Patents by Inventor Taiga Nakano
Taiga Nakano 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: 10117670Abstract: A treatment method and medical device are disclosed for cutting a substance inside a body lumen. The medical device includes a drive shaft that is rotatable; a strut that is rotatably connected to a distal side of the drive shaft, that extends along a rotation axis, and whose central portion is expandable radially outward; and a support portion that is rotatably connected to the distal side of the drive shaft, that is formed in a mesh shape and a tubular shape while including multiple gaps, at least a portion of which is positioned on a radially inner side of the strut, and that is expandable radially outward by a central portion in a direction extending along the rotation axis being bent.Type: GrantFiled: November 3, 2015Date of Patent: November 6, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Junichi Kobayashi, Tomonori Hatta, Taiga Nakano
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Patent number: 10117669Abstract: A treatment medical and medical device are disclosed for cutting a substance inside a body lumen. The medical device includes a drive shaft that is rotatable; a strut that is rotatably connected to a distal side of the drive shaft, that extends along a rotation axis, and whose central portion is expandable radially outward; and a support portion that is rotatably connected to the distal side of the drive shaft, that is formed in a mesh shape and a tubular shape while including multiple gaps, at least a portion of which is positioned on a radially inner side of the strut, and that is expandable radially outward by a central portion in a direction extending along the rotation axis being bent.Type: GrantFiled: November 3, 2015Date of Patent: November 6, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Junichi Kobayashi, Tomonori Hatta, Taiga Nakano
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Patent number: 10058309Abstract: Disclosed herein is a medical instrument used for harvesting biological tissues of a predetermined biological organ and a medical system. The medical instrument includes: a main body portion that has an elongated shape and has a distal part having a helical groove formed in an outer surface, a fluid lumen through which fluid is allowed to flow and pass, and a through-hole communicating with the fluid lumen and the outer surface of the distal part, at least part of the distal part being stuck into the biological organ; and a tubular member that has an insertion lumen into which the main body portion is inserted movably in axial direction and forms a gap through which fluid is allowed to flow and pass between the main body portion and the tubular member in a state in which the main body portion is inserted in the insertion lumen.Type: GrantFiled: September 27, 2012Date of Patent: August 28, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Tomonori Hatta, Wataru Karino, Taiga Nakano
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Patent number: 10022139Abstract: A medical device and collection method are disclosed which can effectively aspirate and remove substances collected inside a filter, and prevent the collected substances from dropping down from a filter portion. The collection method includes inserting a medical device having a filter portion in a contracted state into the living body lumen, installing the filter portion in the living body lumen by bringing the filter portion into the expanded state; collecting the substances inside the living body lumen using the filter portion; inserting an aspiration catheter which applies an aspiration force to a distal opening via a lumen formed inside the aspiration catheter, into the living body lumen along the shaft portion, and fitting the distal opening into the concave portion of the filter portion; aspirating the substances collected inside the concave portion using the aspiration catheter; and removing the filter portion from the inside of the living body lumen.Type: GrantFiled: July 9, 2015Date of Patent: July 17, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Junichi Kobayashi, Tomonori Hatta, Taiga Nakano
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Publication number: 20180177514Abstract: A method is disclosed for collecting substances inside a living body lumen using a medical device having an elongated shaft, a filter portion, and a support portion. The method includes inserting the medical device into the living body lumen; inserting an atherectomy device through the elongated shaft of the medical device; scraping a substance with the atherectomy device; collecting the substance using the filter portion of the medical device; and aspirating the substance by an aspiration catheter while the aspiration catheter is moved forward and rearward relative to the filter portion inside the filter portion.Type: ApplicationFiled: January 25, 2018Publication date: June 28, 2018Applicant: TERUMO KABUSHIKI KAISHAInventors: Junichi KOBAYASHI, Tomonori HATTA, Taiga NAKANO
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Publication number: 20180116689Abstract: A medical device is disclosed for cutting substances inside a body lumen, the medical device including a rotatable tubular drive shaft; a treatment member arranged on a distal side of the drive shaft; and a device handle configured to retract the drive shaft, the device handle comprising: a fixed guide cover disposed to cover the drive shaft and an outer sheath disposed to cover the guide cover; and an annular gap between the outer sheath and the guide cover on a proximal side of a fluid connection configured to supply a physiological salt solution into the outer sheath.Type: ApplicationFiled: October 27, 2016Publication date: May 3, 2018Applicant: TERUMO KABUSHIKI KAISHAInventor: Taiga NAKANO
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Publication number: 20170354435Abstract: A treatment method and medical device are disclosed for cutting a substance inside a body lumen. The medical device for cutting substances inside a body lumen, the medical device including a rotatable tubular drive shaft; a treatment member connected to a distal side of the drive shaft; an elongated tube extending through the drive shaft; and a bearing member connecting a distal side of the treatment member and the elongated tube.Type: ApplicationFiled: June 13, 2016Publication date: December 14, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Tomonori HATTA, Junichi KOBAYASHI, Taiga NAKANO
