公开(公告)号：US11420026B2

公开(公告)日：2022-08-23

申请号：US16550922

申请日：2019-08-26

Applicant: Edwards Lifesciences Corporation

Inventor： 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

IPC: A61M25/06 ,  A61F2/24 ,  A61F2/958 ,  A61M25/00 ,  A61F2/01

Abstract: 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.

公开(公告)号：US20190321175A1

公开(公告)日：2019-10-24

申请号：US16407057

申请日：2019-05-08

Applicant: Edwards Lifesciences Corporation

Inventor： Pu Zhou ,  Yong Gao ,  Erik Bulman ,  Baigui Bian ,  Yidong M. Zhu ,  David Delon Williams

IPC: A61F2/24 ,  A61M25/00 ,  A61M25/01 ,  A61M25/06

Abstract: 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.

公开(公告)号：US12194256B2

公开(公告)日：2025-01-14

申请号：US17883469

申请日：2022-08-08

Applicant: Edwards Lifesciences Corporation

Inventor： 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

IPC: A61M25/06 ,  A61F2/24 ,  A61F2/958 ,  A61F2/01 ,  A61M25/00

Abstract: 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.

公开(公告)号：US20190381284A1

公开(公告)日：2019-12-19

申请号：US16550060

申请日：2019-08-23

Applicant: Edwards Lifesciences Corporation

Inventor： 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

IPC: A61M25/06 ,  A61F2/958 ,  A61F2/24

Abstract: 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.

公开(公告)号：US20240424264A1

公开(公告)日：2024-12-26

申请号：US18830202

申请日：2024-09-10

Applicant: EDWARDS LIFESCIENCES CORPORATION

Inventor： 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

IPC: A61M25/06 ,  A61F2/01 ,  A61F2/24 ,  A61F2/958 ,  A61M25/00

Abstract: 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.

公开(公告)号：US20220379094A1

公开(公告)日：2022-12-01

申请号：US17883469

申请日：2022-08-08

Applicant: Edwards Lifesciences Corporation

Inventor： 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

IPC: A61M25/06 ,  A61F2/24 ,  A61F2/958

Abstract: 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.

公开(公告)号：US11406796B2

公开(公告)日：2022-08-09

申请号：US16550060

申请日：2019-08-23

Applicant: Edwards Lifesciences Corporation

Inventor： 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

IPC: A61M25/06 ,  A61F2/958 ,  A61F2/24 ,  A61M25/00 ,  A61F2/01

Abstract: 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.