Patents by Inventor Masaaki Nakazawa
Masaaki Nakazawa 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: 20240071492Abstract: A control device (10) according to an embodiment includes an initial write instruction unit (30) and a data write instruction unit (40). The initial write instruction unit (30), before accepting an information write request to a storage device (20) including a plurality of resistance change storage elements each of which stores information by using a difference of the resistance state, outputs to the storage device (20) a write instruction to bring the storage element into a first resistance state. The data write instruction unit (40), upon accepting a write request, outputs to the storage device (20) a write instruction to bring the storage element into the first resistance state or a second resistance state according to the write request.Type: ApplicationFiled: December 17, 2021Publication date: February 29, 2024Inventors: Masaaki NAKAZAWA, Masami KURODA
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Patent number: 6991602Abstract: A medical treatment method comprises orally inserting a first endoscope having a first treatment tool provided thereto into a body cavity, inserting a first insertion member insertion support tool from at least one of abdominal and transdermal cavities into the body cavity, inserting a second endoscope having a second treatment tool provided thereto into the body cavity through the first insertion member insertion support tool, grasping a lesioned part by the second treatment tool inserted into the body cavity by the second endoscope, cutting the lesioned part by the first treatment tool inserted into the body cavity by the first endoscope, and collecting the lesioned part.Type: GrantFiled: December 31, 2002Date of Patent: January 31, 2006Assignee: Olympus CorporationInventors: Masaaki Nakazawa, Toshio Nakamura, Hidenobu Kimura, Tatsuya Furukawa, Koji Yamaya, Nobuyuki Matsuura, Hisao Yabe
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Patent number: 6786864Abstract: An endoscope including; a fixing member detachably mounted to a distal end portion of an endoscope insertion part for detachably fixing and holding a distal end portion of an indwelling tube or a distal end portion of a guide member for guiding the indwelling tube, both of which are provided along the axial direction of the insertion part, to the distal end portion of the insertion part.Type: GrantFiled: February 5, 2002Date of Patent: September 7, 2004Assignee: Olympus CorporationInventors: Nobuyuki Matsuura, Raifu Matsui, Toshio Nakamura, Hisao Yabe, Masaaki Nakazawa
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Publication number: 20030135091Abstract: A medical treatment method comprises orally inserting a first endoscope having a first treatment tool provided thereto into a body cavity, inserting a first insertion member insertion support tool from at least one of abdominal and transdermal cavities into the body cavity, inserting a second endoscope having a second treatment tool provided thereto into the body cavity through the first insertion member insertion support tool, grasping a lesioned part by the second treatment tool inserted into the body cavity by the second endoscope, cutting the lesioned part by the first treatment tool inserted into the body cavity by the first endoscope, and collecting the lesioned part.Type: ApplicationFiled: December 31, 2002Publication date: July 17, 2003Inventors: Masaaki Nakazawa, Toshio Nakamura, Hidenobu Kimura, Tatsuya Furukawa, Koji Yamaya, Nobuyuki Matsuura, Hisao Yabe
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Publication number: 20020183591Abstract: An endoscope including; a fixing member detachably mounted to a distal end portion of an endoscope insertion part for detachably fixing and holding a distal end portion of an indwelling tube or a distal end portion of a guide member for guiding said indwelling tube, both of which are provided along the axial direction of said insertion part, to the distal end portion of said insertion part.Type: ApplicationFiled: February 5, 2002Publication date: December 5, 2002Inventors: Nobuyuki Matsuura, Raifu Matsui, Toshio Nakamura, Hisao Yabe, Masaaki Nakazawa
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Patent number: 6110104Abstract: An endoscope system having a cover type endoscope provided with an elongate inserting section having therein an observation device and an illuminating device and bulge portions formed on the outer periphery at the side of a forwardmost end of the inserting section; and an endoscope cover having an endoscope inserting passage for covering and protecting the inserting section. The endoscope inserting passage receives the inserting section using the bulge portions as a guide. The bulge portions project more than the outer periphery of the inserting section.Type: GrantFiled: September 17, 1998Date of Patent: August 29, 2000Assignee: Olympus Optical Co., Ltd.Inventors: Akira Suzuki, Hisao Yabe, Yoshihiro Iida, Hideo Itoh, Yoshio Tashiro, Minoru Yamazaki, Osamu Tamada, Keiichi Arai, Hiroshi Ishii, Masaaki Nakazawa, Koji Yamaya, Yasuhito Kura
