shigeyuki Naka, Shigehiro Morikawa, Tohru Tani
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Publication number: 20170290623Abstract: There is provided an energy device for surgical operation capable of suppressing fixation of body tissue, wherein a coating layer is formed on an outer periphery of a base material constituting an operational area portion transmitting energy in an energy device for surgical operation operating in the operational area portion, and is comprised of a base coating formed on the base material and an outermost coating formed on the base coating. The base coating is made from silicon oxide or a compound containing silicon oxide, and the outermost coating is made from polysiloxane or a compound containing polysiloxane or a compound containing a partly fluorinated polysiloxane, and the coating layer has a good adhesiveness and is applicable to a complicated form.Type: ApplicationFiled: July 13, 2015Publication date: October 12, 2017Applicants: TOCALO CO., LTD., NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCEInventors: Shinya MIKI, Megumi ADACHI, Toru TANI, Shigeyuki NAKA, Tomoharu SHIMIZU
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Publication number: 20170245931Abstract: An organ resection tool has a first conductor configured to apply microwaves, a second conductor configured to receive the microwaves, an insulator with which at least one of the first conductor and the second conductor is partially or entirely covered, and a brush structure connected directly or indirectly to the insulator or to at least one of the first conductor and the second conductor.Type: ApplicationFiled: October 16, 2015Publication date: August 31, 2017Inventors: Tohru TANI, Hiroya AKABORI, Shigeyuki NAKA, Keiichi YONEDA, Fumiaki FUJIWARA, Yoshiyuki MURATA
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Patent number: 9585718Abstract: In order to reliably cut off a living tissue by using a microwave in a surgical operation without causing excessive damage to the living tissue or without bleeding, it is necessary to suppress energy attenuation until the microwave reaches electrode blades for nipping, coagulating, and cutting off a tissue. However, it is difficult to suppress the energy attenuation. The present invention relates to a medical treatment device capable of reliably cutting off a living tissue by using a microwave while sealing vasculature by coagulating the living tissue without excessively damaging the living tissue. Specifically, the present invention relates to a medical treatment device including a movable first electrode blade connected to an external conductor and a fixed second electrode blade connected directly to a central electrode.Type: GrantFiled: December 28, 2010Date of Patent: March 7, 2017Assignee: NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITYInventors: Tohru Tani, Shigeyuki Naka
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Publication number: 20170020607Abstract: Microwave-irradiating surgical instruments for endoscopic forceps or scope-assisted surgery forceps that have long lead wires often generate heat even during microwave transmission and a water supply device for cooling is necessary. Accordingly, conventional surgical instruments that irradiated energy such as microwaves had a separate passage for passing water (a water supply device) inside the forceps or endoscope. Due to the space occupied by said water supply device, the image cable or work hole diameter could not be enlarged. Moreover, the presence of the water supply device made surgery difficult. The present invention was completed by the discovery that a microwave-irradiating instrument wherein the central conductor is hollow and forms a channel and said channel is used as a water supply tube, etc. solves the above problems without affecting microwave irradiation efficiency.Type: ApplicationFiled: November 13, 2014Publication date: January 26, 2017Inventors: Shigeyuki Naka, Tohru Tani
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Patent number: 9289260Abstract: The solution of the problem to be solved is the provision of a means for determining timing both accurately and securely at which a treatment is shifted from gripping and coagulation (hemostasis or sealing) to resection by using a multifunctional treatment tool capable of exfoliation, gripping, coagulation (hemostasis or sealing) and resection of the treated region in a bipolar microwave treatment tool. A microwave surgical device control method and a device, in which the completion of coagulation (hemostasis or sealing) of tissue is detected and a microwave oscillation output is controlled by making use of the change in the direct current electric resistance value due to the reduction in the amount of water as the temperature rise of the tissue at the time of heating and coagulation of the tissue in the treated region with microwaves.Type: GrantFiled: March 25, 2008Date of Patent: March 22, 2016Assignee: NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCEInventors: Tohru Tani, Shigeyuki Naka
