Children's inhalation mask for IN 500 and IN 550 High-quality inhalation mask for children for the IN 500 and IN 550 inhalers from Medisana Suitable for the following Medisana products: IN 500 inhaler With the IN 500 inhaler from Medisana, you can treat specific diseases of the upper and lower respiratory tract such as colds or asthma. Inhalation therapy with aerosols can help to alleviate respiratory problems. IN 550 inhaler The IN 550 inhaler enables targeted treatment of the upper and lower respiratory tract using three different attachments to produce different particle sizes. The integrated accessory compartment allows compact storage of the accessories.