| 摘要 |
The device is built of a housing (1), wherein a push button (3) is positioned, and the puncturing needle (5), wherein the push button (3) has arms (7, 8) to guide the push button (3) inside the housing (1), and a driving spring (11), one end of which is linked to the push button (3), and the other end drives the puncturing needle (5), and the puncturing needle (5) has breakable wings (17, 18), which rest against the breaking edge (19) of the housing (1). The device has moreover two return springs (13, 14), each of which is connected to one of the arms (7, 8) of the push button (3), and two side juts (15, 16), each of which is positioned between one of the return springs (13, 14) and the other end of the driving spring (11). |
