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公开(公告)号：US10537431B2
公开(公告)日：2020-01-21
申请号：US16149947
申请日：2018-10-02
发明人： Pu Zhou , Yong Gao , Erik Bulman , Baigui Bian , Yidong M. Zhu , David D. Williams , Timothy A. Geiser , Michael G. Valdez , Sonny Tran , Richard D. White , Thanh Huy Le , Tung T. Le , Alpana K. Gowdar
摘要： An expandable introducer sheath for passage of implant delivery catheters, such as catheters for delivery of prosthetic heart valves. The expandable sheath balances the amounts, shapes and positions of various stiff and elastic structures in the sheath to selectively program the expandability and buckling stiffness of the sheath. The expandable sheath can include, for example, an expandable tubular layer that includes alternating stiff and elastic wall portions of a single radial thickness. The combination of stiff and elastic wall portions allow for torque and push strength to advance the expandable sheath while at the same time accommodating temporary expansion. The expandable sheath can also be reinforced with a tubular layer of braided fibers or a stent structure for additional strength. Other embodiments include selective use of slots or gaps at the distal end of a stiff wall portion to enhance expandability and distribute strain.
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公开(公告)号：US20190321175A1
公开(公告)日：2019-10-24
申请号：US16407057
申请日：2019-05-08
发明人： Pu Zhou , Yong Gao , Erik Bulman , Baigui Bian , Yidong M. Zhu , David Delon Williams
摘要： An expandable introducer sheath for passage of implant delivery catheters, such as catheters for delivery of prosthetic heart valves. The expandable sheath balances the amounts, shapes and positions of various stiff and elastic structures in the sheath to selectively program the expandability and buckling stiffness of the sheath. The expandable sheath can include, for example, an expandable tubular layer that includes alternating stiff and elastic wall portions of a single radial thickness. The combination of stiff and elastic wall portions allow for torque and push strength to advance the expandable sheath while at the same time accommodating temporary expansion. The expandable sheath can also be reinforced with a tubular layer of braided fibers or a stent structure for additional strength. Other embodiments include selective use of slots or gaps at the distal end of a stiff wall portion to enhance expandability and distribute strain.
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公开(公告)号：US20190030299A1
公开(公告)日：2019-01-31
申请号：US16149697
申请日：2018-10-02
发明人： Pu Zhou , Erik Bulman , Timothy A. Geiser , Michael G. Valdez , Yidong M. Zhu , Baigui Bian , Sonny Tran , Richard D. White , Thanh Huy Le , Tung T. Le , Alpana K. Gowdar , Yong Gao , David D. Williams
摘要： A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
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公开(公告)号：US20190030296A1
公开(公告)日：2019-01-31
申请号：US16149650
申请日：2018-10-02
发明人： Pu Zhou , Erik Bulman , Timothy A. Geiser , Michael G. Valdez , Yidong M. Zhu , Baigui Bian , Sonny Tran , Richard D. White , Thanh Huy Le , Tung T. Le , Alpana K. Gowdar , Yong Gao , David D. Williams
CPC分类号： A61M25/0662 , A61F2/2433 , A61F2/958 , A61F2002/011 , A61M25/0023 , A61M2025/0024
摘要： A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
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公开(公告)号：US12023241B2
公开(公告)日：2024-07-02
申请号：US17396589
申请日：2021-08-06
发明人： Yong Gao , Pu Zhou , Tianwen Zhao , Jeffrey Wu
CPC分类号： A61F2/2418 , A61F2/2433 , A61F2220/0075 , A61F2230/0006 , A61F2230/0008 , A61F2230/0015 , A61F2230/0019 , A61F2230/0034 , A61F2230/0054 , A61F2230/0091
摘要： An implantable prosthetic valve assembly, according to one embodiment, comprises a frame assembly including a plurality of struts and a prosthetic valve secured inside the frame assembly by sutures. At least one of the plurality of spaced struts contains at least one hole that passes from one side of the at least one strut to another side of the at least one strut and a recess disposed around the hole.
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公开(公告)号：US20210361424A1
公开(公告)日：2021-11-25
申请号：US17396589
申请日：2021-08-06
发明人： Yong Gao , Pu Zhou , Tianwen Zhao , Jeffrey Wu
IPC分类号： A61F2/24
摘要： An implantable prosthetic valve assembly, according to one embodiment, comprises a frame assembly including a plurality of struts and a prosthetic valve secured inside the frame assembly by sutures. At least one of the plurality of spaced struts contains at least one hole that passes from one side of the at least one strut to another side of the at least one strut and a recess disposed around the hole.
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公开(公告)号：US10391281B2
公开(公告)日：2019-08-27
申请号：US16149671
申请日：2018-10-02
发明人： Pu Zhou , Erik Bulman , Timothy A. Geiser , Michael G. Valdez , Yidong M. Zhu , Baigui Bian , Sonny Tran , Richard D. White , Thanh Huy Le , Tung T. Le , Alpana K. Gowdar , Yong Gao , David D. Williams
摘要： A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
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公开(公告)号：US10391280B2
公开(公告)日：2019-08-27
申请号：US16149650
申请日：2018-10-02
发明人： Pu Zhou , Erik Bulman , Timothy A. Geiser , Michael G. Valdez , Yidong M. Zhu , Baigui Bian , Sonny Tran , Richard D. White , Thanh Huy Le , Tung T. Le , Alpana K. Gowdar , Yong Gao , David D. Williams
摘要： A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
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公开(公告)号：US11420026B2
公开(公告)日：2022-08-23
申请号：US16550922
申请日：2019-08-26
发明人： Pu Zhou , Erik Bulman , Timothy A. Geiser , Michael G. Valdez , Yidong M. Zhu , Baigui Bian , Sonny Tran , Richard D. White , Thanh Huy Le , Tung T. Le , Alpana Kiran Gowdar , Yong Gao , David Delon Williams
摘要： A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
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公开(公告)号：US10391279B2
公开(公告)日：2019-08-27
申请号：US16149636
申请日：2018-10-02
发明人： Pu Zhou , Erik Bulman , Timothy A. Geiser , Michael G. Valdez , Yidong M. Zhu , Baigui Bian , Sonny Tran , Richard D. White , Thanh Huy Le , Tung T. Le , Alpana K. Gowdar , Yong Gao , David D. Williams
摘要： A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
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