NanoMed EX is a thermoplastic elastomer (TPE) by Putnam, CT-based Foster Corp, a PolyMedex Discovery Group company, is made of flexible polyether and rigid polyamide compounds. The material is for minimally invasive devices and is said to have greater stiffness that other TPEs, giving the material improved pushability and torque for cardiovascular and neurovascular catheters.

To achieve its properties, particles with the dimensions less than a nanometer are dispersed throughout a Pebax polymer-based matrix. The result is a polymer formulation with appearance and processability similar to that of unmodified Pebax resin. Using nanoparticles with length-to-thickness ratios that provide reinforcement properties, Foster was able to engineer NanoMed EX compounds to a 45% greater flexural modulus, yet the same tensile elongation as Pebax 7233 MED. 

NanoMed EX formulations are also designed for catheter extrusion processing, where small diameters, thin walls, tight tolerances, and smooth surfaces are required.