Medical apparatus and devices; surgical, dental, and veterinary apparatus; Medical instruments; surgical robots; prosthetics and artificial implants; hearing aids; medical electrodes; Electrodes for medical purposes; medical implants; implantable devices for medical use; robotic prosthetics; Robotic exoskeleton suits for medical purposes; Robotic arms for use by mobility-impaired individuals; Wearable walking assistive robots for medical purposes; Prosthetic intraocular implants; Prosthetic sockets used to fasten prosthetic limbs to the body; Prosthetic limbs, namely, arms, feet, legs; Medical hearing instruments; Assistive listening device for the hearing impaired; Brain pacemakers; Brain-computer interface electrodes for medical use; Brain-computer-interface equipment for medical purposes; Brain-computer-interface equipment for medical purposes, namely, hearing, visual, motor, and speaking assistant devices; Brain-computer-interface equipment with embedded software for medical purposes; Brain-computer-interface equipment with embedded software for medical purposes, namely, hearing, visual, motor, and speaking assistant devices