Biotronik Ag

Biotronik Vi Patent Ag

Biotronik Se Co. Kg

Biotronik Gmbh & Co. Kg

Frank Bakczewitz

Steffen Mews

Daniel Lootz

Karsten Koop

Martin Kiekbusch

Baerbel Becher

Alexandre Amido

Stefanie PÖHLMANN

Bärbel Becher

A medical implant (), in particular a stent (), for implantation in an animal body and/or human body (), comprising a base body () which includes at least two segments (') having at least two deflection points () that are diametrically opposed in the axial direction (), and at least one adjusting means () that acts on the deflection points () to adjust an extension () of the base body () in the circumferential direction ().

Medical implant, in particular a stent, for implantation in an animal body and/or human body

A stent is provided having a base body circumscribing a cylindrical shape and radially expandable from a contracted starting position into a dilated support position, including a plurality of meander-shaped struts disposed in the circumferential direction and arrayed on one another in the axial direction, each strut being meander-shaped in its coarse structure and made of a flexible material, and at least one axial connector in the axial direction, connecting the meander-shaped struts of two axially adjacent meandering curves, wherein the at least one axial connector connects the inside radius of a zenith point of a first meandering curve with a second meandering curve, characterized in that the at least one axial connector at the inside radius of the zenith point of the first meandering curve has an at least double-arm structure.

Stent having improved stent design

A medical supporting implant, in particular a stent, comprises a tubular base body which is made up of bendable struts (), such that at node points () of at least two struts (), the bendable struts () form an acute angle (W) to one another which angle becomes larger on dilatation of the implant with plastic deformation of the struts () at the node point (). At least a portion of the struts () between the plastic deformation areas () is provided with a telescoping ratchet mechanism (R) for irreversible lengthening of the respective struts () on dilatation.

Medical supporting implant, in particular stent

The invention relates to stents made of a material with an elongation at rupture of 30% or less and with a tubular base body which entirely or in parts comprises structural segments which are interconnected in longitudinal direction of the stents by means of transverse connectors and in which the structural segments comprise a zigzagging or undulating structure of a brace which is wrapped around the longitudinal axis of the stent. Due to the mechanical properties of the materials used, adaptation of the stent design is required. This is achieved in that in a turning region of the zigzagging or undulating structure the brace comprises a straight bending section aligned in circumferential direction.

Stents made of a material with short elongation at rupture

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

Growing community of inventors

Rostock, Germany

Frank Bakczewitz