Designed to expand when heat is applied, XpanCore™ mandrels are advanced processing aids that help simplify the construction of hypotube assemblies by alleviating issues with liner sizing, placement, and adhesion.
XpanCore™ Mandrels
Designed to expand when heat is applied, XpanCore™ mandrels are advanced processing aids that help simplify the construction of hypotube assemblies by alleviating issues with liner sizing, placement, and adhesion.
Laser-cut hypotubes (LCHTs) are increasingly used in catheter design due to the added strength, flexibility, and kink resistance they provide compared to traditional braided or coiled shaft constructions. However, manufacturing LCHT assemblies can introduce additional time and process complexity, particularly when integrating liners within the inner diameter (ID) of the hypotube.
Traditional manufacturing processes rely on ultra-tight dimensional control between the outer diameter (OD) of the liner and the inner diameter (ID) of the hypotube, as well as the use of pressurized systems or other complex techniques to secure the liner within the assembly. These approaches can increase manufacturing complexity and lead to poor yields as a result of liner damage or incomplete bonding.
XpanCore™ mandrels were engineered specifically to address these challenges. Inserted into the ID of the liner, XpanCore™ mandrels expand outward when heat is applied, helping secure the liner against the inner walls of the hypotube during processing. This helps simplify liner integration while supporting more efficient and repeatable assembly processes.
XpanCore™ mandrels are available as solid monofilaments or thick-walled tubes, depending on the desired diameter of the mandrel. XpanCore™ mandrels are available in FEP or PFA and can be supplied in cut lengths up to 120″ (3048 mm).
