US 11,752,240 B2
Rod shaped body and medical device
Klaus Düring, Frechen (DE); and Joachim Georg Pfeffer, Aachen (DE)
Assigned to MARVIS INTERVENTIONAL GMBH, Frechen (DE)
Filed by MARVIS INTERVENTIONAL GMBH, Frechen (DE)
Filed on May 3, 2017, as Appl. No. 15/586,155.
Application 15/586,155 is a continuation of application No. 13/880,032, granted, now 9,656,004, previously published as PCT/EP2011/005230, filed on Oct. 18, 2011.
Claims priority of application No. 10187863 (EP), filed on Oct. 18, 2010.
Prior Publication US 2017/0232158 A1, Aug. 17, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. A61L 31/12 (2006.01); A61M 25/09 (2006.01); A61L 29/12 (2006.01); A61L 29/18 (2006.01); A61L 31/18 (2006.01); A61B 10/02 (2006.01); A61L 29/02 (2006.01); A61L 29/04 (2006.01); A61L 29/14 (2006.01); A61L 31/02 (2006.01); A61L 31/04 (2006.01); A61L 31/14 (2006.01); A61M 5/32 (2006.01)
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
OG exemplary drawing
 
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.