Ampoules are small glass vessels in which liquids for injections are hermetically sealed. A typical pharmaceutical ampoule has a narrow neck between a cylindrical body and a conical tip. They are opened by snapping off the glass top at the neck. The scoring at the neck does not always break where it is intended. This is due to the glass remelding to some degree at the score line. When the cap is snapped off, glass chips can fly off and a jagged or sharp edge can cut the hands of the healthcare[...]