Patents by Inventor Nagahisa Yoshimura
Nagahisa Yoshimura 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: 11129900Abstract: The purpose of the present invention is to provide a novel system for the delivery of a drug to a posterior segment of the eye. The present invention relates to: a cytophilic peptide-fused high-density lipoprotein (cHDL) which can be used as a carrier for the delivery of a drug to a posterior segment of the eye; a method for producing the cytophilic peptide-fused high-density lipoprotein; a system of the delivery of a drug to a posterior segment of the eye, a pharmaceutical composition, and a system of the delivery of a drug to a posterior segment of the eye, each of which utilizes the cytophilic peptide-fused high-density lipoprotein; and a method for diagnosing, preventing or treating posterior ocular disease.Type: GrantFiled: December 25, 2015Date of Patent: September 28, 2021Assignees: KYOTO UNIVERSITY, NOSTA AGInventors: Kenji Suda, Tatsuya Murakami, Nagahisa Yoshimura, Norimoto Gotoh
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Publication number: 20200253470Abstract: Provided is an optical tomographic imaging apparatus including: a determination unit for determining whether or not an optical member for changing a field angle has been inserted between a scanning unit and an object to be inspected to change a field angle of an acquiring area of a tomographic image; and a switching unit for switching a value of at least one parameter among a control parameter of a control portion for the optical tomographic imaging apparatus, a signal processing parameter of a calculation processing portion, an image processing parameter, and an analysis processing parameter, based on a determination result from the determination unit. Accordingly, a preferred tomographic image of the object is acquired by switching values of various parameters to suitable values even when the optical member for changing a field angle is inserted to change the field angle of the acquiring area of the tomographic image.Type: ApplicationFiled: April 30, 2020Publication date: August 13, 2020Inventors: Akihito Uji, Nagahisa Yoshimura, Tomoyuki Makihira, Hirofumi Yoshida
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Patent number: 10165942Abstract: Focus adjustment is enabled with respect to an object to be inspected even when an optical member for changing a field angle is inserted in order to change the field angle of an acquiring area of a tomographic image, and a clear tomographic image with a focus on the object to be inspected is acquired. In an optical tomographic imaging apparatus, an optical system includes a focus lens configured to focus a measuring light on the object to be inspected. The optical tomographic imaging apparatus includes a unit configured to compensate, when an optical member for changing a field angle is inserted between a scanning unit and the object to be inspected in order to change the field angle of an acquiring area of a tomographic image, a change in a focus position of the focus lens in association with the inserting.Type: GrantFiled: January 7, 2016Date of Patent: January 1, 2019Assignee: Canon Kabushiki KaishaInventors: Akihito Uji, Nagahisa Yoshimura, Hirofumi Yoshida, Tomoyuki Makihira
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Publication number: 20180353066Abstract: An image processing apparatus includes an acquisition unit configured to acquire a tomographic image containing an aqueous humor outflow pathway region that includes at least one of a Schlemm's canal and a collector channel in an anterior ocular segment of a subject's eye, and a generation unit configured to generate an image with the aqueous humor outflow pathway region emphasized or extracted therein based on a luminance value in the tomographic image.Type: ApplicationFiled: November 25, 2016Publication date: December 13, 2018Inventors: Akihito Uji, Hiroshi Imamura, Tomoyuki Makihira, Nagahisa Yoshimura
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Publication number: 20180353063Abstract: Provided is an optical tomographic imaging apparatus including: a determination unit for determining whether or not an optical member for changing a field angle has been inserted between a scanning unit and an object to be inspected to change a field angle of an acquiring area of a tomographic image; and a switching unit for switching a value of at least one parameter among a control parameter of a control portion for the optical tomographic imaging apparatus, a signal processing parameter of a calculation processing portion, an image processing parameter, and an analysis processing parameter, based on a determination result from the determination unit. Accordingly, a preferred tomographic image of the object is acquired by switching values of various parameters to suitable values even when the optical member for changing a field angle is inserted to change the field angle of the acquiring area of the tomographic image.Type: ApplicationFiled: January 7, 2016Publication date: December 13, 2018Inventors: Akihito Uji, Nagahisa Yoshimura, Tomoyuki Makihira, Hirofumi Yoshida
