Stent graft delivery system

US8926682B2 · kind B2 · utility

Assignee

• Nellix, Inc. · US

Inventors

• Steven L. Herbowy · Palo Alto, US
• Michael A. Evans · Palo Alto, US
• Anant Kumar · Santa Clara, US
• K. T. Venkateswara Rao · San Jose, US
• Matthew R. Hellewell · Menlo Park, US
• Gil Laroya · Santa Clara, US

Key dates

• Filing date: Sep 23, 2011
• Grant date: Jan 6, 2015
• Expiry date: Sep 23, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M25/10188
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A system for treating an aneurysm comprises an elongate flexible shaft and an expandable member. An expandable scaffold is disposed over the expandable member and may be expanded from a collapsed configuration to an expanded configuration. A double-walled filling structure is disposed over the scaffold and has an outer wall and an inner wall. The filling structure is adapted to be filled with a hardenable fluid filing medium so that the outer wall conforms to an inside surface of the aneurysm and the inner wall forms a substantially tubular lumen to provide a path for blood flow. In the expanded configuration the scaffold engages the inner wall of the filling structure. A tether is releasably coupled with the filling structure and the flexible shaft thereby constraining axial movement of the structures relative to each other.