| 摘要 |
The present invention relates to an injection assistance device (1) for an injection device (3) comprising one body (2) one needle (7) one piston plunger (26), characterized in that it comprises: a hollow sleeve (4) receiving the body (2), coupling means (10) for moving the piston plunger (26) from an end-of-insertion position to an end of injection position said coupling means being maintained in a passive state until said end-of-insertion position, spacer means (8) to maintain the piston plunger (26) and said body (2) in an initial position, disengaging means (22, 14, 15, 16) linked with the spacer means (8), said spacer means (8) and/or disengaging means (22, 14, 15, 16; 25, 31) being arranged in order not to free the distal displacement of said piston plunger (26) before the one of said body (2).
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