Flexible catheter

US10525231B2 · kind B2 · utility

Assignee

• TRACTUS VASCULAR, LLC · US

Inventors

• Craig Moquin · Fanwood, US
• Andrew Filachek · Beachwood, US
• Paige Reinhardt · Windom, US
• Matthew Koehler · Toms River, US
• Darren De Medici · Middletown, US
• Janet Burpee · Fair Haven, US

Key dates

• Filing date: Dec 27, 2016
• Grant date: Jan 7, 2020
• Expiry date: Jun 11, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2316/10
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A flexible, elongated catheter tube having distal and proximal ends and a laser cut section there between. The laser cut section makes up a majority of the catheter length and is cut in a continuous helical pattern forming interlocking teeth which can be sinusoidal, triangular, square or likes shapes, preferably sinusoidal. The interior of the catheter tube has a polymeric bi-layer of a nylon or like polymer at the interface of the tube interior and a Teflon or like polymer forms the interior lumen of the catheter. The exterior of the tube has a thin polymer coating of nylon or the like. A short portion of the distal end is uncut and is followed by a narrower terminal section which can be tapered for better blockage penetration. The interlocking teeth disengage and reengage in a fish scale manner without undergoing plastic deformation and without substantial polymer separation.