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公开(公告)号：US11305094B2
公开(公告)日：2022-04-19
申请号：US17152575
申请日：2021-01-19
发明人： Michi E. Garrison , Tony M. Chou , Scott D. Wilson
IPC分类号： A61M25/01 , A61B17/221 , A61M29/00 , A61M25/00 , A61M25/06 , A61M1/00 , A61B17/22 , A61M5/00 , A61M25/10
摘要： An intravascular access system for facilitation of intraluminal medical procedures within the neurovasculature through an access sheath. The system includes an aspiration or support catheter having a flexible, distal luminal portion having an inner diameter defining a lumen extending between a proximal opening at a proximal end of the luminal portion and a distal opening at a distal end of the luminal portion. The catheter has a rigid spine coupled to at least the proximal end of the luminal portion and extending proximally therefrom. The system includes a dilator having a flexible, distal dilator portion sized to be received within the lumen of the luminal portion. Associated systems, devices, and methods of use are also described.
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公开(公告)号：US11229770B2
公开(公告)日：2022-01-25
申请号：US16530845
申请日：2019-08-02
发明人： Tony M. Chou , Scott D. Wilson , Vera Shinsky
摘要： Methods, systems, and devices for facilitation of intraluminal medical procedures within the neurovasculature including a catheter advancement element an inner diameter that is at least about 0.014″ up to about 0.024″ and an outer diameter having at least one snug point. A difference between the inner diameter of the distal, catheter portion and the outer diameter of the tubular portion at the snug point is no more than about 0.010″. A tip portion located distal to the at least one snug point of the tubular portion has a length and tapers along at least a portion of the length of the tip portion, wherein the tip portion has a distal point located a distance of at least 5 mm proximal from the distal-most end of the catheter advancement element, the distal point having a bending force that is no greater than about 0.05 Newtons.
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公开(公告)号：US11224450B2
公开(公告)日：2022-01-18
申请号：US17321119
申请日：2021-05-14
发明人： Tony M. Chou , Scott D. Wilson
摘要： Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 cm.
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公开(公告)号：US20210259718A1
公开(公告)日：2021-08-26
申请号：US17319943
申请日：2021-05-13
发明人： Scott D. Wilson , Tony M. Chou , Vera Shinsky , Philip Evard
摘要： Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal portion coupled to a proximal end region of the flexible elongate body and extending proximally to a proximal-most end of the catheter advancement element. A hardness of the flexible elongate body transitions proximally towards increasingly harder materials up to the proximal portion forming a first plurality of material transitions. At least a portion of the flexible elongate body is formed of a plurality of layers including a reinforcement layer. An outer diameter of the flexible elongate body is sized to be positioned coaxially within a lumen of a catheter such that a distal tip portion of the flexible elongate body extends distally beyond a distal end of the catheter to aid in delivery of the catheter to an intracranial vessel.
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公开(公告)号：US11065019B1
公开(公告)日：2021-07-20
申请号：US17174194
申请日：2021-02-11
发明人： Tony M. Chou , Scott D. Wilson
摘要： Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72 D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35 D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 cm.
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公开(公告)号：US20210212707A1
公开(公告)日：2021-07-15
申请号：US17174194
申请日：2021-02-11
发明人： Tony M. Chou , Scott D. Wilson
摘要： Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 cm.
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公开(公告)号：US10799669B2
公开(公告)日：2020-10-13
申请号：US15875214
申请日：2018-01-19
发明人： Tony M. Chou , Scott D. Wilson , Kirsten Valley , Vera Shinsky , Philip Evard
摘要： A rapid exchange microcatheter for accessing the intracranial neurovasculature. A side opening through the sidewall is located a first distance proximal to the distal-most tip. A proximal opening located proximal to the side opening is a second distance from the distal-most tip. A distal, reinforced catheter portion extends between a distal end region to a point near the side opening. A proximal, reinforced catheter portion extends a distance from a point near the side opening towards the proximal end of the catheter body. The side opening is positioned within a gap between a proximal end of the distal reinforced catheter portion and a distal end of the proximal reinforced catheter portion. A payload of a cerebral treatment device is housed within the lumen proximal to the side opening. Related devices, systems, and methods are disclosed.
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公开(公告)号：US20200016369A1
公开(公告)日：2020-01-16
申请号：US16584220
申请日：2019-09-26
发明人： Michi E. Garrison , Tony M. Chou , Scott D. Wilson
摘要： An intravascular access system for facilitation of intraluminal medical procedures within the neurovasculature through an access sheath. The system includes an aspiration or support catheter having a flexible, distal luminal portion having an inner diameter defining a lumen extending between a proximal opening at a proximal end of the luminal portion and a distal opening at a distal end of the luminal portion. The catheter has a rigid spine coupled to at least the proximal end of the luminal portion and extending proximally therefrom. The system includes a dilator having a flexible, distal dilator portion sized to be received within the lumen of the luminal portion. Associated systems, devices, and methods of use are also described.
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公开(公告)号：US20180207399A1
公开(公告)日：2018-07-26
申请号：US15875342
申请日：2018-01-19
发明人： Tony M. Chou , Scott D. Wilson , Kirsten Valley , Vera Shinsky , Philip Evard
CPC分类号： A61M25/0021 , A61B17/1204 , A61B17/12109 , A61B17/12136 , A61F2/95 , A61F2/966 , A61F2002/068 , A61F2002/9528 , A61M25/005 , A61M25/0052 , A61M25/007 , A61M25/0097 , A61M25/01 , A61M25/0108 , A61M25/09 , A61M2025/0042 , A61M2025/0059 , A61M2025/0183 , A61M2025/0681 , A61M2205/0222 , A61M2205/0238 , A61M2205/586 , A61M2210/0693 , A61M2210/12
摘要： A rapid exchange microcatheter for accessing the intracranial neurovasculature. A side opening through the sidewall is located a first distance proximal to the distal-most tip. A proximal opening located proximal to the side opening is a second distance from the distal-most tip. A distal, reinforced catheter portion extends between a distal end region to a point near the side opening. A proximal, reinforced catheter portion extends a distance from a point near the side opening towards the proximal end of the catheter body. The side opening is positioned within a gap between a proximal end of the distal reinforced catheter portion and a distal end of the proximal reinforced catheter portion. A payload of a cerebral treatment device is housed within the lumen proximal to the side opening. Related devices, systems, and methods are disclosed.
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公开(公告)号：US20230122587A1
公开(公告)日：2023-04-20
申请号：US18067666
申请日：2022-12-16
发明人： Tony M. Chou , Scott D. Wilson
摘要： Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 cm.
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