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公开(公告)号：US12076257B2
公开(公告)日：2024-09-03
申请号：US15947691
申请日：2018-04-06
申请人： ReFlow Medical, Inc.
CPC分类号： A61F2/92 , A61F2/848 , A61F2/90 , A61F2/966 , A61L31/16 , A61F2002/8483 , A61F2002/9528 , A61F2002/9534 , A61F2/958 , A61F2220/0016 , A61F2250/0067 , A61F2250/0098 , A61L2300/416
摘要： Delivery systems for expandable elements, such as stents or scaffolds having spikes, flails, or other protruding features for delivering drugs and/or penetrating target tissue within a human patient and associated methods for using such systems. The delivery systems can be configured to deliver and position expandable structures within a body lumen (e.g., vessel). In addition, these delivery systems can also be configured to deploy and expand the expandable structures in the body lumen. The delivery systems can further be configured to engage with the expanded structure and collapse the structure for removal from the body lumen. The delivery systems can be configured to deliver another expandable structure or the same expandable structure to another body lumen, or the same body lumen, in a single procedure or during a plurality of procedures.
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公开(公告)号：US11998465B2
公开(公告)日：2024-06-04
申请号：US17345959
申请日：2021-06-11
发明人： Paul Sherburne
摘要： This disclosure concerns medical devices, such as catheters and implantable devices, having radially adjustable features. More particularly, the catheters and implantable devices can radially expand and contract to perform various functions within the body. Expansion and contraction can be performed by a radially adjustable structure mounted on the medical device. For example, a medical device can include an body configured for in vivo introduction, a strip attached to the body and rolled into a ring such that layers of the strip radially overlap each other, and at least one motor actuatable by electrical energy to move the radially overlapping layers of the strip relative to one another and change a diameter of the ring and the body.
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公开(公告)号：US20230110138A1
公开(公告)日：2023-04-13
申请号：US17963560
申请日：2022-10-11
摘要： A device for radially compressing a stent may include a housing including a central opening and a first iris positioned adjacent the housing. The first iris includes a first circumferential ring and a first plurality of arms extending radially inward from the first circumferential ring to define a first central opening. The device may include a second iris axially offset from the first iris and including a second circumferential ring and a second plurality of arms extending radially inward from the second circumferential ring to define a second central opening. Rotation of the circumferential ring(s) relative to the housing changes a size of their respective central opening(s). The plurality of arms may shift between a first configuration and a second configuration via rotation of the circumferential ring(s) relative to the housing.
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公开(公告)号：US20230100280A1
公开(公告)日：2023-03-30
申请号：US18062491
申请日：2022-12-06
申请人： MicroVention, Inc.
发明人： Ponaka Pung
摘要： A stent with a common connection interface, and a method and platform used to create a stent with a common connection interface is described. A common connection interface used to connect a stent to a pusher is described.
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公开(公告)号：US11529156B2
公开(公告)日：2022-12-20
申请号：US16531920
申请日：2019-08-05
申请人： Covidien LP
发明人： Earl Howard Slee , Thomas Wilder, III , Thomas McCarthy , Mark Philip Ashby , Sanjay Shrivastava
IPC分类号： A61B17/221 , A61F2/90 , A61B17/22 , A61F2/91 , A61F2/92
摘要： Methods for restoring blood flow in occluded blood vessels using an apparatus having a self-expandable distal segment that is pre-formed to assume a superimposed structure in an unconstrained condition but can be made to take on a volume-reduced form making it possible to introduce it with a microcatheter and a push wire arranged at the proximal end, with the distal segment in its superimposed structure assuming the form of a longitudinally open tube and having a mesh structure of interconnected strings or filaments or struts. In a preferred embodiment, the distal segment has a tapering structure at its proximal end where the strings or filaments or struts converge at a connection point.
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公开(公告)号：US11413171B2
公开(公告)日：2022-08-16
申请号：US16716373
申请日：2019-12-16
发明人： Vikas Gupta
摘要： A stent comprises a first longitudinally extended cylindrical-shaped member. The first member comprises a plurality of first longitudinal struts and an array of first radial struts extending between the first longitudinal struts. The stent further comprises an overlapping region to form a dense mesh.
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公开(公告)号：US20220175518A1
公开(公告)日：2022-06-09
申请号：US17600774
申请日：2020-04-14
摘要： Systems and methods for deploying a stent within the frontal sinus. The stent includes flexible foam and film layers arranged in a stacked configuration and furled within a cartridge prior to deployment. The cartridge is removably coupled to an applicator device including an actuator. The film layer may include a polymer having a resilience sufficient to unfurl the stent and maintain patency of the frontal sinus opening. The flexible foam layer may have porosity of greater than 80%, and an active agent may be within the flexible foam layer. The flexible foam layer may be bioresorbable and the flexible film layer biocompatible and non-biodegradable. The stent may include first and second body portions with the first body portion independently unfurling from the second body portion to retain the stent within the frontal sinus. Contouring of the first and second body portions may facilitate ease with removal of the stent.
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公开(公告)号：US11166811B2
公开(公告)日：2021-11-09
申请号：US16288797
申请日：2019-02-28
申请人： James Yashu Coe
发明人： James Yashu Coe
IPC分类号： A61F2/24 , A61L27/18 , A61L27/50 , A61L31/02 , A61L17/00 , A61F2/92 , A61L27/56 , A61L27/16 , A61F2/95
摘要： A synthetic heart valve is made from a valve graft of synthetic material and more particularly expanded polytetrafluoroethylene (ePTFE). The valve graft has an upper portion defined by a first thickness and a lower portion defined by a second thickness which is greater than the first thickness. The valve graft is formed into a cylindrical sleeve having a diameter and a folded region. A flexible stent overlays the cylindrical sleeve, wherein a series of leaflets are formed in the lower portion of the sleeve, the leaflets defining a semicircular perimeter. The leaflets are sutured to the cylindrical sleeve and the cylindrical sleeve is sutured to the flexible stent, the stent having a plurality of bent cylindrical wire segments that are welded together and in which the sleeve is sutured to the wire, including the welded areas of the stent. The formed valve can be implanted using a balloon catheter.
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公开(公告)号：US11033411B2
公开(公告)日：2021-06-15
申请号：US16219266
申请日：2018-12-13
发明人： Martyn G. Folan
摘要： Example medical stents are disclosed. An example stent includes a tubular framework including an inner surface, an outer surface and a lumen extending therethrough. Additionally, the stent includes a tissue ingrowth scaffold extending along a portion of the outer surface of the tubular framework, wherein the tissue ingrowth scaffold is spaced radially away from the outer surface of the tubular framework to define an expansion cavity therebetween and wherein the tissue ingrowth scaffold permits tissue ingrowth along a portion thereof. Further, the stent includes an expandable member positioned within at least a portion of the expansion cavity.
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公开(公告)号：US20210161689A1
公开(公告)日：2021-06-03
申请号：US17170299
申请日：2021-02-08
发明人： Melissa CLINGER , Peter FORSYTHE
摘要： Stents generally can include multiple longitudinal elements each extending over a majority of the length of the stent and each having alternating flexible and rigid segments. The stents can include nodes positioned between the flexible and rigid segments on the longitudinal elements and interconnecting members extending circumferentially to connect adjacent longitudinal elements at the nodes. The longitudinal elements can have a wave pattern and the interconnecting members can have a branch structure connecting peaks from one longitudinal element to troughs of an adjacent longitudinal element. The resulting stent structure can have lateral and longitudinal flexibility needed to navigate and conform to intracranial arteries with the benefits of recapturability and structural integrity of a closed cell design.
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