Source:http://linkedlifedata.com/resource/umls/id/C1458090
UMD: Devices designed for manual percussion of the chest wall to aid in the airway clearance from secretions (i.e., mucus). These devices are typically made of plastics (e.g., vinyl) with a shape that resembles a cup; they are available in several sizes appropriate for adults, children, or babies. Manual percussors permit a uniform percussion of the chest both for healthcare providers and at home in patients suffering from diseases such as cystic fibrosis, muscular dystrophy, chronic bronchitis, and other respiratory deficiencies.