| 摘要 |
The invention concerns a hypodermic needle safety apparatus ( 10 ) which is either manufactured as a separate unit for retrofitting to an existing hypodermic needle ( 28 ), for example the hypodermic needle of a syringe, or which is connected integrally to the needle. The safety apparatus has an end cap ( 16 ) which locates over the tip of the needle when the apparatus is in a safe condition and which can be retracted along the needle during use. A flexible, resilient support structure ( 20 ) extends alongside the needle and supports the end cap. In a relaxed state the support structure has an inwardly bowed shape that prevents retraction of the end cap. A deflecting arrangement ( 22 ) is provided which can operate to deflect the support structure from the inwardly bowed shape to a shape that allows retraction of the end cap along the needle.
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