| 摘要 |
A dispenser ( 1 ) has a source ( 2 ) of medicament with a transparent reservoir ( 3 ) of glass sheathed in a transparent plastics material shrink wrapping ( 4 ), which provides an enclosure against explosion of the glass in the event of accidental breakage of the glass. The reservoir contains not only a liquid medicament ( 5 ), but also a gaseous propellant liable to cause the glass to explode if broken. A valve ( 6 ) of the source is within a body ( 7 ) of the dispenser. The valve is attached to the reservoir by a crimped on aluminum sleeve ( 8 ). With the dispenser inverted the level ( 14 ) of the medicament ( 5 ) is within the tapered tip when the medicament is close to being used up. As use of the dispenser continues, the level falls progressively faster, giving the user an indication that a fresh dispenser will soon be required.
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