公开(公告)号：US20230346580A1

公开(公告)日：2023-11-02

申请号：US18220730

申请日：2023-07-11

Applicant: EDWARDS LIFESCIENCES CORPORATION

Inventor： Maxwell Harrison Fine

IPC: A61F2/962

CPC classification number: A61F2/962

Abstract: Disclosed herein are introducer systems including dilators, sheaths, methods, and tools for making dilators and sheaths. The introducer systems disclosed herein include features to assist in expansion of a sheath, particularly at proximal or distal regions of the sheath. Methods of making the dilators and sheaths include steps to allow or cause expansion of certain regions of the sheath during fabrication, and/or steps to allow or cause expansion of certain regions of the sheath during delivery of a medical device.

公开(公告)号：US20230069245A1

公开(公告)日：2023-03-02

申请号：US17822689

申请日：2022-08-26

Applicant: Edwards Lifesciences Corporation

Inventor： 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

IPC: A61F2/24 ,  A61M25/00

Abstract: 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.