CPC A61L 31/128 (2013.01) [A61B 10/0233 (2013.01); A61L 29/02 (2013.01); A61L 29/049 (2013.01); A61L 29/126 (2013.01); A61L 29/14 (2013.01); A61L 29/18 (2013.01); A61L 31/022 (2013.01); A61L 31/041 (2013.01); A61L 31/125 (2013.01); A61L 31/14 (2013.01); A61L 31/18 (2013.01); A61M 5/32 (2013.01); A61M 25/09 (2013.01); A61M 2025/09166 (2013.01); A61M 2025/09191 (2013.01); Y10T 428/2933 (2015.01); Y10T 428/2964 (2015.01); Y10T 428/2969 (2015.01)] | 14 Claims |
1. A medical device comprising:
an elongate polymer body;
rod-shaped bodies embedded in the elongate polymer body, wherein at least one of the rod-shaped bodies comprises:
one or more non-metallic filaments; and
a non-ferromagnetic matrix material enclosing and/or agglutinating the one or more filaments,
wherein the rod-shaped bodies are arranged in different positions with respect to the central longitudinal axis of the medical device, wherein rod-shaped bodies positioned near the central axis of the medical device contain marker particles in a matrix material thereof to form a passive- negative magnetic resonance imaging (MRI) marker for generating an artifact in a magnetic resonance imaging process and all rod-shaped bodies positioned more distant to the central longitudinal axis of the medical device contain no marker particles; and
wherein the medical device is a guidewire, mandrel, or stylet, wherein the medical device generates a sufficiently strong and sharp image, by influencing only a comparably small layer of surrounding molecules by the MRI marker particles in magnetic resonance imaging.
|