| 摘要 |
The injection device (1) comprises: an inlet (2), an outlet (4) and a chamber (6) extending between the inlet (2) and the outlet (4), a piston (12) dividing said chamber (6) in an upper chamber (16) and a lower chamber (18), said piston (12) being movable in said chamber (6) and comprising a body (14). The piston (12) comprises a shutter (30) movable with respect to the body (14) between a closed position, wherein the body (14) and the shutter (30) isolate the upper chamber (16) from the lower chamber (18) when the piston (12) is moved in an injecting direction, and an open position, wherein the body (14) and the shutter (30) place the upper chamber (16) in fluidic communication with the lower chamber (18) when the piston (12) is moved in a filling direction. |
