Patents by Inventor Yuuya KANAZAWA
Yuuya KANAZAWA 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: 9295813Abstract: A guidewire includes a linear portion, a curved portion that is provided distally of the linear portion, a boundary portion that is provided between the linear portion and the curved portion, a lubricant portion that is provided on a surface of the linear portion, and a low lubricant portion that is provided at least on a surface of the boundary portion disposed on a side of the guidewire opposite of a direction toward which the curved portion is curved, a lubricating ability of the low lubricant portion being lower than that of the lubricant portion.Type: GrantFiled: October 2, 2013Date of Patent: March 29, 2016Assignee: ASAHI INTECC CO., LTD.Inventors: Yuuya Kanazawa, Satoru Murata
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Patent number: 9126021Abstract: A guidewire includes a first junction that joins a distal end of an inner coil body and a portion of a core shaft positioned a non-zero distance away from a distal end toward a proximal end; a second junction that joins a proximal end of the inner coil body and the core shaft; a third junction that joins a distal end of the outer coil body and the distal end of the core shaft; and a fourth junction that joins a proximal end of the outer coil body and the core shaft. The outer coil body includes a tapered coil portion and a uniform-diameter coil portion. The inner coil body is disposed inside the uniform-diameter coil portion of the outer coil body. The inner coil body is joined to the core shaft at only the first and second junctions but is not joined to the outer coil body.Type: GrantFiled: June 25, 2013Date of Patent: September 8, 2015Assignee: ASAHI INTECC CO., LTD.Inventor: Yuuya Kanazawa
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Publication number: 20140188004Abstract: A guidewire includes a linear portion, a curved portion that is provided distally of the linear portion, a boundary portion that is provided between the linear portion and the curved portion, a lubricant portion that is provided on a surface of the linear portion, and a low lubricant portion that is provided at least on a surface of the boundary portion disposed on a side of the guidewire opposite of a direction toward which the curved portion is curved, a lubricating ability of the low lubricant portion being lower than that of the lubricant portion.Type: ApplicationFiled: October 2, 2013Publication date: July 3, 2014Applicant: ASAHI INTECC CO., LTD.Inventors: Yuuya KANAZAWA, Satoru MURATA
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Patent number: 8758269Abstract: A guidewire includes a core shaft, and a coiled body wound around the outer circumferential surface of the core shaft. A bulged portion is provided at the tip portion of the core shaft. The front end of the coiled body is bonded to the front end of the core shaft with a bonding portion. The bonding portion is provided to enclose the bulged portion provided at the tip portion of the core shaft.Type: GrantFiled: January 20, 2012Date of Patent: June 24, 2014Assignee: Asahi Intecc Co., Ltd.Inventors: Naohiko Miyata, Makoto Nishigishi, Hideaki Maki, Tadahiro Koike, Yuuya Kanazawa
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Publication number: 20140031719Abstract: A guidewire includes a first junction that joins a distal end of an inner coil body and a portion of a core shaft positioned a non-zero distance away from a distal end toward a proximal end; a second junction that joins a proximal end of the inner coil body and the core shaft; a third junction that joins a distal end of the outer coil body and the distal end of the core shaft; and a fourth junction that joins a proximal end of the outer coil body and the core shaft. The outer coil body includes a tapered coil portion and a uniform-diameter coil portion. The inner coil body is disposed inside the uniform-diameter coil portion of the outer coil body. The inner coil body is joined to the core shaft at only the first and second junctions but is not joined to the outer coil body.Type: ApplicationFiled: June 25, 2013Publication date: January 30, 2014Applicant: ASAHI INTECC CO., LTD.Inventor: Yuuya KANAZAWA
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Publication number: 20120323145Abstract: A guidewire includes a core shaft having front and rear sections including a front end portion and a rear section, respectively, an outer coil body that covers the front section, and an inner coil body that is disposed within the outer coil body between the outer coil body and the core shaft, and covers the front section. The outer coil body includes a cylindrical large-diameter section positioned adjacent the rear end portion, a cylindrical small-diameter section positioned adjacent the front end portion, and a tapered section that connects the cylindrical large-diameter section to the cylindrical small-diameter section with a connecting portion provided therebetween, the tapered section having a diameter that decreases from an end adjacent the rear end portion to an end adjacent the front end portion. The inner coil body is disposed at least in the tapered section.Type: ApplicationFiled: June 4, 2012Publication date: December 20, 2012Applicant: ASAHI INTECC CO., LTD.Inventors: Satoshi NAGANO, Hideaki MAKI, Yuuya KANAZAWA
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Publication number: 20120197159Abstract: A guidewire includes a core shaft, and a coiled body wound around the outer circumferential surface of the core shaft. A bulged portion is provided at the tip portion of the core shaft. The front end of the coiled body is bonded to the front end of the core shaft with a bonding portion. The bonding portion is provided to enclose the bulged portion provided at the tip portion of the core shaft.Type: ApplicationFiled: January 20, 2012Publication date: August 2, 2012Applicant: ASAHI INTECC CO., LTD.Inventors: Naohiko MIYATA, Makoto NISHIGISHI, Hideaki MAKI, Tadahiro KOIKE, Yuuya KANAZAWA
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Publication number: 20120029476Abstract: A guidewire includes a core shaft and a coil body wound around an outer periphery of the core shaft. A distal end portion of the core shaft and a distal end portion of the coil body are fixed to each other with a most distal end portion. The coil outer diameter of the coil body in the most distal end portion is nonuniform.Type: ApplicationFiled: June 27, 2011Publication date: February 2, 2012Applicant: ASAHI INTECC CO., LTD.Inventor: Yuuya KANAZAWA