Patents by Inventor Youichirou Kuwano
Youichirou Kuwano 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: 10835317Abstract: Disclosed is a treatment device for occluding a body lumen, including: an elongated body which can be inserted into the body lumen; a flat portion forming section which is supported by the elongated body, is expandable widthwise on a more distal side than the elongated body, and deforms the body lumen into a form having a flat portion at a distal portion of the flat portion forming section upon the expansion of the flat portion forming section within the body lumen; and an administering section which administers, toward the flat portion formed by the flat portion forming section, a treatment which acts to occlude the flat portion.Type: GrantFiled: March 19, 2015Date of Patent: November 17, 2020Assignee: TERUMO KABUSHIKI KAISHAInventors: Katsuhiko Shimizu, Takashi Kitaoka, Youichirou Kuwano
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Publication number: 20200046947Abstract: An air removal mechanism includes a body having a hollow portion capable of storing a liquid. In a state where the body is mounted on an introducer sheath, a medical device to be inserted into the introducer sheath is insertable via the hollow portion. The body has an injection path which communicates with the hollow portion and on which an outlet is open toward a valve body.Type: ApplicationFiled: October 18, 2019Publication date: February 13, 2020Applicant: TERUMO KABUSHIKI KAISHAInventors: Takayuki MORI, Kinya HARADA, Wataru KARINO, Katsuhiko SHIMIZU, Youichirou KUWANO
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Patent number: 9987026Abstract: A medical instrument is disclosed for crushing a thrombus present in a pulmonary artery of a living body by an ultrasonic vibration. The medical instrument includes an elongated main body section capable of being inserted into an airway of the living body, and an ultrasonic oscillation section which can be inserted into the living body by the main body section and which oscillates the ultrasonic vibration inside the living body. By the medical instrument, a thrombus present in a pulmonary artery can be rapidly crushed, whereby a therapeutic effect on pulmonary embolism can be obtained.Type: GrantFiled: August 7, 2015Date of Patent: June 5, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Katsuhiko Shimizu, Youichirou Kuwano
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Patent number: 9962215Abstract: Disclosed is a treatment device for occluding a body lumen, including: a hollow shaft which can be inserted into the body lumen; a flat portion forming section which has a pair of arms inserted in the shaft, the arms capable of being protruded from and retracted into a distal end opening of the shaft and expandable widthwise, and which deforms the body lumen into a form having a flat portion as the pair of arms is expanded within the body lumen; and a heating section which is extendable and contractible in a width direction of the flat portion forming section, is extended as the pair of arms is expanded within the body lumen, and heats the flat portion.Type: GrantFiled: March 19, 2015Date of Patent: May 8, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Katsuhiko Shimizu, Youichirou Kuwano
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Publication number: 20170189051Abstract: A blood vessel dissecting device method involves inserting a dissecting device into a living body, advancing the dissecting device along a vein, and dissecting the vein and tissue bound to the vein from other surrounding tissue.Type: ApplicationFiled: December 31, 2015Publication date: July 6, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Tatsunori FUJII, Seiichi OTSUBO, Katsunori EBATA, Youichirou KUWANO
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Publication number: 20170189055Abstract: A blood vessel dissecting device method involves inserting a dissecting device into a living body, advancing the dissecting device along a vein, and dissecting the vein and tissue bound to the vein from other surrounding tissue.Type: ApplicationFiled: January 7, 2016Publication date: July 6, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Satoru Suehara, Makoto Jinno, Tatsunori Fujii, Youichirou Kuwano
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Publication number: 20150342625Abstract: A medical instrument is disclosed for crushing a thrombus present in a pulmonary artery of a living body by an ultrasonic vibration. The medical instrument includes an elongated main body section capable of being inserted into an airway of the living body, and an ultrasonic oscillation section which can be inserted into the living body by the main body section and which oscillates the ultrasonic vibration inside the living body. By the medical instrument, a thrombus present in a pulmonary artery can be rapidly crushed, whereby a therapeutic effect on pulmonary embolism can be obtained.Type: ApplicationFiled: August 7, 2015Publication date: December 3, 2015Applicant: TERUMO KABUSHIKI KAISHAInventors: Katsuhiko SHIMIZU, Youichirou KUWANO
