Patents by Inventor Keita OKAYAMA
Keita OKAYAMA 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: 20240046819Abstract: A heart model includes a main body formed from an elastic material and including a left atrium and a left ventricle, with a mitral valve installed at a boundary portion between the left atrium and the left ventricle; and a vena cava provided in the main body, wherein the mitral valve includes an anterior leaflet and a posterior leaflet, both the leaflets extending to the left ventricle side and capable of opening and closing, and the anterior leaflet and the posterior leaflet are each provided on a tip side with a plurality of string-shaped members extending into the left ventricle.Type: ApplicationFiled: October 20, 2023Publication date: February 8, 2024Applicants: OSAKA UNIVERSITY, JMC CORPORATIONInventors: Keita OKAYAMA, Yasushi SAKATA, Daichi WATANABE, Makoto INADA
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Publication number: 20240021104Abstract: A catheter simulator includes a container capable of accommodating a liquid in an accommodation part surrounded by side walls and a bottom part; a cerebral blood vessel model held in the container in a state of accommodating a liquid; a pump connected to the container and circulating the liquid inside the cerebral blood vessel model held therein; and a holder provided on the side walls of the container and the cerebral blood vessel model and holding the cerebral blood vessel model in a state of having the container filled with the liquid, wherein the holder includes a first holding part holding an end of an ascending aorta of the cerebral blood vessel model, and a second holding part holding an end of a descending aorta of the cerebral blood vessel model.Type: ApplicationFiled: September 28, 2023Publication date: January 18, 2024Applicants: OSAKA UNIVERSITY, JMC CORPORATIONInventors: Keita OKAYAMA, Yasushi SAKATA, Daichi WATANABE, Makoto INADA
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Patent number: 11663929Abstract: A heart model is retained in a container for a catheter simulator. The container includes an accommodating unit for accommodating a liquid, having side walls and a bottom surface, a connection unit attached to one of the side walls and retaining the heart model, and an installation part provided on one of the side walls. The installation part is configured to insert a catheter from an outside of the container into the simulated blood vessel of the heart model. The connection unit includes a holding protrusion protruding inside the accommodating unit, and a communicating hole. A front end of the holding protrusion is open so that the heart model is detachable from and reattachable to the holding protrusion by inserting and extracting a terminal of the heart model.Type: GrantFiled: January 21, 2021Date of Patent: May 30, 2023Assignees: OSAKA UNIVERSITY, JMC CORPORATION, FUYO CORPORATIONInventors: Keita Okayama, Yasushi Sakata, Shinsuke Nanto, Daichi Watanabe, Makoto Inada, Munekuni Sato
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Patent number: 11559196Abstract: A flexible endoscope of the present invention includes a catheter portion and a connection plug. The catheter portion includes an image guide, a light guide, and a catheter tube that surrounds the image guide and the light guide in a longitudinal direction, and the connection plug includes a hollow cover that accommodates the proximal end of the catheter tube, a flexible tube that protrudes from the hollow cover and through which the catheter tube is passed, a first connection terminal that is connected to the light guide extending from the proximal end of the catheter tube, and a second connection terminal that is connected to the image guide extending from the proximal end of the catheter tube. The image guide and the light guide are slidable inside the catheter tube, and at least one of the image guide and the light guide is arranged curved inside the hollow cover of the connection plug.Type: GrantFiled: March 14, 2018Date of Patent: January 24, 2023Assignees: OSAKA UNIVERSITY, SUMITA OPTICAL GLASS, INC.Inventors: Keita Okayama, Shinsuke Nanto, Hiroya Hoshi
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Publication number: 20230005390Abstract: The present invention is a heart model that is used at the time of performing a simulation of an operation for installing a leadless pacemaker in the inner part or a simulation of a myocardial examination method of collecting myocardial tissue, and is formed by means of a material having elasticity. The heart model has a main body having a right atrium, a right ventricle, a left atrium, and a left ventricle in the inner part; an inferior vena cava provided in the main body and allowing insertion therethrough of a catheter holding a leadless pacemaker; and a holder detachably provided inside the main body and including a flexible part capable of locking a locking part of a leadless pacemaker.Type: ApplicationFiled: September 8, 2022Publication date: January 5, 2023Inventors: Keita OKAYAMA, Yasushi SAKATA, Daichi WATANABE, Makoto INADA
