Source:http://linkedlifedata.com/resource/umls/id/C0179030
UMD: Manually-operated devices designed to be used to break open the ampule so that the contents of the container can be accessed. Typically, ampules are broken open by snapping the neck/stem of the container, which can produce sharp edges (e.g., due to the fact that ampules are manufactured from glass or plastic). Manual ampule openers are typically designed to provide a method for protecting the user's fingers from the sharp edges, e.g., they guard against cuts to fingers. Some manual ampule openers include a small cutting blade inside the opener that scores the ampule stem to help ensure a clean break.