Catheter assembly and method for treating bifurcations

US7959667B2 · kind B2 · utility

Assignee

• Abbott Cardiovascular Systems, Inc. · US

Inventors

• Diem Uyen Ta · San Jose, US
• Caroline Wu · San Jose, US
• Brenna K. Hearn · San Francisco, US
• Daniel L. Cox · Palo Alto, US
• Leonard D. Barbod · San Diego, US
• Jessie Delgado · Durham, US
• Stephen D. Pacetti · San Jose, US
• Thomas Ray Hatten · Los Altos, US
• David K. Wrolstad · Yucaipa, US
• Kenneth Kay Armstrong · Riverside, US
• Darrin James Kent · Murrieta, US

Key dates

• Filing date: Dec 21, 2006
• Grant date: Jun 14, 2011
• Expiry date: Apr 28, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/006
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An improved stent design and stent delivery catheter assembly for repairing a main vessel and a side branch vessel forming a bifurcation. The stent includes rings aligned along a common longitudinal axis and connected by links, where the stent has one or more portals for aligning with and partially expanding into the opening to the side branch vessel. The stent is implanted at a bifurcation so that the main stent section is in the main vessel, and the portal section covers at least a portion of the opening to the side branch vessel. A second stent can be implanted in the side branch vessel and abut the expanded central section to provide full coverage of the bifurcated area in the main vessel and the side branch vessel. Radiopaque markers on the stent and on the tip of the delivery catheter assist in aligning the portal section with the opening to the side branch vessel.