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Publication number: 20210378490Abstract: A plug for endoscope includes a flexible tube-shaped sheath through which a plurality of wires are inserted. The plurality of wires is connected to an insertion tip portion having an image capturing portion. The plug for endoscope includes a housing having a substrate accommodation portion and a sheath introduced portion. The substrate accommodation portion accommodates a substrate, a base end aperture portion of the sheath passed through an opening of the housing is arranged in the sheath introduced portion, and a part of the plurality of wires derived from the base end aperture portion is connected to the substrate.Type: ApplicationFiled: August 24, 2021Publication date: December 9, 2021Applicants: OSAKA UNIVERSITY, PANASONIC i-PRO SENSING SOLUTIONS CO., LTD.Inventors: Keita OKAYAMA, Shinsuke NANTO, Seiji HIGASHIYAMA, Makoto KAMIOKA
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Patent number: 11195436Abstract: An organ model for a catheter simulator is formed from elastic materials, and a heart model for a catheter simulator includes a main body of heart and coronary arteries laid along the surface of the main body of heart, in which a portion of the coronary arteries is attachable and detachable.Type: GrantFiled: April 15, 2019Date of Patent: December 7, 2021Assignees: OSAKA UNIVERSITY, JMC CORPORATION, FUYO CORPORATIONInventors: Keita Okayama, Yasushi Sakata, Daichi Watanabe, Makoto Inada, Munekuni Sato
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Patent number: 11151903Abstract: An imaging method for a catheter having a heart model, the heart model being installed in a container in a state of having the container filled with a liquid, and being provided with coronary arteries and an aorta. The imaging method includes causing a chemical reaction between an injection agent injected into the coronary arteries through a catheter, and the liquid in the container, and changing the color of the injection agent to the same color as that of the liquid.Type: GrantFiled: July 15, 2020Date of Patent: October 19, 2021Assignees: OSAKA UNIVERSITY, JMC CORPORATIONInventors: Keita Okayama, Shinsuke Nanto, Yasushi Sakata, Daichi Watanabe, Makoto Inada, Munekuni Sato
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Patent number: 11122963Abstract: Plug for endoscope includes a flexible tube-shaped sheath through which a plurality of wires are inserted. The plurality of wires is connected to an insertion tip portion having an image capturing portion. The plug includes a housing having a substrate accommodation portion and a sheath introduced portion. The substrate accommodation portion accommodates a substrate, a base end aperture portion of the sheath passed through an opening of the housing is arranged in the sheath introduced portion, and a part of the plurality of wires derived from the base end aperture portion is connected to the substrate. A liquid intrusion prevention wall is provided to stand on a bottom wall of the housing, and the bottom wall is arranged under the base end aperture portion of the sheath in a substantially vertical direction, and the substrate accommodation portion and the sheath introduced portion are spatially isolated from each other.Type: GrantFiled: September 14, 2018Date of Patent: September 21, 2021Assignees: OSAKA UNIVERSITY, PANASONIC I-PRO SENSING SOLUTIONS CO., LTD.Inventors: Keita Okayama, Shinsuke Nanto, Seiji Higashiyama, Makoto Kamioka
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Publication number: 20210142695Abstract: A heart model is retained in a container for a catheter simulator. The container includes an accommodating unit for accommodating a liquid, having side walls and a bottom surface, a connection unit attached to one of the side walls and retaining the heart model, and an installation part provided on one of the side walls. The installation part is configured to insert a catheter from an outside of the container into the simulated blood vessel of the heart model. The connection unit includes a holding protrusion protruding inside the accommodating unit, and a communicating hole. A front end of the holding protrusion is open so that the heart model is detachable from and reattachable to the holding protrusion by inserting and extracting a terminal of the heart model.Type: ApplicationFiled: January 21, 2021Publication date: May 13, 2021Inventors: Keita OKAYAMA, Yasushi SAKATA, Shinsuke NANTO, Daichi WATANABE, Makoto INADA, Munekuni SATO
