Nasal aspirators; Nasal douches; Nasal and oral inhalers; Medical aspirators; Appliances for washing body cavities; Dental apparatus, electric; Electric massage guns; Apparatus for use in dentistry; Dental cleaning apparatus utilizing sonic vibrations; Dental cleaning apparatus utilizing ultrasonic vibrations; Irrigating apparatus (medical) for use in washing body cavities; Pillows for orthopedic use; Power operated sprayers for medical purposes; Medical apparatus and instruments