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Patent number: 5879288Abstract: An endoscope system provided with an electronic or optical endoscope is provided therein with an illuminating optical system, an observation optical system, a flow passage system and a forceps channel. Cleaning and disinfection operations are performed on the endoscope so that the endoscope is reusable. An electronic or optical cover type endoscope is provided therein with an illuminating optical system and an observation optical system. The cover type endoscope is used with an endoscope cover having a flow passage system and a forceps channel mounted on the cover type endoscope. The endoscope cover is discarded and replaced whereby the cover type endoscope is reused. Peripheral equipment for endoscope inspection used in combination with the endoscopes is capable of being selectively connected to any of the endoscopes.Type: GrantFiled: February 13, 1996Date of Patent: March 9, 1999Assignee: Olympus Optical Co., Ltd.Inventors: Akira Suzuki, Hisao Yabe, Yoshihiro Iida, Hideo Itoh, Yoshio Tashiro, Minoru Yamazaki, Osamu Tamada, Keiichi Arai, Hiroshi Ishii, Masaaki Nakazawa, Koji Yamaya, Yasuhito Kura
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Patent number: 5876326Abstract: An electronic endoscope apparatus provided with an electronic endoscope having arranged thereon a solid-state image pickup element at an insertion portion, and external devices such as a light source device for supplying an illumination light to the electronic endoscope, a video processor for processing an electrical signal transmitted from the solid-state image pickup element of the electronic endoscope to produce a video signal. An electrical connection portion for electrically connecting the electronic endoscope and the video processor is provided at a connector portion which is provided at an end of a universal cord which connects the electronic endoscope and the light source device. An electromagnetic interference countermeasure member is provided which covers at least one of the connector portion, the universal cord and the external devices. A dual shield around a signal line is also provided which includes spirally-wound lead wires having different diameters and ends connected to video ground.Type: GrantFiled: December 27, 1995Date of Patent: March 2, 1999Assignee: Olympus Optical Co., Ltd.Inventors: Koji Takamura, Takahiro Kishi, Hisao Yabe, Koji Yamaya, Masaaki Nakazawa, Hideo Ito, Hiroshi Ishii
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Patent number: 5871441Abstract: An endoscope has a channel switching device for use in switching over a suction channel. The channel switching device consists broadly of a cylinder unit and valve unit. The valve unit can be disassembled into three component parts; a button assembly, piston assembly, and mount assembly. The button assembly has a cap, which is made of a rigid resin such as polyether ketone (PEEK) or polysulfone (PSU), as the uppermost part thereof. Since the cap is made of a rigid resin durable to autoclaving; such as, PSU or PEEK, the valve unit will not be damaged due to autoclaving. Even when the autoclaved valve unit is put to use though it is not yet cooled down, an operator will not perceive heat very much but can manipulate the endoscope as he/she intends.Type: GrantFiled: December 22, 1995Date of Patent: February 16, 1999Assignee: Olympus Optical Co., Ltd.Inventors: Tsutomu Ishiguro, Masaaki Nakazawa, Hisao Yabe, Hideo Ito
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Patent number: 5863286Abstract: In an endoscope system including an endoscope having an insertion section and an operation section and a disposable protection cover having an insertion section cover having formed therein a forceps channel and a forceps inlet opening through which a forceps can be inserted into the forceps channel, the forceps inlet opening is selectively closed by a forceps plug which is made of resilient material and separately formed from the insertion section cover. The forceps plug is preferably formed such that it can be detachably secured to a forceps inlet opening of an ordinary coverless (without-cover} endoscope.Type: GrantFiled: March 25, 1993Date of Patent: January 26, 1999Assignee: Olympus Optical Company, Ltd.Inventors: Hisao Yabe, Yoshihiro Iida, Akira Suzuki, Hideo Ito, Yoshio Tashiro, Minoru Yamazaki, Osamu Tamada, Masaaki Nakazawa, Koji Yamaya
