| 摘要 |
The present invention provides a syringe for use with a unit dose cartridge, which syringe comprises: a) an axially extending body member having an axially extending bore therein adapted to receive a unit dose cartridge therein; b) a mounting at the distal end of the body carrying or adapted to carry a hollow needle member through which fluid can flow from said unit dose cartridge; c) a plunger member carrying or adapted to engage the proximal face of a piston member journalled for axial movement within the bore of a unit dose cartridge when mounted in the body member of the device, characterised in that: d) the plunger is secured to the proximal end of the syringe body by a pivotal connection whereby the plunger can be pivoted from a first position at which it lies outside the syringe body but generally parallel to the longitudinal axis of the syringe body to a second position at which the longitudinal axis of the plunger is substantially co-incident with that of the bore within the syringe body whereby the plunger can be moved axially into and within the bore of the syringe body, the pivotal connection allowing relative axial movement between the plunger and the syringe body; and e) the plunger member is provided with a groove or recess therein into which the needle of the syringe is adapted to locate so as to provide a sheath for the needle when the plunger is in its said first position; and f) a locking mechanism is provided for securing the plunger member in its said first position. |