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Patent number: 10937337Abstract: A container for a catheter simulator includes an accommodating unit for accommodating a liquid, the accommodating unit being defined by side walls and a bottom face. On the side walls, there are formed connection units capable of retaining any one of the heart models selected from a four-chamber heart model, a coronary artery model, and a Transcatheter Aortic Valve Implantation model, the heart model being installed in the accommodating unit in a state of having the accommodating unit filled with a liquid; and installation parts for inserting a catheter from the outside of the container into simulated blood vessels of the heart model.Type: GrantFiled: September 28, 2017Date of Patent: March 2, 2021Assignees: OSAKA UNIVERSITY, JMC CORPORATION, FUYO CORPORATIONInventors: Keita Okayama, Yasushi Sakata, Shinsuke Nanto, Daichi Watanabe, Makoto Inada, Munekuni Sato
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Publication number: 20200349865Abstract: An imaging method for a catheter having a heart model, the heart model being installed in a container in a state of having the container filled with a liquid, and being provided with coronary arteries and an aorta. The imaging method includes causing a chemical reaction between an injection agent injected into the coronary arteries through a catheter, and the liquid in the container, and changing the color of the injection agent to the same color as that of the liquid.Type: ApplicationFiled: July 15, 2020Publication date: November 5, 2020Inventors: Keita OKAYAMA, Shinsuke NANTO, Yasushi SAKATA, Daichi WATANABE, Makoto INADA, Munekuni SATO
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Patent number: 10755601Abstract: A catheter simulator (10) of the invention has a container (20) filled with a liquid; an elastic heart model (30) installed in a floating state in the liquid with which the container (20) is filled; and a pump (50) connected to the heart model (30). The pump (50) is connected to an apex section of the heart model and produces a pulsatile flow from the apex section toward an aorta. Coronary arteries (33) provided on the surface of a main body (30A) of the heart model (30), pulsate together with the main body as a result of the pulsatile flow flowing from the pump (50).Type: GrantFiled: December 22, 2016Date of Patent: August 25, 2020Assignees: OSAKA UNIVERSITY, JMC CORPORATIONInventors: Keita Okayama, Shinsuke Nanto, Yasushi Sakata, Daichi Watanabe, Makoto Inada, Munekuni Sato
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Publication number: 20200015671Abstract: A flexible endoscope of the present invention includes a catheter portion and a connection plug. The catheter portion includes an image guide, a light guide, and a catheter tube that surrounds the image guide and the light guide in a longitudinal direction, and the connection plug includes a hollow cover that accommodates the proximal end of the catheter tube, a flexible tube that protrudes from the hollow cover and through which the catheter tube is passed, a first connection terminal that is connected to the light guide extending from the proximal end of the catheter tube, and a second connection terminal that is connected to the image guide extending from the proximal end of the catheter tube. The image guide and the light guide are slidable inside the catheter tube, and at least one of the image guide and the light guide is arranged curved inside the hollow cover of the connection plug.Type: ApplicationFiled: March 14, 2018Publication date: January 16, 2020Inventors: Keita Okayama, Shinuke Nanto, Hiroya Hoshi
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Publication number: 20190244544Abstract: An organ model for a catheter simulator is formed from elastic materials, and a heart model for a catheter simulator includes a main body of heart and coronary arteries laid along the surface of the main body of heart, in which a portion of the coronary arteries is attachable and detachable.Type: ApplicationFiled: April 15, 2019Publication date: August 8, 2019Inventors: Keita OKAYAMA, Yasushi SAKATA, Daichi WATANABE, Makoto INADA, Munekuni SATO
