Constructed from superior polyimide material, our microcatheter excels in durability and chemical resistance, meeting the stringent requirements of laboratory environments. Its significantly reduced inner volume is pivotal in minimizing fluid waste and enhancing delivery precision, essential for experiments requiring exact fluid dosages. The integration of a 4-way stopcock not only facilitates direct compatibility with industrial-standard syringes but also offers unparalleled procedural flexibility by eliminating the need for additional adapters, thus streamlining the setup process and boosting efficiency.