Size: 1 kit Otovent Ear Treatment. Otovent is a device designed to alleviate the unpleasant symptoms of blocked Eustachian tubes by the use of gentle reverse air pressure. The Otovent kit consists of a special balloon and nosepiece which is inflated by blowing through the nose. Otovent may provide the only treatment your child will need to alleviate the symptoms of Glue Ear. Warnings: If in doubt please consult your doctor or your pharmacist. Always read the instruction leaflet. Otovent should not be using during a cold, ear or throat infection.