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Patent number: 10360813Abstract: A pulsatile flow generating pump for a catheter simulator, which makes it possible to conveniently perform catheter operation training is provided. The pump (10) includes a cylinder (13) provided inside with a piston performing a reciprocating motion; a driving motor (15) causing the piston to perform a reciprocating motion; a link mechanism (19) converting the rotational motion of the driving motor (15) to the reciprocating motion of the piston; an extrusion port (86b), through which a liquid inside the cylinder is extruded to the outside by the piston; a suction port (86a), through which a liquid from the outside is sucked into the cylinder; and a control unit 70 for controlling the rotation of the driving motor 15. The control unit 70 controls the driving motor 15 so as to output pulsatile flows at a rate of 20 times to 200 times per minute.Type: GrantFiled: April 8, 2016Date of Patent: July 23, 2019Assignees: OSAKA UNIVERSITY, JMC CORPORATION, FUYO CORPORATIONInventors: Keita Okayama, Yasushi Sakata, Daichi Watanabe, Makoto Inada, Munekuni Sato
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Publication number: 20190082938Abstract: Plug for endoscope includes a flexible tube-shaped sheath through which a plurality of wires are inserted. The plurality of wires is connected to an insertion tip portion having an image capturing portion. The plug includes a housing having a substrate accommodation portion and a sheath introduced portion. The substrate accommodation portion accommodates a substrate, a base end aperture portion of the sheath passed through an opening of the housing is arranged in the sheath introduced portion, and a part of the plurality of wires derived from the base end aperture portion is connected to the substrate. A liquid intrusion prevention wall is provided to stand on a bottom wall of the housing, and the bottom wall is arranged under the base end aperture portion of the sheath in a substantially vertical direction, and the substrate accommodation portion and the sheath introduced portion are spatially isolated from each other.Type: ApplicationFiled: September 14, 2018Publication date: March 21, 2019Applicants: OSAKA UNIVERSITY, PANASONIC CORPORATIONInventors: Keita OKAYAMA, Shinsuke NANTO, Seiji HIGASHIYAMA, Makoto KAMIOKA
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Publication number: 20180018904Abstract: A container 10 for a catheter simulator comprising an accommodating unit 10a for accommodating a liquid, the accommodating unit 10a being defined by side walls 11 to 14 and a bottom face 15. On the side walls, there are formed connection units 11a and 11c capable of retaining any one of the heart models selected from a four-chamber heart model, a coronary artery model, and a TAVI model, the heart model being installed in the accommodating unit 10a in a state of having the accommodating unit filled with a liquid; and installation parts 11d, 12a, and 13a for inserting a catheter from the outside of the container into simulated blood vessels of the heart model.Type: ApplicationFiled: September 28, 2017Publication date: January 18, 2018Inventors: Keita OKAYAMA, Yasushi SAKATA, Shinsuke NANTO, Daichi WATANABE, Makoto INADA, Munekuni SATO
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Publication number: 20170270830Abstract: A stent is formed of a shape-memory alloy and is to be inserted and placed inside a three-dimensional model of a biological organ manufactured for training, under a state in which the stent is mounted on a balloon of a balloon catheter. The stent is expandable under a room temperature environment. When heated to a predetermined temperature higher than room temperature, the stent is contracted until an inner diameter of the stent becomes smaller than an outer diameter of the balloon in a contracted state, and returns to an original shape thereof.Type: ApplicationFiled: January 11, 2017Publication date: September 21, 2017Inventors: Keita OKAYAMA, Yasushi SAKATA, Keigo YANAGISHIMA, Shigeru AONUMA, You SATOU, Kouhei YAZAKI, Junji OOWA
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Publication number: 20170103682Abstract: A catheter simulator (10) of the invention has a container (20) filled with a liquid; an elastic heart model (30) installed in a floating state in the liquid with which the container (20) is filled; and a pump (50) connected to the heart model (30). The pump (50) is connected to an apex section of the heart model and produces a pulsatile flow from the apex section toward an aorta. Coronary arteries (33) provided on the surface of a main body (30A) of the heart model (30), pulsate together with the main body as a result of the pulsatile flow flowing from the pump (50).Type: ApplicationFiled: December 22, 2016Publication date: April 13, 2017Inventors: Keita OKAYAMA, Shinsuke NANTO, Yasushi SAKATA, Daichi WATANABE, Makoto INADA, Munekuni SATO