Realistic Medical Device Demo Animation

I need a high-quality, realistic 3D animation that clearly demonstrates how my medical device works. The main goal is product demonstration, so every move, mechanism, and design detail must read instantly to healthcare professionals and potential buyers alike... (Budget: $250 - $750 USD, Jobs: 3D Animation, 3D Design, 3D Graphic Design, 3D Illustration, 3D Modelling, 3D Rendering, 3D Visualization, Animation)