The device in order to fill the product (4), the needle (7) with, the plunger head (19) the device in order to protect the fill device which has with the plunger which is connected to the operation rod which is located top it regards (1). 1st retention expedient in order to keep in the 1st position which the device of this invention (1), the support sleeve (2) and the aforementioned needle (7) the protective sleeve in order to protect has (6), and, the aforementioned protective sleeve (6), in that waiting form (8, 10, 12 and 13) with, the aforementioned protective sleeve (6), 2nd retention expedient in order to keep in the 2nd position in that waiting form (8, 14 - 17) with, the aforementioned fill device (4) the aforementioned head of the aforementioned plunger (19) with the expedient which cooperates (20)The intermediate stiffening ring which it possesses (18) with, and, the description above 1st and 2nd retention expedient (8, 10, 12 - 17) be able to characterize the invalid expedient which does not work (23 - 25) with by possessing, aforementioned 2nd retention expedient (8, 14 - 17), it to be possible to try not to work the aforementioned intermediate stiffening ring (18) the aforementioned cooperation expedient (20) the aforementioned plunger head which works (19) by releasing pressure, the aforementioned intermediate stiffening ring (18) the aforementioned invalid expedient (20) with the aforementioned protective sleeve in (6)Pushing pressure expedient (26) the origin of operation it makes that it comes out possible.