MaRVis has developed the world´s first comprehensive portfolio of MR safe and visible guidewires with mechanical properties comparable to conventional metal-based guidewires, and with excellent visibility in MRI.

For the first time the necessary combination of high axial stiffness, torsion capability, general stability, flexibility and tear-resistance as essential material properties on the one hand, and patient safety features, controlled artifact (image) generation for directed visualization, and no electric conductivity or heating in MRI on the other hand, has been achieved.

The MaRVis MR Guidewires are based on elongated glass and aramid fiber/epoxy compound materials. The distal end of the guidewire is provided as a flexible, manually shapeable tip including an X-ray marker. MR visibility is achieved by a continuous doping of the guidewire with iron microparticles. A distinct, ball-shaped tip marker artifact is generated by a locally increased iron microparticle concentration at the very distal end of the flexible tip.

The aramid fibers and the PTFE shrink tube (which also creates a slippery surface) over the entire length of the guidewire in a monobloc design are patient safety features. A maximal bending radius has been defined for each guidewire type which is indicated on the label.