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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：US11931259B2
公开(公告)日：2024-03-19
申请号：US16865656
申请日：2020-05-04
发明人： Thanh Huy Le , Tung T. Le , Sovanpheap Mak , Alpana Kiran Gowdar , Richard D. White , Sonny Tran
CPC分类号： A61F2/2436 , A61M25/0009 , B29C65/00 , B29D23/00 , A61F2250/0003 , A61F2250/0098 , A61M39/06 , A61M2039/0626
摘要： Disclosed herein are expandable introducer sheaths and methods of making and using the same. The sheaths minimize trauma to a patient's vasculature by allowing for temporary expansion of a portion of the sheath to accommodate passage of a delivery system for an implant, then return to a non-expanded state after the passage of the device. The sheath includes a foldable inner member having a detached flap structure at its distal tip that facilitates expansion of the sheath lumen to increased diameters, and an elastomeric distal end that reduces push and retrieval forces therethrough. The sheath can include a hemostasis seal on its proximal end to prevent the leakage of blood out of the sheath and prevent ballooning of outer layer of the sheath.
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公开(公告)号：US20200261227A1
公开(公告)日：2020-08-20
申请号：US16865656
申请日：2020-05-04
发明人： Thanh Huy Le , Tung T. Le , Sovanpheap Mak , Alpana Kiran Gowdar , Richard D. White , Sonny Tran
IPC分类号： A61F2/24
摘要： Disclosed herein are expandable introducer sheaths and methods of making and using the same. The sheaths minimize trauma to a patient's vasculature by allowing for temporary expansion of a portion of the sheath to accommodate passage of a delivery system for an implant, then return to a non-expanded state after the passage of the device. The sheath includes a foldable inner member having a detached flap structure at its distal tip that facilitates expansion of the sheath lumen to increased diameters, and an elastomeric distal end that reduces push and retrieval forces therethrough. The sheath can include a hemostasis seal on its proximal end to prevent the leakage of blood out of the sheath and prevent ballooning of outer layer of the sheath.
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公开(公告)号：US20240180700A1
公开(公告)日：2024-06-06
申请号：US18437821
申请日：2024-02-09
发明人： Thanh Huy Le , Tung T. Le , Sovanpheap Mak , Alpana Kiran Gowdar , Richard D. White , Sonny Tran
CPC分类号： A61F2/2436 , A61M25/0009 , B29C65/00 , B29D23/00 , A61F2250/0003 , A61F2250/0098 , A61M39/06 , A61M2039/0626
摘要： Disclosed herein are expandable introducer sheaths and methods of making and using the same. The sheaths minimize trauma to a patient's vasculature by allowing for temporary expansion of a portion of the sheath to accommodate passage of a delivery system for an implant, then return to a non-expanded state after the passage of the device. The sheath includes a foldable inner member having a detached flap structure at its distal tip that facilitates expansion of the sheath lumen to increased diameters, and an elastomeric distal end that reduces push and retrieval forces therethrough. The sheath can include a hemostasis seal on its proximal end to prevent the leakage of blood out of the sheath and prevent ballooning of outer layer of the sheath.
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公开(公告)号：US20190381284A1
公开(公告)日：2019-12-19
申请号：US16550060
申请日：2019-08-23
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：US20180368979A1
公开(公告)日：2018-12-27
申请号：US16010744
申请日：2018-06-18
发明人： Thanh Huy Le , Tung T. Le , Sovanpheap Mak , Alpana Kiran Gowdar , Richard D. White , Sonny Tran
IPC分类号： A61F2/24
摘要： Disclosed herein are expandable introducer sheaths and methods of making and using the same. The sheaths minimize trauma to a patient's vasculature by allowing for temporary expansion of a portion of the sheath to accommodate passage of a delivery system for an implant, then return to a non-expanded state after the passage of the device. The sheath includes a foldable inner member having a detached flap structure at its distal tip that facilitates expansion of the sheath lumen to increased diameters, and an elastomeric distal end that reduces push and retrieval forces therethrough. The sheath can include a hemostasis seal on its proximal end to prevent the leakage of blood out of the sheath and prevent ballooning of outer layer of the sheath.
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公开(公告)号：US20230069245A1
公开(公告)日：2023-03-02
申请号：US17822689
申请日：2022-08-26
发明人： Sonny Tran , Jeong Soo Lee , Nasser William Saleh , Ilan Tamir , Daniel J. Scherb , Maxwell Harrison Fine , Alpana Kiran Gowdar , Tri D. Tran , Neal H. Avery , Sarah Ghanbari , Uy D. Trinh , Sovanpheap Mak , Erik Bulman , Raymond Mercado
摘要： Aspects of an expandable sheath can be used in conjunction with a catheter assembly to introduce a prosthetic device, such as a heart valve, into a patient. Such aspects can minimize trauma to the vessel by allowing for temporary expansion of a portion of the introducer sheath to accommodate the delivery apparatus, followed by a return to the original diameter once the prosthetic device passes through. Some aspects can include a sheath with a variable diameter inner liner wound in a spiral slidable configuration and an outer layer. The disclosed sheath is configured to expand from a predetermined rest diameter dr to an expanded diameter de during application of a radial outward force by passage of a medical device through the sheath.
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公开(公告)号：US20220379094A1
公开(公告)日：2022-12-01
申请号：US17883469
申请日：2022-08-08
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：US11406796B2
公开(公告)日：2022-08-09
申请号：US16550060
申请日：2019-08-23
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：US10792471B2
公开(公告)日：2020-10-06
申请号：US14880109
申请日：2015-10-09
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
摘要： A delivery sheath includes an elastic outer tubular layer and an inner tubular layer having a thick wall portion integrally connected to a thin wall portion. The inner tubular layer can have a compressed or folded condition wherein the thin wall portion folds onto an outer surface of the thick wall portion under urging of the elastic outer tubular layer. When an implant passes therethrough, the outer tubular layer stretches and the inner tubular layer unfolds into an expanded lumen diameter. Once the implant passes, the outer tubular layer again urges the inner tubular layer into the compressed condition with the sheath reassuming its smaller profile. The sheath may also include selectively placed longitudinal rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion and collapse, thereby reducing the push force needed to advance the implant through the sheath's lumen.
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