Patents by Inventor Masanori Hangai
Masanori Hangai 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: 9456745Abstract: In a fundus observation apparatus, an optical system detects interference light generated by superposing signal light having traveled by way of an eye fundus and reference light having traveled by way of a reference optical path. An image forming part forms a cross sectional image based on detection results of the interference light. A specifying part analyzes the cross sectional image to specify an abnormal region located in the vicinity of central fovea of the eye fundus. The association information generating part calculates the distance between the central fovea and the abnormal region and generates association information in which the direction of the abnormal region relative to the central fovea and the distance are associated with each other. The evaluation information generating part generates evaluation information for evaluating the state of the eye fundus based on the association information.Type: GrantFiled: January 21, 2013Date of Patent: October 4, 2016Assignees: KYOTO UNIVERSITY, KABUSHIKI KAISHA TOPCONInventors: Akiko Matsumoto, Yugo Kimura, Masanori Hangai, Nagahisa Yoshimura, Tsutomu Kikawa, Akihiko Sekine
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Publication number: 20150116660Abstract: In a fundus observation apparatus, an optical system detects interference light generated by superposing signal light having traveled by way of an eye fundus and reference light having traveled by way of a reference optical path. An image forming part forms a cross sectional image based on detection results of the interference light. A specifying part analyzes the cross sectional image to specify an abnormal region located in the vicinity of central fovea of the eye fundus. The association information generating part calculates the distance between the central fovea and the abnormal region and generates association information in which the direction of the abnormal region relative to the central fovea and the distance are associated with each other. The evaluation information generating part generates evaluation information for evaluating the state of the eye fundus based on the association information.Type: ApplicationFiled: January 21, 2013Publication date: April 30, 2015Applicants: Kyoto University, KABUSHIKI KAISHA TOPCONInventors: Akiko Matsumoto, Yugo Kimura, Masanori Hangai, Nagahisa Yoshimura, Tsutomu Kikawa, Akihiko Sekine
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Patent number: 8641701Abstract: There is provided a probe type living body tissue removing device comprising a probe unit having a probe formed in a capillary tube shape and an opening hole portion for internally aspirating a living body tissue, and also having a dissection device arranged within the probe and dissecting the living body tissue aspirated into the probe from the opening hole portion of the probe; wherein an aspiration force supplying device for supplying aspiration force to the probe unit, and a dissection driving source supplying device for supplying power or energy for fulfilling a function of the dissection device to the probe unit are connected to the probe unit; and the probe type living body tissue removing device dissects, and aspirates and removes the living body tissue by the dissecting means while the probe is inserted into the living body tissue and the living body tissue is aspirated through the opening hole portion; and a plurality of the opening hole portions of the probe are arranged.Type: GrantFiled: March 6, 2008Date of Patent: February 4, 2014Assignees: Kyoto University, Hoya CorporationInventors: Masanori Hangai, Nagahisa Yoshimura, Masaaki Nakahara, Kazunori Miyata, Tetsuya Eguchi, Yasuhiro Osakabe
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Patent number: 7954778Abstract: An ophthalmic surgery support comprising a moving mechanism for holding a surgical instrument to be movable in Z-axis direction, a tilting mechanism for holding the moving mechanism so that a surgical instrument can be tilted in an arbitrary direction about a specified point that is to be positioned to a wound opening and positioned on the Z-axis, and a tilt fixing mechanism for fixing the tilt of the surgical instrument by the tilting mechanism, wherein the tilting mechanism has a rough-motion tilting mechanism, a fine-motion tilting mechanism finer in tilting range than the rough-motion tilting mechanism, a tilt switching mechanism for switching the tilt of the surgical instrument by the rough-motion tilting mechanism to that by the fine-motion tilting mechanism, and a resistance imparting means for imparting resistance for damping the tilting operation of the surgical instrument by the fine-motion tilting mechanism than that by the rough-motion tilting mechanism.Type: GrantFiled: May 16, 2007Date of Patent: June 7, 2011Assignee: Nidek Co., Ltd.Inventors: Koji Osawa, Masanori Hangai
