The microcatheter is crafted from high-quality polyimide, a material celebrated for its exceptional durability and chemical resistance, making it suitable for diverse and challenging applications. Its design incorporates a dramatically reduced inner volume, significantly minimizing fluid waste and optimizing the precision of fluid delivery—essential for procedures that require precise fluid dosages. Additionally, the integration of a 4-way stopcock not only ensures seamless use with industrial-standard syringes but also introduces superior control over fluid direction, eliminating the need for additional adapters and streamlining the setup process, thus enhancing procedural efficiency.