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Patent number: 10098541Abstract: An image processing apparatus includes a determination unit configured to determine, as a partial region of a multi-channel fundus image including an optic disk area and a macular area of a subject's eye, one of a region of the multi-channel fundus image which includes the macular area and a region of the multi-channel fundus image which includes the optic disk area, and a generation unit configured to generate an image in which a difference in color of the partial region is enhanced, by applying to the partial region image processing based on a decorrelation stretching method.Type: GrantFiled: April 6, 2017Date of Patent: October 16, 2018Assignee: Canon Kabushiki KaishaInventors: Akihito Uji, Nagahisa Yoshimura, Hiroshi Imamura, Makoto Sato
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Publication number: 20180015171Abstract: The purpose of the present invention is to provide a novel system for the delivery of a drug to a posterior segment of the eye. The present invention relates to: a cytophilic peptide-fused high-density lipoprotein (cHDL) which can be used as a carrier for the delivery of a drug to a posterior segment of the eye; a method for producing the cytophilic peptide-fused high-density lipoprotein; a system of the delivery of a drug to a posterior segment of the eye, a pharmaceutical composition, and a system of the delivery of a drug to a posterior segment of the eye, each of which utilizes the cytophilic peptide-fused high-density lipoprotein; and a method for diagnosing, preventing or treating posterior ocular disease.Type: ApplicationFiled: December 25, 2015Publication date: January 18, 2018Applicant: KYOTO UNIVERSITYInventors: Kenji SUDA, Tatsuya MURAKAMI, Nagahisa YOSHIMURA, Norimoto GOTOH
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Publication number: 20170332898Abstract: Focus adjustment is enabled with respect to an object to be inspected even when an optical member for changing a field angle is inserted in order to change the field angle of an acquiring area of a tomographic image, and a clear tomographic image with a focus on the object to be inspected is acquired. In an optical tomographic imaging apparatus, an optical system includes a focus lens configured to focus a measuring light on the object to be inspected. The optical tomographic imaging apparatus includes a unit configured to compensate, when an optical member for changing a field angle is inserted between a scanning unit and the object to be inspected in order to change the field angle of an acquiring area of a tomographic image, a change in a focus position of the focus lens in association with the inserting.Type: ApplicationFiled: January 7, 2016Publication date: November 23, 2017Applicant: CANON KABUSHIKI KAISHAInventors: Akihito Uji, Nagahisa Yoshimura, Hirofumi Yoshida, Tomoyuki Makihira
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Publication number: 20170296049Abstract: An image processing apparatus includes a determination unit configured to determine, as a partial region of a multi-channel fundus image including an optic disk area and a macular area of a subject's eye, one of a region of the multi-channel fundus image which includes the macular area and a region of the multi-channel fundus image which includes the optic disk area, and a generation unit configured to generate an image in which a difference in color of the partial region is enhanced, by applying to the partial region image processing based on a decorrelation stretching method.Type: ApplicationFiled: April 6, 2017Publication date: October 19, 2017Inventors: Akihito Uji, Nagahisa Yoshimura, Hiroshi Imamura, Makoto Sato
