Professor Fischer develops surgical robotics, including MRI-compatible robotic devices for enhancing cancer diagnosis, add intelligent automation to telesurgery, and develop assistive robotics, including socially assistive robots and wearable physically assistive robot exoskeletons. Examples of his work include enhancing the diagnosis of prostate cancer and neurosurgery robots for treating brain cancer; adding intelligent automation telesurgery; assistive robotics including socially assistive robots, soft wearable upper limb orthoses, and lower limb exoskeletons. He is spearheading an effort to develop and share designs for creating low-cost ventilators for those with COVID-19.