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Patent number: 5749829Abstract: An endoscope system in accordance with the present invention comprises: an endoscope having an insertional part, operation unit, and connector unit set in array, and including channels that communicate with an opening formed in the distal section of the insertional part and an opening formed in the operation unit or connector unit; and at least one cleaning instrument having a flexible tube that can be connected to the opening formed in the operation unit or connector unit of the endoscope and that has the overall length thereof set to 30 cm or larger.Type: GrantFiled: January 29, 1996Date of Patent: May 12, 1998Assignee: Olympus Optical Co., Ltd.Inventors: Takeshi Yokoi, Takahiro Kishi, Tsutomu Ishiguro, Masaaki Nakazawa, Yukio Takahashi, Hideo Ito, Hisao Yabe, Satoshi Nakagawasai
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Patent number: 5735793Abstract: An endoscope having a conduit-providing flexible tube and a device for connecting said flexible tube, said device comprising a coupling member that is provided on the outer circumference with a first tapered portion the outside diameter of which decreases toward at least one end of said coupling member and that has a conduit in the interior, an annular retaining member that is fitted over the outer circumference of one end portion of said flexible tube which is to be fitted over said first tapered portion and that has on the inner circumference a second tapered portion the inside diameter of which decreases toward said at least one end in such a way as to provide engagement with said first tapered portion, and a clamp member that depresses said retaining member in the axial direction in which said first tapered portion flares, thereby depressing said flexible tube to be secured to said coupling member, characterized by further having an urging and covering member that not only covers the outer circumferentialType: GrantFiled: July 11, 1996Date of Patent: April 7, 1998Assignee: Olympus Optical Co., Ltd.Inventors: Yukio Takahashi, Ichiro Nakamura, Masaaki Nakazawa, Hideo Ito, Hisao Yabe
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Patent number: 5707344Abstract: An endoscope includes an operating portion placed outside a living body, an insertion portion having a proximal end portion coupled to the operating portion, a distal end portion inserted in the living body, and an instrument insertion channel extending through the insertion portion, a raising mechanism having an operation wire and designed to direct the distal end portion of an instrument, caused to extend through the channel, to a predetermined position, and an operation means for operating the operation wire. The endoscope includes a distal end body portion arranged at the distal end portion of the insertion portion and incorporating an observation means for observing the interior of the living body, a support member for forming at least a portion of the outer surface of the distal end portion. The support member is detachable from the distal end body portion.Type: GrantFiled: April 25, 1996Date of Patent: January 13, 1998Assignee: Olympus Optical Co., LTD.Inventors: Masaaki Nakazawa, Hideo Ito, Koji Nakamoto, Yasuhito Kura, Seiji Kitano, Hisao Yabe, Tatsuya Furukawa
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Patent number: 5702347Abstract: In an endoscope system including an endoscope having an insertion section and an operation section and a disposable protection cover having an insertion section cover having formed therein a forceps channel and a forceps inlet opening through which a forceps can be inserted into the forceps channel, said forceps inlet opening is selectively closed by a forceps plug which is made of resilient material and separately formed from the insertion section cover. The forceps plug is preferably formed such that it can be detachably secured to a forceps inlet opening of an ordinary coverless (without-cover) endoscope.Type: GrantFiled: April 12, 1996Date of Patent: December 30, 1997Assignee: Olympus Optical Co., Ltd.Inventors: Hisao Yabe, Yoshihiro Iida, Akira Suzuki, Hideo Ito, Yoshio Tashiro, Minoru Yamazaki, Osamu Tamada, Masaaki Nakazawa, Koji Yamaya
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Patent number: 5569157Abstract: An endoscope includes an operating portion placed outside a living body, an insertion portion having a proximal end portion coupled to the operating portion, a distal end portion inserted in the living body, and an instrument insertion channel extending through the insertion portion, a raising mechanism having an operation wire and designed to direct the distal end portion of an instrument, caused to extend through the channel, to a predetermined position, and an operation means for operating the operation wire. The endoscope includes a distal end body portion arranged at the distal end portion of the insertion portion and incorporating an observation means for observing the interior of the living body, a support member for forming at least a portion of the outer surface of the distal end portion. The support member is detachable from the distal end body portion.Type: GrantFiled: May 2, 1994Date of Patent: October 29, 1996Assignee: Olympus Optical Co., Ltd.Inventors: Masaaki Nakazawa, Hideo Ito, Koji Nakamoto, Yasuhito Kura, Seiji Kitano, Hisao Yabe, Tatsuya Furukawa
