Medical Microinstruments (MMI) raised $125 million in Series D financing to expand the reach of its Symani Surgical System and pursue new microsurgery applications. The company also disclosed an experimental research track to explore microsurgical approaches relevant to Alzheimer’s disease, expanding the platform’s potential beyond surgical tooling into translational clinical programs. The round supports scaling of an installed base strategy while funding early translational studies—an increasingly common pattern for medtech-adjacent biotech investments.