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Patent number: 9782420Abstract: The present invention provides a pharmaceutical composition for removing drusen, suppressing formation of drusen, and/or treating and/or preventing age-related macular degeneration comprising the compound of formula (I) wherein Ra is independently selected from the group consisting of halo, hydroxy, alkyl, halo-substituted alkyl, aryl, halo- or alkyl-substituted aryl, alkoxy, hydroxy- or carboxy-substituted alkoxy, aryloxy, halo- or alkyl-substituted aryloxy, CHO, C(O)-alkyl, C(O)-aryl, C(O)-alkyl-carboxyl, C(O)-alkylene-carboxy ester and cyano, and m is an integer selected from 0 to 4.Type: GrantFiled: February 19, 2014Date of Patent: October 10, 2017Assignee: Kyoto UniversityInventors: Akira Kakizuka, Hanako Ikeda, Nagahisa Yoshimura, Yuki Muraoka
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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: 20160000810Abstract: The present invention provides a pharmaceutical composition for removing drusen, suppressing formation of drusen, and/or treating and/or preventing age-related macular degeneration comprising the compound of formula (I) wherein Ra is independently selected from the group consisting of halo, hydroxy, alkyl, halo-substituted alkyl, aryl, halo- or alkyl-substituted aryl, alkoxy, hydroxy- or carboxy-substituted alkoxy, aryloxy, halo- or alkyl-substituted aryloxy, CHO, C(O)-alkyl, C(O)-aryl, C(O)-alkyl-carboxyl, C(O)-alkylene-carboxy ester and cyano, and m is an integer selected from 0 to 4.Type: ApplicationFiled: February 19, 2014Publication date: January 7, 2016Applicant: Kyoto UniversityInventors: Akira Kakizuka, Hanako Ikeda, Nagahisa Yoshimura, Yuki Muraoka
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Patent number: 9206129Abstract: The present invention provides agents effective to treat eye diseases, pharmaceutical compositions comprising them, methods for preparing pharmaceuticals for treatment of eye diseases comprising using the agents, use of the agents in manufacture of pharmaceuticals for treatment of eye diseases and methods for treating eye diseases comprising administering the agents or the pharmaceutical compositions. The eye diseases treated by the present invention include particularly glaucoma, especially normal tension glaucoma, or retinitis pigmentosa. The present invention provides the compound of formula (I) wherein R is as defined in the description.Type: GrantFiled: September 30, 2011Date of Patent: December 8, 2015Assignees: Daito Chemix Corporation, Kyoto UniversityInventors: Akira Kakizuka, Seiji Hori, Hanako Ikeda, Nagahisa Yoshimura, Noriko Nakano, Toshiyuki Shudo, Tomohiro Fuchigami
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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: 9004685Abstract: An image processing apparatus acquires a tomographic image of an eye to be examined. The image processing apparatus quantifies a distortion in a region determined from the tomographic image. The region includes a photoreceptor layer or a retinal pigment epithelium.Type: GrantFiled: February 20, 2013Date of Patent: April 14, 2015Assignee: Canon Kabushiki KaishaInventors: Yoshihiko Iwase, Makoto Sato, Akihito Uji, Nagahisa Yoshimura
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Publication number: 20140148416Abstract: The present invention provides agents effective to treat eye diseases, pharmaceutical compositions comprising them, methods for preparing pharmaceuticals for treatment of eye diseases comprising using the agents, use of the agents in manufacture of pharmaceuticals for treatment of eye diseases and methods for treating eye diseases comprising administering the agents or the pharmaceutical compositions. The eye diseases treated by the present invention include particularly glaucoma, especially normal tension glaucoma, or retinitis pigmentosa. The present invention provides the compound of formula (I) wherein R is as defined in the description.Type: ApplicationFiled: September 30, 2011Publication date: May 29, 2014Applicants: KYOTO UNIVERSITY, DAITO CHEMIX CORPORATIONInventors: Akira Kakizuka, Seiji Hori, Hanako Ikeda, Nagahisa Yoshimura, Noriko Nakano, Toshiyuki Shudo, Tomohiro Fuchigami
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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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Publication number: 20130265543Abstract: An image processing apparatus acquires a tomographic image of an eye to be examined. The image processing apparatus quantifies a distortion in a region determined from the tomographic image. The region includes a photoreceptor layer or a retinal pigment epithelium.Type: ApplicationFiled: February 20, 2013Publication date: October 10, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Yoshihiko Iwase, Makoto Sato, Akihito Uji, Nagahisa Yoshimura
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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