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Biomedical Polymers and Compounds™

Radiopaque Compounds for Minimally Invasive Medical Devices

Definition: Polymers are inherently transparent to x-ray.  Minimally invasive medical devices that require intra-operative visibility frequently use radiopaque polymer compounds.  These are blends of polymers and radiopaque additives, such as barium, bismuth and tungsten.  Applications for these blends include cardiovascular catheters, central venous catheters, neurovascular catheters, feeding tubes and more.


Purpose: Provide an understanding of the primary radiopaque fillers used in in medical polymers, including recommended filler loadings for specific polymers.

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