公开(公告)号：US20240225829A1

公开(公告)日：2024-07-11

申请号：US18613636

申请日：2024-03-22

Applicant: EDWARDS LIFESCIENCES CORPORATION

Inventor： Duy Nguyen ,  Kim D. Nguyen ,  Thanh V. Nguyen

IPC: A61F2/24 ,  A61B90/00

CPC classification number: A61F2/2427 ,  A61F2/2418 ,  A61F2/2433 ,  A61F2/2436 ,  A61B90/39 ,  Y10T156/1026

Abstract: Embodiments 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 embodiments 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 embodiments can include a sheath with inner and outer layers, where a folded portion of the inner layer extends through a slit in the outer layer and a portion of the outer layer overlaps the folded portion of the inner layer. Some embodiments include an elastic outer cover positioned outside the outer layer. Embodiments of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel, thus offering advantages over prior art introducer sheaths.

公开(公告)号：US20240099838A1

公开(公告)日：2024-03-28

申请号：US18535242

申请日：2023-12-11

Applicant: EDWARDS LIFESCIENCES CORPORATION

Inventor： Asher L. Metchik ,  Thanh V. Nguyen ,  Raz Biran ,  Arvin T. Chang ,  Tarannum Ishaq Gutierrez ,  Jeff Lindstrom

IPC: A61F2/24

CPC classification number: A61F2/2433 ,  A61F2/0095

Abstract: A method for retrieving a previously inserted prosthetic valve is disclosed. In one example, a loader assembly is inserted through a hub of a delivery sheath device. The delivery sheath device includes an expandable sheath that extends into a blood vessel of a patient. The loader assembly is advanced in a distal direction until a distal section of the loader assembly extends into the expandable sheath which is attached to a distal end of the hub. The distal section has a larger inner diameter than a middle tube section of the loader assembly. A delivery catheter is retracted to move a prosthetic valve attached thereto in a proximal direction until the prosthetic valve is received within the distal section. The loader assembly and the delivery catheter are removed from a proximal end of the hub while the prosthetic valve is retained within the distal section.

公开(公告)号：US11045317B2

公开(公告)日：2021-06-29

申请号：US17077673

申请日：2020-10-22

Applicant: Edwards Lifesciences Corporation

Inventor： Duy Nguyen ,  Kim D. Nguyen ,  Thanh V. Nguyen

IPC: A61F2/24 ,  A61B90/00

Abstract: Embodiments 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 embodiments 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 embodiments can include a sheath with an intermediate layer including an expandable mesh tube, an outer polymeric layer extending over at least a portion of the intermediate layer, and an inner polymeric layer extending within the intermediate layer. The intermediate layer and the inner polymeric layer are configured to establish an enlarged lumen to allow passage of the prosthetic heart valve.

公开(公告)号：US11033387B2

公开(公告)日：2021-06-15

申请号：US16378307

申请日：2019-04-08

Applicant: Edwards Lifesciences Corporation

Inventor： John J. Desrosiers ,  Amanda Kristine Anderson White ,  Michael R. Bialas ,  Gilbert Madrid ,  Michael J. Popp ,  Thanh V. Nguyen ,  Jun Liu ,  Asher L. Metchik ,  Darshin S. Patel

IPC: A61F2/24

Abstract: One method of implanting a prosthetic valve includes advancing the valve into a patient with a delivery apparatus. The valve includes apices circumferentially-spaced apart relative to each other. At least some of the apices include first apertures. The delivery apparatus includes release arms and a sheath. The release arms include second apertures for receiving the apices. At least one of the second apertures of the release arms has a different length than another one of the second apertures. The method also includes positioning the valve at a location, retracting a sheath of the delivery apparatus relative to the valve, allowing the valve to self-expand from a radially compressed state to a radially expanded state, and while the valve is coupled to the delivery apparatus, pivoting the valve relative about the release arms such that an axis of the valve is tilted relative to an axis of the delivery apparatus.

公开(公告)号：US11026788B2

公开(公告)日：2021-06-08

申请号：US15238605

申请日：2016-08-16

Applicant: Edwards Lifesciences Corporation

Inventor： Asher L. Metchik ,  Thanh V. Nguyen ,  Raz Biran ,  Arvin T. Chang ,  Tarannum Nagpurwala ,  Jeff Lindstrom

IPC: A61F2/24 ,  A61F2/00 ,  A61F2/95

Abstract: A loader and method for loading a transcatheter heart valve into a delivery sheath or catheter is described that is also configured to facilitate retrieval of the heart valve back through the delivery sheath while protecting the delivery sheath from damage. Another loader provides for easier crimping and loading of a THV into a delivery sheath or catheter from a storage jar or container. A method for crimping a THV facilitates easier end user preparation of the valve for implantation and reduces the likelihood of tissue deformation in the valve during storage. These devices and methods for deploying THVs simplify the valve replacement procedure.

公开(公告)号：US10792150B2

公开(公告)日：2020-10-06

申请号：US15997587

申请日：2018-06-04

Applicant: Edwards Lifesciences Corporation

Inventor： Duy Nguyen ,  Kim D. Nguyen ,  Thanh V. Nguyen

IPC: A61F2/24 ,  A61B90/00

Abstract: Embodiments 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 embodiments 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 embodiments can include a sheath with inner and outer layers, where a folded portion of the inner layer extends through a slit in the outer layer and a portion of the outer layer overlaps the folded portion of the inner layer. Some embodiments include an elastic outer cover positioned outside the outer layer. Embodiments of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel, thus offering advantages over prior art introducer sheaths.

公开(公告)号：US10524907B2

公开(公告)日：2020-01-07

申请号：US16149969

申请日：2018-10-02

Applicant: EDWARDS LIFESCIENCES CORPORATION

Inventor： Duy Nguyen ,  Kim D. Nguyen ,  Thanh V. Nguyen

IPC: A61F2/24 ,  A61B90/00

Abstract: Embodiments 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 embodiments 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 embodiments can include a sheath with inner and outer layers, where a folded portion of the inner layer extends through a slit in the outer layer and a portion of the outer layer overlaps the folded portion of the inner layer. Some embodiments include an elastic outer cover positioned outside the outer layer. Embodiments of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel, thus offering advantages over prior art introducer sheaths.

公开(公告)号：US10524906B2

公开(公告)日：2020-01-07

申请号：US16149960

申请日：2018-10-02

Applicant: EDWARDS LIFESCIENCES CORPORATION

Inventor： Duy Nguyen ,  Kim D. Nguyen ,  Thanh V. Nguyen

IPC: A61F2/24 ,  A61B90/00

Abstract: Embodiments 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 embodiments 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 embodiments can include a sheath with inner and outer layers, where a folded portion of the inner layer extends through a slit in the outer layer and a portion of the outer layer overlaps the folded portion of the inner layer. Some embodiments include an elastic outer cover positioned outside the outer layer. Embodiments of the present expandable sheath can avoid the need for multiple insertions for the dilation of the vessel, thus offering advantages over prior art introducer sheaths.