Abstract: The present invention relates to safe medical apparatuses, especially to cannulae that have safety means, and thus help health workers to provide care of patients in a safe manner by protecting such health workers and nurses from infections caused by contaminated blood of a patient. A cannula of the present invention reduces or eliminates the probability of any blood leaks, the probability that a needle body touches the nurse's skin, and the need to use a needle for administering medications. The use of the cannula of the present invention allows for better control over the needle. The cannula of the present invention is characterized by having a trunk with a rubber, a funnel, a valve with a rubber, and two plastic extensions extruded laterally, wherein each of said plastic extensions has a two-face sticker that allows the fixation of the cannula of the present invention on the patient's skin.