Catheter with composite stiffener

US7909812B2 · kind B2 · utility

Assignee

• Target Therapeutics, Inc. · US

Inventors

• Lex P. Jansen · Pleasanton, US
• Thomas Chien · San Jose, US
• Perry Alvin Fukui · Fremont, US
• Jeffrey A. Sarge · Fremont, US
• Lawrence Charles Alpert · Fremont, US

Key dates

• Filing date: Sep 6, 2006
• Grant date: Mar 22, 2011
• Expiry date: Jan 4, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M25/0054
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.