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Publication number: 20150272427Abstract: A display device configured to display an endoscopic image obtained by an endoscope for observing an object is provided. The display device includes a projecting unit configured to project coordinate axes set to the object onto the endoscopic image, and a display unit configured to display thereon the endoscopic image and the coordinate axes projected onto the endoscopic image.Type: ApplicationFiled: October 15, 2013Publication date: October 1, 2015Applicants: SHIGA UNIVERSITY OF MEDICAL SCIENCE, GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLCInventors: Hasnine Haque, Shigeyuki Naka, Shigehiro Morikawa, Tohru Tani
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Patent number: 9131985Abstract: Provided is a medical treatment device capable of eliminating inconvenience of manipulation in actual clinical use, and ensuring a visual field by introducing a curve in the vicinity of an electrode portion of an outer cylindrical tube.Type: GrantFiled: March 26, 2010Date of Patent: September 15, 2015Assignee: Micron Shiga, Inc.Inventors: Tohru Tani, Yoshimasa Kurumi, Shigeyuki Naka, Mamoru Takashina, Hideki Ishikawa, Teruaki Oikawa
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Publication number: 20150141977Abstract: It is an object to provide a surgical tool for excising a hard solid organ such as cirrhotic liver or cutting the organ into a groove without causing bleeding. The inventors of the present invention have found that an organ resection tool including a brush-like structure capable of performing microwave irradiation and/or a brush-like structure capable of receiving a microwave can achieve the above-mentioned object, to thereby arrive at the present invention (organ resection tool including a brush structure capable of performing microwave irradiation). For example, an organ can be crushed or scraped away by manually abrading the organ with a brush of a solid organ resection tool including a brush structure capable of performing microwave irradiation according to the present invention. Further, the organ can be concurrently coagulated through the microwave irradiation to stop bleeding.Type: ApplicationFiled: May 14, 2013Publication date: May 21, 2015Inventors: Tohru Tani, Shigeyuki Naka, Hiroya Akabori
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Publication number: 20140358165Abstract: Provided is a surgical instrument that is substitutable for an operation of placing each stitch with a threaded needle or a stapler. It is confirmed that, in a tissue suturing device including a clamping section, and a protruding section including a central conductor and/or an external conductor for applying a microwave, the protruding section and the clamping section bring fragmentary portions of tissues to be sutured into contact or overlap with each other, and coagulate and/or fix contact or overlap portions with the microwave, to thereby stitch the tissues to be sutured.Type: ApplicationFiled: December 14, 2012Publication date: December 4, 2014Applicant: NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCEInventors: Tohru Tani, Shigeyuki Naka
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Publication number: 20140194865Abstract: It is an object to provide a surgical instrument capable of locally applying microwaves to a minute biological tissue. It has been found that microwaves can be transmitted to a tip of a tapered coaxial body (9) and that microwaves are radiated from the entire central conductor exposed in a major axis direction by decreasing a sectional area (preferably diameter) of a central conductor (1) and a sectional area (preferably inner diameter) of an external conductor gradually or in a step-by-step manner with a ratio between the sectional area (diameter) of the central conductor (1) and the sectional area (inner diameter) of the external conductor being set to be constant, thereby achieving the present invention.Type: ApplicationFiled: August 9, 2012Publication date: July 10, 2014Applicant: NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCEInventors: Tohru Tani, Shigeyuki Naka, Hisanori Shiomi
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Patent number: 8696551Abstract: The flexible endoscope 20 has a flexible insertion portion 22 to be inserted in an observation zone 11 of a MRI apparatus 10. The insertion portion 22 has an inner tube 71 made of resin, triple helical tubes 72 covering the inner tube 71 and an outer tube 73 made of resin and covering the triple helical tubes 72. The triple helical tubes 72 include a first helical band 721 helically wound around an outer peripheral surface of the inner tube 71, a second helical band 722 helically wound around an outer periphery of the first helical band 721 in a direction opposite to a winding direction of the first helical band 721 and a third helical band 723 helically wound around an outer periphery of the second helical band 722 in a direction opposite to the winding direction of the second helical band 722. The first to third helical bands 721, 722, 723 are made of phosphor bronze or copper-silver alloy, which are materials having low magnetic susceptibility.Type: GrantFiled: February 22, 2008Date of Patent: April 15, 2014Assignees: Machida Endoscope Co., Ltd., Shiga University of Medical ScienceInventors: Kunihiko Miyagi, Masayuki Misawa, Tohru Tani, Yoshimasa Kurumi, Shigeyuki Naka