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Publication number: 20170348019Abstract: A medical device and a treatment method are disclosed for cutting substances inside a body lumen. The medical device includes a rotatable tubular drive shaft; an elongated tube extended through the drive shaft; a bearing placed at the proximal end of elongated tube; and a rotation transmitting member fixed on an outer surface of the elongated tube, wherein the rotation transmitting member is movable between a proximal end of the drive shaft and the bearing.Type: ApplicationFiled: June 6, 2016Publication date: December 7, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Taiga NAKANO, Tomonori HATTA, Junichi KOBAYASHI
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Patent number: 9827000Abstract: A treatment instrument for medical use includes a tubular insertion portion that includes a curvable flexible part, the tubular insertion portion being insertable into a body of a patient; and a dilating body that is provided at an outer circumference of the flexible part, the dilating body being configured to dilate in a radial direction relative to the flexible part. The tubular insertion portion includes a reduced-diameter part that is provided at a distal end of the tubular insertion portion in an axial direction, the reduced-diameter part having an outer diameter that is smaller than an outer diameter of the tubular insertion portion at a location proximal of the reduced-diameter part. A distal part of the dilating body is fixed to at least the reduced-diameter part.Type: GrantFiled: October 17, 2014Date of Patent: November 28, 2017Assignee: TERUMO KABUSHIKI KAISHAInventors: Satoru Suehara, Taiga Nakano, Kenichi Kumoyama
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Publication number: 20170258488Abstract: A medical device is disclosed for cutting substances inside a body lumen. The medical device includes: a drive shaft that is rotatable; at least one strut that is rotatably connected to a distal side of the drive shaft, the at least one strut extending along a rotation axis, and wherein a central portion of the at least one strut is bent so as to be expandable radially outwardly; and a support portion that is rotatably connected to the distal side of the drive shaft, and wherein the support portion is formed in a mesh shape and a tubular shape while including multiple gaps, at least a portion of which is positioned on a radially inside of the at least one strut, and which is expandable radially outwardly by a central portion in a direction extending along the rotation axis being bent.Type: ApplicationFiled: May 4, 2017Publication date: September 14, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Tomonori HATTA, Junichi KOBAYASHI, Taiga NAKANO
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Publication number: 20170238960Abstract: A medical device for removing a stenosis of a living body lumen includes a drive shaft configured to be driven by an operation at a proximal side thereof and including a treatment member disposed at a distal side thereof, a housing configured to accommodate the proximal side of the drive shaft therein, and a holding member configured to suppress unnecessary movement of the drive shaft. A proximal end of the holding member is fixed to the housing, and an inner surface of the holding member and an outer surface of the drive shaft are slidable relative to one another.Type: ApplicationFiled: December 13, 2016Publication date: August 24, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Tomonori HATTA, Junichi KOBAYASHI, Taiga NAKANO
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Publication number: 20170224463Abstract: A medical device is disclosed for collecting substances inside a body lumen. The medical device includes an elongated shaft portion; a filter portion that has multiple gaps, that is formed in a net shape, that is deformable to be in an expanded state where the filter portion has a basket shape so as to form a concave portion, and that is deformable from the expanded state to be in a contracted state where an opening end portion of the concave portion is contracted; and a support portion that is formed to include a gap larger than gaps of the filter portion and that includes an interlock portion interlocked with the opening end portion of the filter portion and a support side connection portion connected to the shaft portion.Type: ApplicationFiled: April 25, 2017Publication date: August 10, 2017Applicant: TERUMO KABUSHIKI KAISHAInventors: Junichi KOBAYASHI, Tomonori HATTA, Taiga NAKANO
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Publication number: 20170189056Abstract: A medical device is disclosed for cutting substances inside a body lumen, the medical device including a rotatable tubular drive shaft; an expandable cutting member arranged on distal side of the drive shaft; an axial moving shaft connected to a distal end of the drive shaft with the cutting member, the axial moving shaft configured to expand and contract the cutting member by axially moving of the axial moving shaft; a handle configured to retract the drive shaft and the axial moving shaft; and an operating member disposed on a different axis with respect to an axis of the axial moving shaft.Type: ApplicationFiled: October 27, 2016Publication date: July 6, 2017Applicant: TERUMO KABUSHIKI KAISHAInventor: Taiga NAKANO
