According to Siegle, the inventor of the pneumatic otoscope, initially there should be induced rarification (application of negative pressure) in the ear canal. When the tympanic membrane is ...

They’ll carefully rotate the otoscope in different directions to see the inside of your ear and your eardrum. Your doctor may use a pneumatic otoscope, which has a plastic bulb on the end ...

An assistant must also hold the child's hands. The pneumatic otoscope should have a light source of sufficient brightness and an airtight system that permits application of positive and negative ...