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Publication number: 20100168762Abstract: An ophthalmic surgery support device assisting an operator in the operation of a surgical instrument in order to position to a fine location in an eye the tip end of the surgical instrument to be inserted into the eye through a wound opening opened in the eyeball of a patient, comprising a moving mechanism for holding the surgical instrument so as to be movable in the longitudinal direction of the surgical instrument to be inserted into the eye or in the Z-axis direction, a tilting mechanism for holding the moving mechanism so that the surgical instrument can be tilted in an arbitrary direction about a specified point that is to be positioned to the wound opening and positioned on the Z-axis, and a tilt fixing mechanism for fixing the tilt of the surgical instrument by the tilting mechanism, wherein the tilting mechanism has a rough-motion tilting mechanism, a fine-motion tilting mechanism finer in tilting range than the rough-motion tilting mechanism, a tilt switching mechanism for switching the tilt of theType: ApplicationFiled: May 16, 2007Publication date: July 1, 2010Applicant: NIDEK CO., LTD.Inventors: Koji Osawa, Masanori Hangai
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Publication number: 20100106054Abstract: There is provided a probe type living body tissue removing device comprising a probe unit having a probe formed in a capillary tube shape and an opening hole portion for internally aspirating a living body tissue, and also having a dissection device arranged within the probe and dissecting the living body tissue aspirated into the probe from the opening hole portion of the probe; wherein an aspiration force supplying device for supplying aspiration force to the probe unit, and a dissection driving source supplying device for supplying power or energy for fulfilling a function of the dissection device to the probe unit are connected to the probe unit; and the probe type living body tissue removing device dissects, and aspirates and removes the living body tissue by the dissecting means while the probe is inserted into the living body tissue and the living body tissue is aspirated through the opening hole portion; and a plurality of the opening hole portions of the probe are arranged.Type: ApplicationFiled: March 6, 2008Publication date: April 29, 2010Applicants: KYOTO UNIVERSITY, HOYA CORPORATIONInventors: Masanori Hangai, Nagahisa Yoshimura, Masaaki Nakahara, Kazunori Miyata, Tetsuya Eguchi, Yasuhiro Osakabe
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Patent number: 7641339Abstract: An ophthalmologic examination apparatus 1 projects a light onto a fundus oculi, detects the reflected light thereof, and forms a 3-dimensional image that represents the morphology of a retina based on the detected results. A stimulation-position specifying part 233 specifies, in the 3-dimensional image, a plurality of stimulation positions that correspond to a plurality of stimulation points Pi in a visual-field examination. A layer-thickness measuring part 235 analyzes the 3-dimensional image to find the layer thickness of the retina at each stimulation position. In addition, a displacement calculation part 234 specifies a related position of the stimulation position. A layer-thickness measuring part 235 finds the layer thickness of the retina at the related position.Type: GrantFiled: July 31, 2007Date of Patent: January 5, 2010Assignee: Kabushiki Kaisha TopconInventors: Masanori Hangai, Nagahisa Yoshimura, Yijun Huang, Ryoichi Nadachi
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Publication number: 20090033870Abstract: An ophthalmologic examination apparatus 1 projects a light onto a fundus oculi, detects the reflected light thereof, and forms a 3-dimensional image that represents the morphology of a retina based on the detected results. A stimulation-position specifying part 233 specifies, in the 3-dimensional image, a plurality of stimulation positions that correspond to a plurality of stimulation points Pi in a visual-field examination. A layer-thickness measuring part 235 analyzes the 3-dimensional image to find the layer thickness of the retina at each stimulation position. In addition, a displacement calculation part 234 specifies a related position of the stimulation position. A layer-thickness measuring part 235 finds the layer thickness of the retina at the related position.Type: ApplicationFiled: July 31, 2007Publication date: February 5, 2009Inventors: Masanori Hangai, Nagahisa Yoshimura, Yijun Huang, Ryoichi Nadachi
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Publication number: 20070255207Abstract: A balloon catheter for medical treatments easily manufacturable at low cost by a rather simple structure by providing a smaller diameter non-profile balloon catheter by eliminating the need for adhesion and welding of a balloon and eliminating extra profile at a connection part between the balloon and a shaft, wherein PTFE may be used for the shaft, and silicone may be used for the balloon. A inside hollow shaft (3) formed of a balloon material is inserted into an outside hollow shaft (2) formed of a shaft material, and the tip part of the inside hollow shaft (3) is projected from the tip end of the outside hollow shaft (2) to manufacture a double-tube catheter shaft (2). An expandable balloon (5) is formed of the projected portion of the inside hollow shaft (3), a cap (4) is fitted to the tip of the inside hollow shaft (3), and the PTFE is used for the outside hollow shaft (2), with the silicone used for the inside hollow shaft (3).Type: ApplicationFiled: December 10, 2004Publication date: November 1, 2007Applicants: IR MEDICAL LABORATORY CO., LTD.Inventors: Masanori Hangai, Daisuke Kawabe