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Publication number: 20160354108Abstract: A medical device for incising a substance inside a biological lumen. The medical device includes a tubular drive shaft that is rotatable, an intermediate portion connected to the drive shaft, at least one strut interlocked with the drive shaft, a tubular linear motion shaft inside of the drive shaft, and a tubular interlock portion. The strut is rotatable with the drive shaft and is expandable radially outward in response to outward expansion of the intermediate portion. The linear motion shaft is movable relative to the drive shaft in the axial direction to cause the strut to expand radially outward. The tubular interlock portion interlocks the drive shaft and the linear motion shaft while maintaining liquid-tight properties. The tubular interlock portion is stretchable in the axial direction.Type: ApplicationFiled: June 2, 2016Publication date: December 8, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Taiga NAKANO, Junichi KOBAYASHI, Tomonori HATTA
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Publication number: 20160354107Abstract: A medical device for incising a substance inside a biological lumen. The medical device includes a rotatable drive shaft, an outer sheath that accommodates the drive shaft, an intermediate portion connected to the drive shaft, at least one strut interlocked with the drive shaft, a linear motion shaft inside of the drive shaft, and a liquid feeding unit. The strut rotates with the drive shaft and is expandable radially outward in response to outward expansion of the intermediate portion. The linear motion shaft is movable relative to the drive shaft in the axial direction to cause the strut to expand radially outward. The liquid feeding unit supplies liquid to a space between the outer sheath and the drive shaft. The drive shaft includes a hole portion penetrating from an inner surface of the drive shaft through to an outer surface of the drive shaft.Type: ApplicationFiled: June 2, 2016Publication date: December 8, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Taiga NAKANO, Junichi KOBAYASHI, Tomonori HATTA
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Publication number: 20160278805Abstract: A treatment method and medical device are disclosed for cutting a substance inside a body lumen. The medical device for cutting substances inside a body lumen including a rotatable tubular drive shaft; an expanding part connected to a distal side of the drive shaft; a cutting part covering the expanding part; and an elongated tube extending through the drive shaft and connected to the expanding part, wherein a distal end of the expanding part is placed distal to a distal end of the cutting part.Type: ApplicationFiled: June 13, 2016Publication date: September 29, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Tomonori HATTA, Junichi KOBAYASHI, Taiga NAKANO
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Publication number: 20160120568Abstract: A treatment method and medical device are disclosed for cutting a substance inside a body lumen. The medical device includes a drive shaft that is rotatable; a strut that is rotatably connected to a distal side of the drive shaft, that extends along a rotation axis, and whose central portion is expandable radially outward; and a support portion that is rotatably connected to the distal side of the drive shaft, that is formed in a mesh shape and a tubular shape while including multiple gaps, at least a portion of which is positioned on a radially inner side of the strut, and that is expandable radially outward by a central portion in a direction extending along the rotation axis being bent.Type: ApplicationFiled: November 3, 2015Publication date: May 5, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Junichi KOBAYASHI, Tomonori HATTA, Taiga NAKANO
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Publication number: 20160120570Abstract: A treatment method and medical device are disclosed for cutting a substance inside a body lumen. The medical device includes a drive shaft that is rotatable; a strut that is rotatably connected to a distal side of the drive shaft, that extends along a rotation axis, and whose central portion is expandable radially outward; and a support portion that is rotatably connected to the distal side of the drive shaft, that is formed in a mesh shape and a tubular shape while including multiple gaps, at least a portion of which is positioned on a radially inner side of the strut, and that is expandable radially outward by a central portion in a direction extending along the rotation axis being bent.Type: ApplicationFiled: November 3, 2015Publication date: May 5, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Junichi KOBAYASHI, Tomonori HATTA, Taiga NAKANO
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Publication number: 20160120565Abstract: A treatment method and medical device are disclosed for cutting a substance inside a body lumen. The medical device includes a drive shaft that is rotatable; a strut that is rotatably connected to a distal side of the drive shaft, that extends along a rotation axis, and whose central portion is expandable radially outward; and a support portion that is rotatably connected to the distal side of the drive shaft, that is formed in a mesh shape and a tubular shape while including multiple gaps, at least a portion of which is positioned on a radially inner side of the strut, and that is expandable radially outward by a central portion in a direction extending along the rotation axis being bent.Type: ApplicationFiled: November 3, 2015Publication date: May 5, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Junichi KOBAYASHI, Tomonori HATTA, Taiga NAKANO
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Publication number: 20160120569Abstract: A treatment medical and medical device are disclosed for cutting a substance inside a body lumen. The medical device includes a drive shaft that is rotatable; a strut that is rotatably connected to a distal side of the drive shaft, that extends along a rotation axis, and whose central portion is expandable radially outward; and a support portion that is rotatably connected to the distal side of the drive shaft, that is formed in a mesh shape and a tubular shape while including multiple gaps, at least a portion of which is positioned on a radially inner side of the strut, and that is expandable radially outward by a central portion in a direction extending along the rotation axis being bent.Type: ApplicationFiled: November 3, 2015Publication date: May 5, 2016Applicant: TERUMO KABUSHIKI KAISHAInventors: Junichi KOBAYASHI, Tomonori HATTA, Taiga NAKANO