Abstract: A safety hood for hypodermic needles has an elongated body having a U-shaped cross-section and two ends spaced from one another in a direction of elongation with one of the ends being closed, elements for preventing undesired withdrawal of a needle from the hood provided in the body, and a pivot member provided on another of the ends and formed so that the body can be turned in a direction transverse to its direction of elongation between a first position in which the body surrounds and closes the needle and a second position in which the body is turned away from the needle and exposes the needle.