Stent

US7004968B2 · kind B2 · utility

Assignee

• Biotronik GmbH & Co. KG · DE

Inventors

• Daniel Lootz · Rostock, DE
• Karsten Koop · Rostock, DE
• Frank Bakczewitz · Rostock, DE
• Martin Kiekbusch · Stralsund, DE

Key dates

• Filing date: Dec 17, 2003
• Grant date: Feb 28, 2006
• Expiry date: Dec 29, 2023

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/0039
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention concerns a stent comprising a longitudinal axis (12) and a peripheral wall (14) which is formed at least over a part of the length of the stent (10) by a lattice-like carrier structure (24) which is open at two ends. The carrier structure includes at least one bar (16) extending helically around the longitudinal axis in such a way as to provide a helical primary shape (26) for the peripherally extending bar with more than one helical turn. Besides the helical primary shape (26) the bar has a zigzag-like or meander-shaped secondary shape (30) with reversal points and associated reversal portions (32), between which extend bar portions (34) of the peripherally extending bar with an extension component in the longitudinal direction of the stent. The carrier structure further includes connecting bars (40) which respectively bridge over a helical turn of the helical primary structure and which at their two longitudinal ends attach to the bar portions (34) of the helical primary shape between two respective adjacent reversal points.