Balloon catheter having a shaft with a variable stiffness inner tubular member

US9023174B2 · kind B2 · utility

Assignee

• Abbott Cardiovascular Systems, Inc. · US

Inventors

• John A. Simpson · Carlsbad, US
• Jessie Delgado · Durham, US
• Bruce M. Wilson · Temecula, US
• Lenny Barbod · San Diego, US
• Ramon Torres · Temecula, US
• Devon Brown · Temecula, US
• Quan Ritchie · Moreno Valley, US
• William S. Chin · Moreno Valley, US

Key dates

• Filing date: Sep 2, 2011
• Grant date: May 5, 2015
• Expiry date: Sep 2, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1002
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A catheter having an elongated shaft and a balloon on a distal shaft section, the elongated shaft comprising an outer tubular member, and an inner tubular member which has a bonded portion along which an outer surface of the inner tubular member is bonded to an inner surface of the outer tubular member. The inner tubular member has a proximal portion proximal to the bonded portion, and a distal portion distal to the bonded portion with higher axial compression stiffness and column strength than the proximal portion thereof. The catheter has improved trackability, axial collapse resistance, pushability, and crossability, for improved ability to position the balloon at a desired location in a patient's body lumen.