Delivery system and tether assembly for a prosthetic valve

The delivery system with an elongate shaft and tether assembly addresses the challenges of miniaturized prosthetic valve deployment by enabling controlled expansion and secure attachment, improving the efficiency and safety of heart valve replacement procedures.

JP2026502970APending Publication Date: 2026-01-27EDWARDS LIFESCIENCES CORP
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Patent Information

Application Number
JP2025538728
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-08-18
Filing Date
2023-12-21
Publication Date
2026-01-27

AI Technical Summary

Technical Problem

The development of prosthetic valves, particularly tissue-based replacement heart valves, is challenging due to their miniaturization for delivery and controlled expansion, as well as securing them to endoluminal tissue in an atraumatic manner, with difficulties in delivering and deploying them to desired locations within the body, especially through tortuous vascular systems.

Method used

A delivery system with an elongate shaft and tether assembly, including coupling and flexible retention tethers, allows for controlled deployment and secure attachment of prosthetic valves to native heart valves, utilizing mechanisms like release assemblies and deflection control for precise implantation.

Benefits of technology

Enables minimally invasive delivery and controlled expansion of prosthetic valves, ensuring secure attachment and precise deployment at target sites within the body, enhancing the efficiency and safety of heart valve replacement procedures.

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Abstract

A system for replacing the function of a native atrioventricular valve includes a prosthetic heart valve and a steerable delivery catheter. A capsule or sheath is provided along a distal end portion of the delivery catheter to maintain the prosthetic heart valve in a compressed state during advancement through the vascular system. A tether assembly includes an attachment tether adapted to extend through the delivery catheter and pass through an opening in the prosthetic heart valve. A release assembly includes a release tether for securing the attachment tether to the prosthetic heart valve. The release tether is retractable to detach the attachment tether from the prosthetic heart valve. The prosthetic heart valve can be released from the capsule and, while attached to the tether assembly, can expand and operate as a one-way valve. The prosthetic heart valve can then be detached from the tether assembly after confirming proper deployment.
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