Expandable implant and implant system

US11771435B2 · kind B2 · utility

Assignees

• Lawrence Livermore National Security, LLC · US
• THE TEXAS A&M UNIVERSITY SYSTEM · US

Inventors

• Thomas S. Wilson · San Leandro, US
• Ward Small, IV · Livermore, US
• William J. Benett · Livermore, US
• Jason M. Ortega · Pacifica, US
• Duncan J. Maitland · College Station, US
• Jonathan Hartman · Sacramento, US

Key dates

• Filing date: Jan 22, 2021
• Grant date: Oct 3, 2023
• Expiry date: Dec 17, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2025/0042
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An embodiment of the invention includes an expandable implant to endovascularly embolize an anatomical void or malformation, such as an aneurysm. An embodiment is comprised of a chain or linked sequence of expandable polymer foam elements. Another embodiment includes an elongated length of expandable polymer foam coupled to a backbone. Another embodiment includes a system for endovascular delivery of an expandable implant (e.g., shape memory polymer) to embolize an aneurysm. The system may include a microcatheter, a lumen-reducing collar coupled to the distal tip of the microcatheter, a flexible pushing element detachably coupled to an expandable implant, and a flexible tubular sheath inside of which the compressed implant and pushing element are pre-loaded. Other embodiments are described herein.