Air pillows for medical purposes; Ear plugs for medical purposes; Ear plugs for noise reduction; Ear plugs for soundproofing; Ear plugs for ear protection; Electrotherapy devices for providing transcutaneous electrical nerve stimulation, infrared heat and compression; Exercise machines for therapeutic purposes; Hearing aids; Hearing protectors without the ability to reproduce or transmit sound; Massage apparatus; Radiological apparatus for medical purposes; Soporific pillows for insomnia; Ultrasonic medical diagnostic apparatus