| 摘要 |
The apparatus, which is used for administering vaccines such as BCG, is provided with a head unit comprising an outer housing 10 having apertures 12 through its end face 24 which is placed against a patient's skin for administration of the vaccine. Needles 16 mounted on a needle block 14 are disposed within the housing and, on actuation by an actuating body 30, 32, the needles are projected through the apertures and into the patient's skin. The actuating body is attached to the head unit and is guided during attachment by an end portion 29 of the outer housing of increased diameter. Once the vaccine has been administered the needle block remains in its extended position. The head unit is removed to be replaced by a sterile head unit and the used head unit is discarded. <IMAGE> |
