PI Microcatheter for Intra-Arterial Drug Delivery

Polyimide (PI) tubing plays a vital role in Drug Delivery Systems (DDS) due to its outstanding mechanical properties, chemical stability, biocompatibility, and precise dimensional control. Its high precision, corrosion resistance, and customizable characteristics make it a critical component for minimally invasive interventions, targeted drug delivery, and long-term implantable devices.

As a biomedical material, polymers must possess several essential properties, including but not limited to:

Chemical inertness – No reaction with bodily fluids
Biocompatibility – No induction of tissue inflammation or foreign body response
Non-carcinogenicity – No promotion of cancerous growth
Anti-thrombogenicity – Prevention of blood clot formation
Long-term implant stability – No degradation of mechanical strength in vivo
Sterilization resistance – Tolerance to cleaning and disinfection without denaturation
Processability – Ability to be fabricated into complex shapes

Notably, PI not only meets these requirements but also exhibits beneficial bioactive properties.

Mochitek has established a strategic partnership with a globally leading neurointerventional device manufacturer to co-develop an advanced PI (polyimide) microcatheter system specifically designed for complex cerebrovascular interventions. Featuring an innovative distal tip design, it significantly enhances navigability through tortuous internal carotid artery anatomy while ensuring stable and reliable drug delivery via an optimized catheter structure.

PI’s exceptional thermal stability (high/low temperature resistance), chemical/radiation resistance, flexibility, dielectric properties, biocompatibility, long-term stability, and versatile fabrication methods enable diverse medical applications, including: