| 摘要 |
A hypodermic syringe having a cannula with a point that can be safely destroyed and stored. A portion of the cannula is disposed within a hollow housing that has a reel fitted therein and a portion extends externally therefrom through an aperture in which it is slidably received. A portion of the cannula is disposed in the reel whereby to enable a user to turn the reel, wrap the cannula around the reel to destroy and store it. When the point is fully retracted into the housing, the point can snap against the inside of the housing and provides sensory indications that it is fully withdrawn. The axis of rotation of the reel is at right angles to the cannula.
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