Air mattresses for medical purposes; Dental burrs; Medical apparatus and instruments for monitoring blood oxygen saturation, blood gas concentrations, vital signs and respiratory events; Menstrual cups; Milling apparatus for dental purposes; Mirrors for dentists; Orthodontic machines and instruments; Orthodontic rubber bands; Orthopedic braces; Posture correction device, namely, an adjustable harness to correct one's posture for medical purposes