By Michael Lauzon, Plastics News
Putnam, Connecticut -- Foster Corp. has developed two polymer lineups that are better suited to medical catheters than conventional polymers.
New ProPell thermoplastic polyurethane (TPU) and ProPell polyether block amide (PEBA) show improved processing and have less tackiness and friction while maintaining other physical properties of the unmodified polymers.
The Putnam, Connecticut, company says high friction and tackiness in unmodified materials cause handling problems because the catheters tend to stick together. In medical use, friction can make such catheters more difficult to maneuver in vascular pathways.
Friction has been reduced by 84 percent for PEBA compounds and 66 percent for the TPU.