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Publication number: 20150265332Abstract: Disclosed is a treatment device for occluding a body lumen, including: a hollow shaft which can be inserted into the body lumen; a flat portion forming section which has a pair of arms inserted in the shaft, the arms capable of being protruded from and retracted into a distal end opening of the shaft and expandable widthwise, and which deforms the body lumen into a form having a flat portion as the pair of arms is expanded within the body lumen; and a heating section which is extendable and contractible in a width direction of the flat portion forming section, is extended as the pair of arms is expanded within the body lumen, and heats the flat portion.Type: ApplicationFiled: March 19, 2015Publication date: September 24, 2015Applicant: TERUMO KABUSHIKI KAISHAInventors: Katsuhiko SHIMIZU, Youichirou KUWANO
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Publication number: 20150265350Abstract: Disclosed is a treatment device for occluding a body lumen, including: an elongated body which can be inserted into the body lumen; a flat portion forming section which is supported by the elongated body, is expandable widthwise on a more distal side than the elongated body, and deforms the body lumen into a form having a flat portion at a distal portion of the flat portion forming section upon the expansion of the flat portion forming section within the body lumen; and an administering section which administers, toward the flat portion formed by the flat portion forming section, a treatment which acts to occlude the flat portion.Type: ApplicationFiled: March 19, 2015Publication date: September 24, 2015Applicant: TERUMO KABUSHIKI KAISHAInventors: Katsuhiko SHIMIZU, Takashi KITAOKA, Youichirou KUWANO
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Publication number: 20150258324Abstract: A tube connection structure is disclosed, which includes a first connector and a second connector that are fitted together. The first connector includes an outer cylinder; a communicating section which is formed with a liquid passage in which a liquid can circulate in a fitted state, and an annular valve body which is provided around the communicating section and seals an outer cylinder opening portion in a non-fitted state. The second connector includes an inner cylinder which pushes the annular valve body in the fitted state, an inner valve body which seals an inner cylinder opening portion in the non-fitted state and is pushed by the communicating section advancing into the inner cylinder through the inner cylinder opening portion in the fitted state, and a first seal member which is provided at least on an inner peripheral surface of the inner cylinder opening portion.Type: ApplicationFiled: March 24, 2015Publication date: September 17, 2015Applicant: TERUMO KABUSHIKI KAISHAInventors: Takahiro CHIDA, Kyouta KIMURA, Youichirou KUWANO
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Publication number: 20150250536Abstract: A method of treating a varicose vein involves inserting an assembly into the vein, the assembly being comprised of an elongated body possessing a distal end at which is located an energy emitting member having a shape; contacting the inner wall of the vein with the distal end of the energy emitting member having the shape such that the distal end of the energy emitting member contacts the inner wall along a line; rotating the energy emitting member while the energy emitting member contacts the inner wall along the line; and occluding the vein by applying energy from the energy emitting member to the inner wall of the veinType: ApplicationFiled: March 10, 2014Publication date: September 10, 2015Applicant: TERUMO KABUSHIKI KAISHAInventors: Katsuhiko Shimizu, Takashi Kitaoka, Youichirou Kuwano
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Patent number: 9119936Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portion.Type: GrantFiled: August 12, 2013Date of Patent: September 1, 2015Assignee: TERUMO KABUSHIKI KAISHAInventors: Youichi Itou, Yasunori Yamashita, Youichirou Kuwano
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Publication number: 20130331820Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portionType: ApplicationFiled: August 12, 2013Publication date: December 12, 2013Applicant: Terumo Kabushiki KaishaInventors: Youichi Itou, Yasunori Yamashita, Youichirou Kuwano
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Patent number: 8523841Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portion.Type: GrantFiled: March 4, 2011Date of Patent: September 3, 2013Assignee: Terumo Kabushiki KaishaInventors: Youichi Itou, Yasunori Yamashita, Youichirou Kuwano
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Publication number: 20110224650Abstract: A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portionType: ApplicationFiled: March 4, 2011Publication date: September 15, 2011Applicant: Terumo Kabushiki KaishaInventors: Youichi ITOU, Yasunori Yamashita, Youichirou Kuwano