FATIn (Femoral Access Training Intervention) is a portable, anatomically accurate femoral access simulator designed for ultrasound-guided training in vascular access procedures. Its non-complicated design features a replaceable puncture site, enabling repeated practice while maintaining cost-efficiency. The model includes realistic femoral anatomical structures, such as the femoral bone, femoral artery, and femoral vein, ensuring lifelike tactile feedback and visual accuracy during procedures. The simulator supports ultrasound-guided femoral access management, offering a mobile femoral casing for use in various training environments, including classrooms, clinical workshops, and field simulations. Its real-time ultrasound compatibility enables trainees to practice locating and accessing vascular structures, performing needle insertion, and advancing catheters under ultrasound guidance. Replaceable Puncture Sites allow for repetitive use while ensuring hygienic and effective training. This feature minimizes downtime and maintenance costs, making FATIN ideal for high-volume training programs. Its compact, mobile design eliminates the need for extensive setup, allowing on-the-go training sessions and easy transport. FATIN addresses critical challenges in clinical training, including skill development gaps in vascular access procedures, limited access to advanced simulators, and the need for portable, cost-effective solutions. It enhances procedural confidence while reducing learning curves, enabling trainees to gain essential skills in a realistic, risk-free environment. In summary, FATIn is a highly portable, ultrasound-compatible femoral access training solution, offering anatomical accuracy, realistic tactile feedback, and cost-effective replaceable components. It empowers clinicians to build procedural expertise, ensuring safe and accurate femoral access management.