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Patent number: 5507717Abstract: A device to be incorporated in the housing of the operation section of an endoscope, for operating a bending mechanism incorporated in the insertion section of the endoscope, comprises an operation shaft and a holder. The operation shaft has a distal end connected to the bending mechanism and a proximal end portion projecting from an operation section of the endoscope. The holder is mounted on a distal end portion of the operation shaft and comprises an upper and lower cover which are joined together and which define an outside surface and a hollow cylindrical space around the operation shaft. The upper and lower covers abut each other to form an interface on the outside surface.Type: GrantFiled: May 24, 1994Date of Patent: April 16, 1996Assignee: Olympus Optical Co., Ltd.Inventors: Yasuhito Kura, Takayuki Yokota, Koji Nakamoto, Masaaki Nakazawa, Hisao Yabe, Hideo Ito
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Patent number: 5402770Abstract: An endoscope pipeline controlling apparatus and endoscope system comprising an air feeding pipe communicating with an air feeding pump, a water feeding tank to which is connected a water feeding air feeding pipe branched from a part of the above-mentioned air feeding pipe, a water feeding pipe connected to this water feeding tank, electromagnetic valves fitted to the above-mentioned air feeding pipe and water feeding pipe and connecting pipelines connecting the above-mentioned air feeding pipe and water feeding pipe to communicate with pipelines of an endoscope so that, even if a light source apparatus feeding an illuminating light to the endoscope is not provided with an air feeding and water feeding pipeline controlling apparatus, feeding air and feeding water to the endoscope will be able to be controlled.Type: GrantFiled: January 21, 1994Date of Patent: April 4, 1995Assignee: Olympus Optical Co., Ltd.Inventors: Yoshihiro Iida, Masaaki Nakazawa, Takahiro Kishi, Tsugio Okazaki
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Patent number: 5343855Abstract: An endoscope pipeline controlling apparatus and endoscope system comprising an air feeding pipe communicating with an air feeding pump, a water feeding tank to which is connected a water feeding air feeding pipe branched from a part of the above-mentioned air feeding pipe, a water feeding pipe connected to this water feeding tank, electromagnetic valves fitted to the above-mentioned air feeding pipe and water feeding pipe and connecting pipelines connecting the above-mentioned air feeding pipe and water feeding pipe to communicate with pipelines of an endoscope so that, even if a light source apparatus feeding an illuminating light to the endoscope is not provided with an air feeding and water feeding pipeline controlling apparatus, feeding air and feeding water to the endoscope will be able to be controlled.Type: GrantFiled: May 16, 1991Date of Patent: September 6, 1994Assignee: Olympus Optical Co., Ltd.Inventors: Yoshihiro Iida, Masaaki Nakazawa, Takahiro Kishi, Tsugio Okazaki
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Patent number: 5078144Abstract: An ultrasonic treatment system for conducting treatment by converging ultrasonic waves which are generated outside of a body to a part to be treated in the body comprising an ultrasonic wave generator for generating the ultrasonic waves to be converged to the part to be treated; and an insertion tube connected to the ultrasonic wave generator for guiding an instrument, such as a syringe, employed to introduce and/or return a treatment material to the body.Type: GrantFiled: June 14, 1989Date of Patent: January 7, 1992Assignee: Olympus Optical Co. Ltd.Inventors: Naomi Sekino, Shuichi Takayama, Masakazu Gotanda, Koichiro Ishihara, Naoki Uchiyama, Nobuhiko Watanabe, Masaaki Nakazawa, Tsuguhisa Sasai, Tsutomu Okada, Takeo Haneda, Masaaki Hayashi
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Patent number: 4918521Abstract: This solid state imaging apparatus is provided within the tip part of an insertable part of an endoscope and is provided with an image forming optical system for forming images. This image forming optical system forms an optical image on the imaging surface of a solid state imaging chip provided in the rear of this image forming optical system. This solid state imaging chip is affixed to a circuit substrate extending substantially at right angles with the imaging surface and electrically connected with the solid state imaging chip. This circuit substrate is connected with a signal cable transmitting input and output signals of the solid state imaging chip.Type: GrantFiled: January 14, 1988Date of Patent: April 17, 1990Assignee: Olympus Optical Co., Ltd.Inventors: Hisao Yabe, Hisao Ogiu, Toshiyuki Takara, Koji Takamura, Masaaki Nakazawa, Akinobu Uchikubo, Tomoaki Sato, Atsushi Miyazaki, Akibumi Ishikawa, Takeaki Nakamura